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#1033971 - 01/05/16 03:17 AM Customized ZZ4 EPROMs for sale  
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Bitflipper Offline
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I have a number of customized ZZ4 EPROMs for sale. These EPROMs can only be used in ECM model number 1228079 - if you have an '87 or '88 Monte Carlo SS with the stock computer then this is the ECM that you have. Earlier model years require you to swap out your ECM for a 1228079. I am NOT selling any ECMs as they are readily available on ebay and from other members.

Note that the EPROMs I am selling are modified from the stock ZZ4 parameters in the following ways:

- The spark advance that is added when an ALDL diagnostic cable/scanner is plugged in is deleted in these EPROMs. That means your car will behave the same way regardless of whether or not you have a scanner plugged in.

- The Air Diverter is programmed to use RPM in the stock ZZ4 parameters whereas the L69 chip uses the VSS. I put the Air Diverter control back to using VSS in these EPROMs as I find that the car drives better this way when coasting downhill in low gear. This change makes no difference if the Air Diverter is deleted as there is no feedback from or trouble code related to the Air Diverter.

- The ZZ4 parameters delete the Baro sensor. Since the Monte Carlo SS has a Baro sensor, I re-enabled it for what it's worth.

- The stock ZZ4 deletes the EGR functionality entirely. I re-enabled the EGR functionality in these EPROMs. This means that you can still run your EGR if you so choose, but if it is deleted, the vacuum line for the EGR MUST be blocked off or a nasty vacuum leak will ensue. Note that the EGR trouble code 53 remains DELETED in these EPROMs, only the potential functionality of the EGR is re-enabled. Said a different way, regardless of the state of the EGR, the SES light will never come up with code 53, not after 20 minutes of highway driving, not ever.

Please note - any mention of deleted emissions equipment above is not a recommendation. In fact, it may be illegal to delete these parts in your state/province.

Price for one EPROM is $65 USD shipped in the US ($70 to Canada). If you want an EPROM with one or more of the customizations listed above changed back to the ZZ4 defaults then the price for one personalized EPROM is $85 shipped in the US ($90 to Canada). If you want anything else personalized (eg. other trouble codes deleted) then you can write me to inquire as to whether it can be done and at what price.

I do not know how long I will be able to offer these EPROMs for sale as there are only a limited number of EPROMs of this vintage readily available, and demands on my time may change. For the time being, if you want one of these EPROMs, PM me and I will send you my PayPal address.


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#1033993 - 01/06/16 01:35 AM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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I'm interested in the modified eprom as described and discussed in the forum post. Sending a pm to request payment info.


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1987 Monte Carlo SS Aerocoupe
Objects in mirror are losing
https://www.flickr.com/gp/34317731@N08/3xk4xk
#1034807 - 02/02/16 04:37 AM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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I will be testing this in my 83 using an 86/87 ECM and custom chip.

I have 2 ECM's, 1 from an SS and the other is none SS but the correct part #.

Last edited by oemtech; 02/02/16 04:40 AM.

Dale (AKA - Oemtech - Oemy)
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83 Monte Carlo SS
My Monte Carlo SS Web Site
#1034863 - 02/04/16 02:03 PM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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I received mine. Its working good
Thanks

#1035893 - 03/04/16 08:34 PM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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Installed the 87/88 ECM with the custom chip in my 83 and starts, runs and no codes. Will do more testing in the next week or so. IE - remove EGR.

Last edited by oemtech; 03/05/16 12:50 AM.

Dale (AKA - Oemtech - Oemy)
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83 Monte Carlo SS
My Monte Carlo SS Web Site
#1035894 - 03/04/16 09:35 PM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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That rocks, thanks for the update Dale. That's an 87/88 ECM, you're using there, '86 was different.

Anyone with an early model year SS that does not have a knock sensor (no-ESC, no Electronic Spark Control, however you want to say it) can now buy a custom ZZ4 EPROM from me if you like. Just make sure I know it's the no-ESC one that you need.


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#1035902 - 03/05/16 12:59 AM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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OBTW - I have a 2nd 87/88 ECM and a spare ZZ4 chip.


Dale (AKA - Oemtech - Oemy)
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83 Monte Carlo SS
My Monte Carlo SS Web Site
#1036706 - 03/23/16 05:20 AM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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For any early model year forth gen Monte Carlo SS members who might have been concerned about whether or not they have an ESC and if they can use the 1228079 ECM with a ZZ4 chip - today it was proven that ALL forth gen Monte Carlo SS's were installed with a knock sensor and ESC. More info here:

ZZ4 Prom Chip?

All Monte Carlo SS model years 1983-1988 can use the customized ZZ4 chip I have created (or stock chip, or stock ZZ4 chip). 1983-1986 need to acquire a 1228079 ECM to put the chip in and swap the ECM.

Thanks to member oemtech for helping me prove this out for certain.


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#1038154 - 04/21/16 11:38 PM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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I installed the updated ZZ4 chip with ESC and it runs great.

I have a 2nd 87/88 ECM & bitflipper sent 2nd ZZ4 chip. Went to install the chip & the orientation was 180 degrees out from the one I have in my 83. When I have some time I will swap ECM's to test.


Dale (AKA - Oemtech - Oemy)
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83 Monte Carlo SS
My Monte Carlo SS Web Site
#1038755 - 05/06/16 11:26 AM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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It looks like it has been a few months since this was posted, but I am curious if you still have any of these EPROMs for sale.

#1038768 - 05/06/16 03:11 PM Re: Customized ZZ4 EPROMs for sale [Re: ProjectMonte]  
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I have a few burned and ready to go. I'll send you a PM.


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#1044309 - 10/12/16 04:50 AM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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This may not be the best timing for this because many of you guys are probably preparing to winterize your car but it's out of my hands:

I will soon be relocating to once again take up full time work in an intense info tech position. There is a good chance I will have to cease offering these ZZ4/L69 hybrid EPROMs for sale.

Today I bought out the last of the TMS2532JL EPROMs here in the SF Bay Area where I imagine some long gone silicon valley technology company liquidated them to the surplus store in San Jose, CA. So regardless of demands of my new position, once those are gone, I'm likely completely shutting down production of these EPROMs because they are simply too difficult to find at a reasonable price.

If you are interested in one of these EPROMs I would suggest you contact me soon as I may disappear indefinitely before too long.

In any case, please read the first post in this thread and understand what it is that I am offering for sale and what the minimum ECM requirements are to use the ZZ4/L69 hybrid EPROM.


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#1053241 - 09/06/17 03:49 PM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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Hi Bitflipper Can you modified Hypertech Chip Stage2 chip! Let me know thanks?

#1053245 - 09/06/17 11:15 PM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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Only if the chip is meant for the 1987/1988 Monte Carlo SS ECM - model # 1228079. I don't have the source code (nor does anyone AFAIK) for any of the other ECM model years so it's impossible to know what the chip parameters are for anything other than 1228079.

What do you want done to it?


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#1053591 - 09/25/17 05:52 PM Re: Customized ZZ4 EPROMs for sale [Re: tomh115]  
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Can you burn Hypertech stage 2 chip and delete EGR code 53!

#1053599 - 09/25/17 08:14 PM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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Again, I have to ask you what ECM you have that Hypertech Stage 2 chip in. You need to pull your ECM out of the harness and tell me the numbers on the white sticker that is on the ECM housing. If it matches the 1987/1988 Monte Carlo SS ECM then yes, I would be able to do it. Otherwise no. If it's a match then you would need to send me the chip for about a week so I have time to read/modify/burn to a new EPROM.


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#1054442 - 11/16/17 03:13 AM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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How can I trust you that will ship it back to me and I am originally owner of 87 SS and right now original ecm chip in it and can you ship one and I will ship you and when I receive it

#1054443 - 11/16/17 03:35 AM Re: Customized ZZ4 EPROMs for sale [Re: Marino]  
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Originally Posted by Marino
How can I trust you that will ship it back to me and I am originally owner of 87 SS and right now original ecm chip in it and can you ship one and I will ship you and when I receive it


Do what I did get a 2nd ECM.. I may even have one at the shop. I will check and get back to you.


Dale (AKA - Oemtech - Oemy)
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83 Monte Carlo SS
My Monte Carlo SS Web Site
#1054444 - 11/16/17 03:49 AM Re: Customized ZZ4 EPROMs for sale [Re: Marino]  
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He is very trustworthy. He did a lot of a favor with these custom EPROM chips and I'll vouch for him. Top notch guy (I'm sure other members would do the same). Chip works great.


[Linked Image]
1987 Monte Carlo SS Aerocoupe
Objects in mirror are losing
https://www.flickr.com/gp/34317731@N08/3xk4xk
#1054448 - 11/16/17 03:18 PM Re: Customized ZZ4 EPROMs for sale [Re: tomh115]  
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If I ship out mine and how much do you charge. I live in Ontario, Canada! It shouldn't be a problem! Do you need to remove EGR or block plate it!

#1054449 - 11/16/17 04:00 PM Re: Customized ZZ4 EPROMs for sale [Re: Marino]  
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Originally Posted by Marino
If I ship out mine and how much do you charge. I live in Ontario, Canada! It shouldn't be a problem! Do you need to remove EGR or block plate it!


You don't need to ship anything... You just need a compatible ecm and a new chip.


Dale (AKA - Oemtech - Oemy)
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83 Monte Carlo SS
My Monte Carlo SS Web Site
#1054450 - 11/16/17 05:11 PM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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Marino is kind of all over the map. He originally asked if I could delete the EGR code from a "Hypertech Chip Stage2" but I never heard of such an animal for the 1228079 ECM. Now he says he's using the original L69 chip. He's asking questions as to whether or not he can trust me. For the very marginal amount of money I get out of working with these chips, I don't trust him not to smear my name because he doesn't understand what he's working with. Were it in fact a unique chip intended for the 1228079 ECM, I would have done it just for the curiosity factor of seeing how it differs from L69 or ZZ4. Doesn't seem worth it now.


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#1054455 - 11/16/17 09:53 PM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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Just got back from the shop.....

1 have 1 ECM 1228079 ECM with a Bittflipper ZZ4 mod chip sitting on my desk.
$175 shipped to Canada or $150 shipped lower 48.

Bittflipper - I have a eprom you might be able to use
front - 2532JL-45 MEP8319 Back - M2532/02866
Yours free if you want it.

Last edited by oemtech; 11/17/17 01:35 AM.

Dale (AKA - Oemtech - Oemy)
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83 Monte Carlo SS
My Monte Carlo SS Web Site
#1054462 - 11/17/17 01:12 PM Re: Customized ZZ4 EPROMs for sale [Re: oemtech]  
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Hi' Sorry for all confusion, i do have the original ECM chip that is in and functional, i also purchased 20yrs go Hypertech stage2 chip and which i remove and i didn't notice any difference, and i was asking if Hypertech can be modified! i know original can be burn! What can you do for me

#1054465 - 11/17/17 02:29 PM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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Considering that you said there was no difference in stock and the Hypertech chip I wouldn't even mess with modding the Hypertech chip. The gains wouldn't be worth the effort. The modified ZZ4 chip worked as designed for what I wanted. My goal was to swap out the stock GM manafold, install an Edlebrock 3701 manifold and block off the EGR port. But, this allowed me to put the stock chip back in and reinstall the EGR if I sold the car. With the ZZ4 chip mod I could leave the stock manifold on and remove the the EGR. IE - best of both.

Just what are looking for from a chip change?


Dale (AKA - Oemtech - Oemy)
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83 Monte Carlo SS
My Monte Carlo SS Web Site
#1054467 - 11/17/17 05:03 PM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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As I said - if that Hypertech chip was in a 1987/88 ECM (part number 1228079) then it can be modified to delete the EGR trouble code, and in fact, all the other changes I made could in theory be incorporated. I would need the chip to read it, change the trouble code table, and burn a new EPROM. Included in the price (I'd do it for $85 for the curiosity factor) would be a comparison of the Hypertech chip to the original L69 or ZZ4 chip (which I would make public) so that the mystery behind the Hypertech chip would be understood.

As oemtech said though, other than the sheer curiosity of demystifying the Hypertech chip, you'd actually probably be better of with the ZZ4/L69 hybrid that many others are using.

oemtech - that is the EPROM that I use to make the hybrid ZZ4/L69 chip. It's a crap shoot as to whether or not it can be erased and re-burned - many of these EPROMs are suffering from age. Eg. the code stamped on the front of your spare chip suggests that it was made in 1983 (most of them were early 80's as the 2532JL was quickly superseded by the more popular 2732). Anyway, I'll PM you my (new) address - you can send it at your convenience.

Dylan.


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#1054469 - 11/17/17 07:02 PM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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I'm hoping you do get your hands on a Hypertech chip to read it and compare to the L69/ZZ4, I'm sure others are curious too.

I do have a Hypertech chip that is for the 86' and older ECM, if that would be of any help in this. Would double check the number but when I got it (was in a parts car) the number when searching came back as for the older ECM.

Last edited by PB86SS/87LS; 11/17/17 07:03 PM.

-86'SS 383 CCC QJet- BRF 2004r-8.5" 3.42
-87'LS 350 MAF/SD TPI- CRF 2004r-7.5" 3.42
-81'Grand LeMans Safari Wagon 350 CCC Q-Jet/CZF 2004-r/8.5" 3.73
-07'TBSS Stockish daily driver
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#1054471 - 11/17/17 07:45 PM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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Heh, my 88 came with a Jet or Hypertech chip intended for an 86, causing a 'no PROM' error to flash. I'll happily mail it to bitflipper if desired.

#1054474 - 11/17/17 08:31 PM Re: Customized ZZ4 EPROMs for sale [Re: ratbuddy]  
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Originally Posted by ratbuddy
Heh, my 88 came with a Jet or Hypertech chip intended for an 86, causing a 'no PROM' error to flash. I'll happily mail it to bitflipper if desired.


The one I have was the same way, IIRC, came in a parts car that didn't run (for some time) with the older chip in a 87/88 ECM. Found that interesting.


-86'SS 383 CCC QJet- BRF 2004r-8.5" 3.42
-87'LS 350 MAF/SD TPI- CRF 2004r-7.5" 3.42
-81'Grand LeMans Safari Wagon 350 CCC Q-Jet/CZF 2004-r/8.5" 3.73
-07'TBSS Stockish daily driver
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#1054480 - 11/18/17 03:36 AM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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I don't have the source code for any ECM other than the 1987/88 ECM, so chips for '86 and older would be undecipherable. Given that there is no sign of anyone having access to the '86 and earlier source code, I'm really skeptical that Hypertech did anything material to their "Performance chip" beyond copying the stock chip and aiming for the placebo effect. I've never heard of a Hypertech chip for the 1987 ECM but if someone has one I'd be happy to read it for comparison and transparency.


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#1054486 - 11/18/17 07:04 PM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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Hi Yes just delete EGR valve exactly like what you did, here is SN 13 1961 Hypertech chip!

#1054808 - 12/13/17 05:57 PM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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Just out of curiosity what all do you gain from swapping to a ZZ4 prom?


84 Monte Carlo SC 406 SBC
78 Monte Carlo 305 sbc SOLD
78 Monte Carlo Landua 350 sbc SOLD
81 Malibu Classic 350 sbc SOLD
84 Monte Carlo LS 350 sbc SOLD
84 Buick Regal 229 v6 SOLD

#1054809 - 12/13/17 06:46 PM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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Not a lot gained by switching to EGR delete PROM. For most who have changed intakes to a non EGR intake and have kept the CCC system it will turn off the CE light. The ECM throws a code for EGR and turns on the light, a nuisance. The 87-88 ECM (079) is said to be a little better, faster, than the earlier ECMs and is the choice for the CCC system, and the only ECM that is used with the delete PROM. ECMs for each year are different, PROMS can't be switched between years. The 87-88 ECM has become the standard for anyone looking to stay with the CCC. The 079 ECM was used in most all the 87-88 CCC engines, whether SS, Camaro or Caprice.
Performance wise the 079 and related PROMs may be a tad more aggressive with ignition timing, and still maintains the knock sensor. Early (pre 84) ECM didn't have knock retard, a good feature on the L69 especially due to it's higher compression and poor chamber design.

Eric, you're not going back to CCC?
Bob

#1054821 - 12/14/17 05:10 PM Re: Customized ZZ4 EPROMs for sale [Re: mmc427ss]  
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Bob, thanks for the information. No, I am not going back to it. One of the guys on here that I work on his car was curious and asked me. I was like you know I don't know let me ask. My next motor is LS all the way with a turbo more than likely a 5.3 on day anyway.

Sorry didn't mean to hijack this for sale thread.


84 Monte Carlo SC 406 SBC
78 Monte Carlo 305 sbc SOLD
78 Monte Carlo Landua 350 sbc SOLD
81 Malibu Classic 350 sbc SOLD
84 Monte Carlo LS 350 sbc SOLD
84 Buick Regal 229 v6 SOLD

#1054822 - 12/14/17 05:46 PM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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The statement that "Early (pre 84) ECM didn't have knock retard" may not be correct. Member "oemtech" here has an 83 SS and asked me about my custom chip. I went to the trouble of deleting the ESC for him. But after doing that, I asked him to look under his hood, and sure enough, there's an ESC under there. I did not ask him to crawl under his car and look for a knock sensor, but I'd be betting it's there if GM bothered to put the ESC under the hood. I sent him the same ESC-enabled chip I send everyone else and it worked fine, no ESC trouble codes.


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#1054824 - 12/14/17 06:50 PM Re: Customized ZZ4 EPROMs for sale [Re: 406monte]  
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Originally Posted by 406monte
Just out of curiosity what all do you gain from swapping to a ZZ4 prom?


Not just deleting the EGR, I had to search a bit for more info, I bought a ZZ4 PROM back when it was still available for my 383 swap. Nice that Bitflipper still offers this or was as tuning for our ECM's has pretty much always been non existent, even when Hypertech was (likely) not doing anything or much to the chips they sold.

From what I can find, the ZZ4 prom also changes some settings for when the convertor locks up (higher speed), spark curve and carb duty cyle (not sure what that means), probably some more, maybe Bitflipper can get into detail on the changes.


-86'SS 383 CCC QJet- BRF 2004r-8.5" 3.42
-87'LS 350 MAF/SD TPI- CRF 2004r-7.5" 3.42
-81'Grand LeMans Safari Wagon 350 CCC Q-Jet/CZF 2004-r/8.5" 3.73
-07'TBSS Stockish daily driver
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#1054826 - 12/14/17 07:53 PM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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mmc427ss Offline
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It could be all SS L69 got the ESC. I was dealing with a guy that had an early 80s CCC El Camino, no ESC on it.

The 079 that is still inside the kick panel on my car, not used anymore, has the ZZ4 EGR delete PROM in it. Part #24502456 was the original number for the ZZ4 PROM.
I always ran premium in the old 305 because it was ping prone. It actually was better after the ZZ4 PROM and 079 ECM was swapped in.
Bob

#1054830 - 12/14/17 09:19 PM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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Bitflipper Offline
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I detailed what I could about the differences between the L69 and ZZ4 proms here:

ZZ4 Prom Chip?

Specifically with respect to the lock-up speed:

000001DC: 7A 70 - 31DC: 70 FCB $70 ; MIN SPEED FOR TPS LOCK
000001F9: FF 80 - 31F9: 80 FCB $80 ; MIN SPEED TO LOCK 3RD
000001FA: FF 70 - 31FA: 70 FCB $70 ; MIN SPEED STAY LOCKED 3RD
00000209: 7A 80 - 3209: 80 FCB $80 ; MIN SPEED TO LOCK 4TH
*************** - 320A: 70 FCB $70 ; MIN SPEED STAY LOCKED 4TH

Minimum speed for L69 to lock is 38.125 MPH. Minimum speed for ZZ4 to lock is 35 MPH. But that's not the end of the story.

Minimum speed for L69 to lock in 3rd is not defined. Minimum speed for ZZ4 to lock in 3rd is 35 MPH. The code is really difficult to untangle, but if I understand it correctly, this won't be used in either L69 or ZZ4 because they are defined as having overdrive transmission.

Minimum speed for L69 to lock in 4th is not defined. Minimum speed for ZZ4 to lock in 4th is 40 MPH.

So yes, minor differences in when the lock-up happens between the two chips.


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#1054832 - 12/15/17 01:28 AM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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mmc427ss Offline
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Can't help with details about lockup and the PROM, the 305 had 6 gears and a clutch when I did the ZZ4 PROM change. I can say the L69 went 14.9 @93.5 with a set of TES and a little tweaking on the carb.
Bob

#1055423 - 01/19/18 12:56 AM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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Buick Runner Offline
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Dharma station 1 the Hydra
I havr a quick question with using a ZZ4 prom. Should the base timing be set to stock at 6 degrees BTDC or is it ok to have base timing set at 10 degrees BTDC with running this prom?

Last edited by Buick Runner; 01/19/18 01:01 AM.

SBC powered 1987 Regal with TES headers, ZZ4 intake, ZZ4 PROM chip, mini starter, THM2004R, 2500 stall converter, 2040 cam, CCC system, and 3.73 posi rear.

2008 ex NPS P71 Crown Victoria, cop motor, cop shocks, cop brakes, and Jmod.

Never argue with an idiot.
They will just drag you down to their level and beat you with experience.
#1055439 - 01/19/18 04:40 PM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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Bitflipper Offline
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Here is what I say in my installation tips/notes that some members opt to receive from me:

"You may want to think about getting an old OBD-1 scanner or USB-Serial cable and build an ALDL adapter with a Jones connector (I wrote an article on the forum about this), that is if you don't have one. My custom ZZ4 chip deletes the Spark Advance that gets added when you plug in a scanner so you can actually drive the car with the scanner connected and it will behave the same as if it was not. Amongst many other things, this is good for tuning your timing and confirming you aren't going too far to the point where your engine is constantly knocking. Set your initial timing somewhere between 8 and 12 degrees BTDC and you should feel a little more pull while driving."

Some people have an ear for the "Ping" of the knock, I personally have trouble distinguishing that from any other engine noise. If you can do it by ear, great. Most scientific way is monitoring with a scanner.


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#1055444 - 01/20/18 02:13 PM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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oemtech Offline
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You mean something like this...

[Linked Image]


Dale (AKA - Oemtech - Oemy)
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83 Monte Carlo SS
My Monte Carlo SS Web Site
#1055448 - 01/21/18 12:14 AM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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Bitflipper Offline
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Yes, except that the cable I bought cannot handle the 12 volt signal that comes out of the 1228079 ECM ALDL line. Be aware that you may need to craft a voltage divider. I did a write up a while back on it. Anyone with a soldering iron can build one - it doesn't have to be pretty, just solid.

http://www.montecarloss.com/community/ubbthreads.php?ubb=showflat&Number=998840

Let me guess - Someone is going to ask me to build one for them anyway just like you guys talked me into selling the EPROMs. :-O


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#1061174 - 03/15/19 06:02 PM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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88montessnut Offline
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Puyallup wa.
Sent you a pm for a chip bitflipper.

#1061281 - 03/25/19 10:20 AM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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737Mech Offline
My First Post!
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Hi Bitflipper,

I am am interested in your ZZ4 chip. Tried sending pm but box is full.

Thanks,

Jim

#1061286 - 03/25/19 06:21 PM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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Bitflipper Offline
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Hi Jim,

Yeah, apologies, 30 threads is all it takes to fill it up. I'll clear out a few and PM you.


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#1066864 - 06/17/20 03:37 AM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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pitotes Offline
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pitotes  Offline
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Hello I sent you a message about zz4 . Please message me when you get a chance

#1067027 - 06/27/20 10:13 PM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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Tw1still Offline
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Do you still have chip available thanks

#1067054 - 06/29/20 04:06 PM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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Bitflipper Offline
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Bitflipper  Offline
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I PMed you on May 31 and you never responded.


Last edited by Bitflipper; 06/29/20 04:09 PM.

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#1067211 - 07/08/20 08:57 PM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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pitotes Offline
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pitotes  Offline
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Can you send me your PayPal address?

#1067253 - 07/12/20 03:37 PM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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Tw1still Offline
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Sorry I had some health issues that had to get taken care of i do apologize

#1067256 - 07/12/20 05:22 PM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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1988SS Offline
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Bitflipper....your inbox is full. I am interested in one of your ZZ4 chips if you still have them available. Thanks, Darron


1988 Monte Carlo SS
#1067281 - 07/13/20 05:44 PM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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Bitflipper Offline
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PM sent.


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#1067282 - 07/13/20 07:03 PM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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AllenMH Offline
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Hi Bitflipper. If you have any more chips left I'd like to get one of them. Thank you, Allen

#1067284 - 07/13/20 10:35 PM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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Bitflipper Offline
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PM sent.


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#1067311 - 07/14/20 11:22 PM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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Bitflipper Offline
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One EPROM remains from the original batch after the most recent purchase by Tw1still. Price goes up after that, and processing times will increase.


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#1067431 - 07/27/20 10:55 PM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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Bitflipper Offline
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Last ZZ4/L69 hybrid EPROM from the original batch has been sold. Unfortunately due to the increasing cost of both blank/salvage EPROMs of the required vintage and model as well as the ever increasing price of Priority Mail, the price has to go up, and lead times may vary.

6 available @ $75 shipped in the US. Price may adjust again after those are gone.


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#1067590 - 08/10/20 03:50 PM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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SSinSA Offline
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Will this eprom work on a 100% stock 1988 Monte Carlo SS L69?

#1067594 - 08/10/20 10:14 PM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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Bitflipper Offline
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Yes it will but don't expect the difference to be mind-blowing. If you bump your timing a little from stock it should give you a little more pull. And of course you'll do away with the EGR trouble code.


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#1068201 - 10/05/20 05:15 PM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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Originally Posted by Bitflipper
Last ZZ4/L69 hybrid EPROM from the original batch has been sold. Unfortunately due to the increasing cost of both blank/salvage EPROMs of the required vintage and model as well as the ever increasing price of Priority Mail, the price has to go up, and lead times may vary.

6 available @ $75 shipped in the US. Price may adjust again after those are gone.



Hi Bitflipper,

It appears your pm inbox is full.

I'd like to purchase one of your zz4 chips if they are still available.

Regards,

Last edited by BlackBerlinetta; 10/05/20 06:34 PM.
#1068257 - 10/12/20 08:43 PM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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Bitflipper Offline
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Bitflipper  Offline
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Sorry for the delay BlackBerlinetta - crap hit the fan at work and they've been working us to the bone to get things right again. Gotta love Information Technology...

There are a few chips ready to go, and I cleared out a few PM's so you should be able to hit me up now. I'll try to pay a little more attention here as time permits.


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#1068259 - 10/13/20 01:41 PM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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BlackBerlinetta Offline
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BlackBerlinetta  Offline
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Originally Posted by Bitflipper
Sorry for the delay BlackBerlinetta - crap hit the fan at work and they've been working us to the bone to get things right again. Gotta love Information Technology...

There are a few chips ready to go, and I cleared out a few PM's so you should be able to hit me up now. I'll try to pay a little more attention here as time permits.


No worries - just messaged!

#1068874 - 12/08/20 04:50 PM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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PB86SS/87LS Offline
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New Berlin, WI
PM sent Bitflipper


-86'SS 383 CCC QJet- BRF 2004r-8.5" 3.42
-87'LS 350 MAF/SD TPI- CRF 2004r-7.5" 3.42
-81'Grand LeMans Safari Wagon 350 CCC Q-Jet/CZF 2004-r/8.5" 3.73
-07'TBSS Stockish daily driver
[Linked Image]
#1071032 - 06/11/21 11:04 AM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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PB86SS/87LS Offline
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Bitflipper, still have these available?


-86'SS 383 CCC QJet- BRF 2004r-8.5" 3.42
-87'LS 350 MAF/SD TPI- CRF 2004r-7.5" 3.42
-81'Grand LeMans Safari Wagon 350 CCC Q-Jet/CZF 2004-r/8.5" 3.73
-07'TBSS Stockish daily driver
[Linked Image]
#1071402 - 07/21/21 09:07 PM Re: Customized ZZ4 EPROMs for sale [Re: Bitflipper]  
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Bitflipper Offline
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Bitflipper  Offline
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Okay guys, I'm back after a long hiatus.

Some of you may remember I was struggling to get my new 350 crate engine running in my car. Went through a few mechanics before I found the right one. Thanks to any of you that helped me identify that the throttle/TV cable bracket was bent by the first shop and guiding me to the aftermarket bracket that bolts to the carb. That was a great start, but a lot more things needed to be dialed in after that and the shop didn't want to prioritize my car knowing it wasn't a daily driver. It was just too difficult to feel motivated to participate in the forum not knowing if/when the car would drive again. As of yesterday, I'm good to go and the car is driving well.

Anyhow, I freed up some slots in my PM box so for the backlog of those that still want a chip, drop me a PM. There are a few left that are already burned. These blasted "black sheep" blanks that our ECM needs are continuing to become more rare, we'll have to see if I can keep the price where I set it last.


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