hi ive posted a few times bout my car, what its doing is its hesitating and stumbling and hiccuping like im in too high of a gear (that is what it feels like at least). and i thought it was a fuel filter so i changed that and its still doing it. it staarts up fine, but i noticed this all started very small at frist, a few hiccups when onthe highway every couple weeks and just got worse over time.. and it all started after i put my non catted x pipe on. could that have any thing to do with it ? that the check enigine light is on cuz i didnt put O2 delets on it? should i try to put them on or will it not make a difference? could it be spark plugs? TPS sensor? and will any of these potential problems spit codes so i can get a OBD test done? thanks again
98 mustang GT 5 speed.
98 mustang GT 5 speed.