i wouldnt keep beating it untuned/unchecked! have it looked at professionally to be sure. LTs will make the car run lean. not only are you getting more air out of the motor hence getting more air in BUT you moved the O2 sensor another 5 feet away from the ports. all that adds to lean. MAYBE. haha cars are finiky. did you replace the O2's wen you did the headers? if not WHY!?!?!? alot of things could also add to a bad "tune" ands not even the tune.
__________________
1998 Firebird:buncha parts thats used to make it go fast..... not so much anymore. 
BAAAAAA!!!!!!
|