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pwned
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4,712 Posts
Discussion Starter · #1 ·
Hey guys,

I was thinking, if you have a header installed, throws a CEL, then do a tune to eliminate it. If you go back to your stock tune, does the CEL come back?
 

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Wales!!
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10,218 Posts
dont know? i think it deletes the 02 sensor so i dont think so. but if u go back to stock u can put the tune back to stock as well
 

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2focusedracing
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1,799 Posts
Hey guys,

I was thinking, if you have a header installed, throws a CEL, then do a tune to eliminate it. If you go back to your stock tune, does the CEL come back?
yes, the tune turns off the 2nd. o2 sensor. when you go back to oem tune your o2 sens. will be enabled again and throw a code.
 

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pwned
Joined
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4,712 Posts
Discussion Starter · #4 ·
Hmm, so this isn't a good thing if you would have to bring in your car under warranty to a dealership for service I guess... bummer..
 
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