Bmw M3 Competition 2025 Exhaust Valve Mod. I've noticed before this mod that if i drove in sport mode & manual that doing lots of down shifting would lead to the flap opening, however if i stop doing that for even under a. First is a return to vacuum valves.

If your car is equipped with factory exhaust flaps, with or without a center console button to open or. If you can’t afford it now, just save up for it.