https://x3.xbimmers.com/forums/showthread.php?t=1663766
Check this therad, as i see your car is in Europe, and in Europe we all fucked up with OPF filter, what made super turbo lag and actually no sound of engine!
Best solution - put straight downpipes, after put a 200cell sport catalyst with low backpressure in the place of current OPF filter and remap car.
That's way to make a perfect M car with proper sound and respone)
I notice that button of exhaust don't work in all cars with OPF filter