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MGraves · 04-12-2019, 04:15 PM

I had a custom catback exhaust built for my 99 986. Removed that HUGE exhaust and had a new free flowing catback system custom done. Sounds GREAT. But in less than 3 miles the CEL came on. never touched 02 censors. any ideas?

04-12-2019, 04:15 PM	#1
MGraves Registered User Join Date: Apr 2019 Location: S. California Posts: 2	new catback exhaust. CEL came on. I had a custom catback exhaust built for my 99 986. Removed that HUGE exhaust and had a new free flowing catback system custom done. Sounds GREAT. But in less than 3 miles the CEL came on. never touched 02 censors. any ideas?