hey thanks bitflipper. I am getting code 24. where is the vss located? I thought I read somewhere that it was part of the speedometer? Im going to lubricate my speedo cable might just be a little sticky causing the speedo to be off. if not I will try replacing the drive gear. and yes I have an o2 sensor and bung on order I do want to put that back in the system. im going more for looks and fuel economy then full out power.