Active Autowerke F87 M2 Prototype Exhaust with Valve Control

Quick clip of our prototype M2 full exhaust system. The car has a catless downpipe and our straight through 3.5" mid pipe and rear muffler. With the valve closed the exhaust is forced through an additional straight through muffler that quiets the note, which is perfect for cold starts or when cruising through residential areas.
Please ignore the exhaust tip placement, we have cut and rewelded 6 different exhaust muffler configurations before we settled on this one, and each time the tips were moved slightly. They will be perfectly placed on production units!
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