well my car is finaly fixed after screwing around with it for 3 months. it was idling ruff, idle would go up and down, would get code 41 and 91. turned out to be MAF, as a word of advice dont bore out your stock mass air, its not worth it. well thanks every one for your help, now i can fall back in love with my car all over again. so anyone want to race hahaha.

so what did you do to fix the old MAF did you get a new stock one or upgrade

ya i just got a new stock one, i tryed taking out the new sensor and putting it in my old bored out one but it made it idle funny, so i put it back to both new parts. you could really feel any change in hp maybe like 2 poneys, id rather have it runny perfect, plus i could just up my nitros 25 haha.

ORIGINAL: zex92mustang

well my car is finaly fixed after screwing around with it for 3 months. it was idling ruff, idle would go up and down, would get code 41 and 91. turned out to be MAF, as a word of advice dont bore out your stock mass air, its not worth it. well thanks every one for your help, now i can fall back in love with my car all over again. so anyone want to race hahaha.
;)