Getting my 08 tuned right now (boost solenoid, UEL header, Perrin intake, GMS inlet tube, catless downpipe). My tuner is not able to hit his boost target and can't figure out why. He was having some trouble with the
AVCS tables but thinks he has those figured out. Now he is adjusting the timing and is not reaching the boost levels he wants. Anyone have any ideas or tips that would help ...