Quote:
Originally Posted by Bowtie724
When you put headers you must tune the car.
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When installing headers, there is no need to tune the car, but that doesn't mean you can't. To get the most power out of any mod, you can tune it. If you are not running cats, you might have to make an adjustment with a tune, so that you don't get a CEL. If you are running cats, you shouldn't have an issue.