Check Engine Light

[07rzrbackstang]

I just installed a off-road h-pipe on my 2007 mustang gt and the check engine light came on 5 days later. I know it's due to having no cats but does it usually take that long?? And how can I get it turned off? And lastly is it bad for my car if I leave it on till I can get it turned off??

[tc x 4]

Do you have a tuner ?

[07rzrbackstang]

No not yet, I don't have quite enough money to buy one yet. Is that the only way to turn it off?

[WillysYJ]

As far as I know that's the only way. I haven't heard of anything going wrong if you have a check engine light (unless it's something else).

[tc x 4]

Cheapest way would be to weld a bung hole in the pipe and install the 02 sensors. But that's money that could go towards a tuner. I installed headers an o/rx and am having the same problem. My tune has been changed 3 times. I've only driven the car 200mi since March because of it. Idk if it will hurt the car, probably not, but I'm not risking it.

[07rzrbackstang]

Yea my biggest worry is it hurting the car. I was a little puzzled by the fact that it took 4-5 days for the light to come on....is that normal?

[GTRob504]

Just go find a bolt to plug the holes and get a pair of MIL eliminators to plug into the sensors

[07rzrbackstang]

I don't think they make MIL eliminators for 2007 and up mustangs do they?

[GTRob504]

Originally Posted by 07rzrbackstang

I don't think they make MIL eliminators for 2007 and up mustangs do they?

You can get a pair of 2004 mil eliminators and modify the connector. I will see if I can find some instructions