BOSTONSTANGS.COM

buy the new ones ill send you a $10off $25 purchase at advance auto
so buy one then go back and buy another so you save $20

antoher thing is disconnect you battery so that ur ecu will reset to the new exhuast do you have any cats if you dont you need mill eliminators so it tricks your computer so it runs right
the link i have for the coupons is on newengland-mortorsports.com so you might have to sign up to get them but it is worth the savings

here is a pdf of the coupon

i guess mills are for 96 up

so you guys think if i just disconnect the battery the ecu will relearn the new setup without the o2 sensors? i forgot to mention my check engine light is on without the o2's as well

you should just buy new o2 sensors
if you don't your will not run rite, just fix it the rite way and be done with it


after you install the new o2 sensors then reset the ecu
the light should go out and it will run good again

You need O2's period.


Heat the old ones up with a torque, put the closed end of a box wrench on them and whack the wrench with a hammer. Should come off then.

If not, buy new ones.


Either way, you need them. They are prob the most important sensor in an EFI system

ummm, you don't "NEED" o2 sensors. They're nice for a stock-ish stang but once heavily modified i'd rather not have them. The only time the o2 sensors are used is during idle and part throttle cruising. As soon as you hit WOT (actually well before WOT) the car switches into Open loop and completely ignores the o2 sensors. Personally i like to keep my car in open loop, so my o2 sensors aren't even being used. Had it tuned this way at Dez racing, gives complete control over the tune and this way the computer won't try to learn around the tune. Then again my car is nowhere near stock. I have two brand new o2's in my car (literally less than 5miles and maybe 30-40min of running time) that i'd probably sell dirt cheap if you still need/want some.