Mustang1994

I put some off road h-pipes on my stang, (sounds AMAZING). But I once heard of a way to fool the computer to not have the check engine light on cause of the cats. Anyone know?

mattdel

if you have a 94, you wont have a check engine light for the cats.

mjr46

mil eliminators

Mustang1994

I have a 94, and as soon as I drove the car around I had the check engine light come on so I figure it was that.


Thanks. For the name

mattdel

MIL eliminators are for cars with 4 O2 sensors, as the rear o2's monitor catalyst efficiency, but that is only on OBD-II cars.
you do not have ODB-II, thus you don't have "rear o2's", and you cannot get a check engine light for the cats.

scan the car, don't guess.

Mustang1994

Ok, will do. Just put the two together thinking, I put the off roads and the light came on. I will auto zone it thanks.

mjr46

I know that mattdel, I wasn't paying attention to the year of the car I just wanted to post something quick to see if something I was working on for my profile worked and it didn't[:@]

red95gtconvert

Your car could be running lean now, I know mine did when I was running an offroad H pipe. Check and make sure all the bolts are tight because if any are loose,especially the ones before theoxygen sensors you could be getting a false lean condition reading from the O2's.

Mustang1994

Ok