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ATG · 08-30-2007, 02:59 PM

Do aftermarket catbacks have a flapper valve? if not, then those running the catbacks should have a bunch of error codes recorded in the ECU, right? Or does the ECU only detect the unplugged actuator?

08-30-2007, 02:59 PM	#56
ATG Major 68 Rep 1,058 Posts Drives: f30 328 xdrive, e90 335i gone Join Date: Feb 2007 Location: Eastside iTrader: (0) Garage List 2013 BMW 328i xdrive [0.00] 2007 e90 335i [0.00]	Do aftermarket catbacks have a flapper valve? if not, then those running the catbacks should have a bunch of error codes recorded in the ECU, right? Or does the ECU only detect the unplugged actuator?
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