Thread: Fabspeed Sport Cat Downpipe
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      03-26-2020, 08:22 PM   #17
Nezil
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Drives: LCI '18 6MT M2
Join Date: Jul 2017
Location: San Francisco Bay Area

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Quote:
Originally Posted by MetalMK View Post
Will car run rich with just a sport cat and stock catback and no tune?
No, our cars have an oxygen sensor that’s constantly measuring mixture. The DME will adapt.
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