Quote Originally Posted by Quik View Post
dont forget that no matter what maf you have on a GMT800 truck the PCM is hard data at a set value. nothing is gained past that point then you use a half breed tune of maf/sd

on the GMT900 trucks its totally different
Can you explain the differences and how it works? I understand that the OS on the GMT900 is 3bar capable from what I've read. I also hear the MAF is good to much higher levels than the GMT800 one. In your opinion, what would be the best way to tune a NNBS turbo truck? I know Greg is full on SD, but I've read about a lot of the Vette and Camaro guys using the MAF.