Amongst many other mods, I have installed a GMPP header/manifold (custom port and polish done on top of GM's work) as well as an XTC B pipe with NO cat.

Today I thru my first engine light as both O2 sensors are reading the same voltage. I know this as I confirmed it with a Tech 2 and reset the code only to have it come back 12 miles later. My question is this...

Has anyone done this mod and figured out how to install a resistor to fool the computer to stop the error? What size/type resistor did you use?

I can go into more detail, but I'm wondering if someone has a quick solutio they care to share.

Thanks,
AK