2015 BMW M4 F82 Exhaust Valve Disconnect Start Up and Idle

Disconnected the electronic valve harness from the Stock exhaust so the valves open all the time and never close. Sound is from a cold start in the morning and settles down once it warms up. Pretty loud compared to the electronic values being connected. Great and cheap why to make you exhaust loud.

By | 2017-02-05T12:35:29+00:00 February 5th, 2017|Categories: BMW 4 Series, BMW M4|0 Comments

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