2015 BMW M4 F82 Exhaust Valve Disconnect Start Up and Idle

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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.

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

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