Monday, December 17th, 2012 AT 10:44 PM
What PCM systems control air/fuel ratio. My car is running rich and I need to lean it out. Rebuilt engine with custom ground camshaft, headers and dual exhaust. I have the software to make PCM adjustments, but I'm not getting much help on this subject yet. Want to do this myself and not pay for someone else to dyno. Self accomplishment thing.