I just put a full 4" HOG performance exhaust on my 05 CC dura/ally, I already have a finger stick, but have not put it on. I figure my truck is already throwing codes for the loss of back pressure since I eliminated the Kitty. No SES light,but I live in OH so hopefully I won't get one. What will these codes do? Cause any loss of power, de-fueling,??
Thanks,
T