Quote Originally Posted by 96/chevy/pu View Post
What are we working on, what code numbers, any mods, how many miles, can you identify which cylinders are misfiring?
It's a 2000 Z71 new body, 5.3, bout 120,000 miles on 05 avalanche motor. Only mods is spectra cold air, screen removed on MAF, exhaust, and mid grade tune from Nelson. I can't tell which is misfiring. That's all it says I deleated the codes but ill make it doit tomarrow n get them. It has done it b4 with the old stock computer I had diablo sport on it then. But hasn't done it in a long time since the tune. But I can make it do it anytime now, seems like as long as there's no load on the motor it will do it from 2000 rpm up