i believe i found the fuel problem i've been messing with for a while. The stock FPR is only laying down 30 psi instead of 40-45. I ordered a B&M which is adjustable and should fix the problem. My question is has any one else had any problems like that before? Any trouble shooting problems with a obd2 h22a in a 4th gen you could share may help others in the future. I know there is write ups on this in the FAQ but most of the problems i had weren't even brought up.