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Adding resonators and HFC to x-pipe?
Is it feasible to add 2 resonators and 2 HFC's to an x-pipe that has neither?
I do not like the raspy sound of a resonator-less x-pipe, and my car is still under warranty and I'd rather not bring up a CEL and want to be emissions compliant.
What would I need from a HFC standpoint to keep it compliant?
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2009 BMW M3 E92 6M AW/FR
Eibach Springs + H&R Front Sway + LUX AE + LCI Taillights + BMW Performance CF Spoiler + Bastuck Clubsport Exhaust
Last edited by mkiv808; 02-05-2013 at 10:11 AM..
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