I am really sonsidering order this mail order tune. Heard alot of people in the chevy truck using them and getting serous results! The pcm knocked about 4 tenths off my friends stock c3 denali. I was wondering if anyone on the board had one?

 

Anyone?

 

I've got one and it's doing great performance wise, but i'm getting quite a bit of detonation at the high end. Maybe it just takes a while for the pcm to relearn how to minimize this???? When you first hook up the new pcm it'll spit and sputter and die a few times until it relearns to idle right, so don't worry if you decide to get one and it won't keep running right away.