headers do u need a tune ?
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Thread: headers do u need a tune ?

  1. #1
    Junior Member

    Join Date
    Sep 2017

    headers do u need a tune ?

    hey guys was wondering if after a headers install a tune is required ? I'm worries about back pressure/fuel richness ratio have u guys already put headers on your 4th Gen what have u experienced with this ? cats have been deleted so all egr eqip will be capped as well

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  3. #2
    What else is done to the car?

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