OBDII CAN Module for BMWGives you instant control over your tailpipe exhaust flapper valve! 2012+ F & G Chassis BMW models are equipped with an electronic valve in the tailpipe that helps control the exhaust sound according to a profile programmed from the factory. This handy plug and play module lets you take control of your flapper valve right from the driver's seat. Go from sounding 100% stock to an exotic exhaust system for a fraction of the cost with just one click of a
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