I have a h22a4 swaped into a EG.Around 3-4k rpm it sputters in 2nds gear and up.when i rev at stop it dosent sputter at all.No cel codes pop up either.Im thinking its the o2 sensor because i had so much trouble wiring it up and when i unplug it makes no difference.i had trouble wiring the o2 because i used a cut up vx engine harness on a ex car.Would a 02 sensor cause this?