Tuning issues/bad tuner - ECU problems?
I installed a JLT CAI and got a custom tune at a shop in Houston that shall remain nameless for now.
They were able to only increase power by 20whp from baseline. Not much but if it runs/feels good I would pay and be on my way. However, the AFRs are constantly messed up and they have tried to fix the tune twice already. AFRs drop to a very rich 11.2-11.6 and stay there till redline when I go WOT at 3k RPMs or lower. If I go WOT above 3500 RPMs (lets say 50 roll, 3rd gear) the AFRs don't drop at all and stay lean at 13.8-14.5 to redline.
I'd hate to say the tuner is bad because it doesn't really seem that difficult to hit target AFRs on a pretty much stock car. After I contacted them again they said "I don't know what else you want us to do. I have tried everything and can't get the results you are looking for." Not the best response...
Any other reasons for the out-of-wack AFRs?