[Warp Ten]

I have a 2019 540xi M Sport and also wanted a sportier exhaust sound. I went with the BMW M Performance exhaust kit and had my dealer install it. About $2,100 installed as they gave me a parts price that was close to other internet prices and the labor to install was only $225 (Per BMW; the exhaust is available through the BMW parts or car website and specifies that labor cost). Parts costs included muffler, clamp, plug cover for exhaust valve electrical plug, tips and valance. I asked that they save and give me all all the takeoff parts in case I decide I don't like it and want to reinstall the original; they now reside in my garage.

The sound if definitely louder, especially on initial start up and it sounds great when you use your paddle shifters, which I do from time to time. Via Bimmercode I have set my car to always start in Sport, rather than Comfort, and when I push the shift lever left in to "S" mode (but leave it automatic) it also sounds good. There is some resonance in the 2,000-2,400 rpm range, primarily at shifts under moderate throttle, as the engine seems to end up in that range after each shift. On the highway and most of the time around town I don't find resonance or excessive noise to be obvious or objectionable. If my wife is in the car I am less aggressive on the throttle so it is a bit quieter in general and on shifting. Under heavy throttle in Sport it really bangs the shifts with a fairly loud noise that I generally characterize as a fart. Despite that characterization, I don't find it objectionable when I am accelerating hard; it just make a loud noise on hard throttle shifts. Overall I am OK with it at this point and plan to keep it unless my wife objects strenuously, which she has not so far. In fact, neither she nor a number of passengers I've had have commented on the louder exhaust. The look of the tips is fairly stock BMW, which is fine with me. Anyway, I hope that helps. My suggestion is that you find someone in your area who has also gotten this or another exhaust and see if you can get a ride. Good luck with your quest. You will enjoy the car in any event. ---Bob