@valvetronic making the S54 sound like a v10…no gate keeping here. - @activeautowerke Headers - @sunbeam.motorsports Equal Length Section 1 - Stock Section 2 - @valvetronic Titanium Valved Sport Section 3 This is easily the best exhaust configuration on the market for the E46 M3. With the valves closed, you can daily drive the car with zero drone, and valves open it sounds identical to a V10. #e46 #m3 #s54 #carsofinstagram #bmw