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Installed Headers...now Check Engine light keeps coming on!!!!!!!

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Old 04-14-2010, 11:28 AM
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medion07
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St. Jude Donor '10-'12-'13-'14

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Originally Posted by jsdanehy


I have LG long tube headers with cats. It was also tuned EFI after the install. How can you run headers without a tune ?
Same here.



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