Here is what I got. '05 Vette. Air Raid CAI. FAST 102 intake, LG long tube headers, 2 1/2 inch X pipe with SLP loudmouth 2 exhaust. I just put the headers on and all was fine until that. Running the 91 octane tune and now throwing a P0171 (Bank 1 too lean) code. Any advise to fix this. Was told by ...

I am running the 91 octane tune on a '05 vette. Just put an LG long tube header with high flow cats on it and now I get a P0171 (bank 1 too lean) code. What is the best or easiest fix for this? Any suggestions.