Product Details
Valvetronic Designs is proud to now offer their exhaust controllers for use with most BMWs. This small plug-and-play unit connects into the factory wiring harness and allows the driver full control of the exhaust valve whenever they want.
These controllers connect to the vacuum solenoid in the trunk to provide the driver control over their exhaust flap. Before purchasing please ensure your car has a VACUUM style exhaust valve. These DO NOT fit on electronic valves.Â
This modification is 100% reversible and allows the ability to return to stock condition at any time!




















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