Quote:
Originally Posted by mike@x-ph.com
Active Autowerke uses GESI cats that are EPA approved.
GESI cats do not throw a check engine light even if the car is in stock. The cheaper brands will.
Please note, that even if you have a tune that hides the check engine light, your car will fail emission testing if you are not using approved cats.
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Damn. That's daunting. I guess im just gonna go catless then.