Quote:
Originally Posted by bulldog x6
Incorrect - the CEL does NOT impact performance. The CEL just signals the cat's, if they were there, are not working, but without a proper tune, A/F ratios may be off which WOULD impact performance. Also - no point in running a downpipe without a tune (for extended periods of time anyways), as there is a lot of power left on the table without tuning.
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aaah I see. cool, something new for me!
