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Im stumped and need help bad

592 Views 3 Replies 3 Participants Last post by  RAPEDMUSTANG18
Ok guys i recently put long tube headers on my 02 gt. When i did the check engine light came on, so i turned off my o2s with my diablo tuner. After i turned the o2s of the car ran horrible stumbling and falling on its face. So i turned the 02s back on and the car runs fine once again but now the check engine light is back on. Is there any suggestions for what i could do to have my light off and still have a great running car?
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You may want to do some research on MIL Eliminators and see if that would solve the problem with your current set up. Check out this article to get you started.

Ford Mustang Long Tube Header Install
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