Quote:
Originally Posted by RPM1123
My last car was a non-MPPSK F30 340i.
When I picked my M340i up 2 weeks ago, the exhaust impressed me a lot. In Sport+ there were nice bangs on upshifts around 4-5k RPM and much louder burbles and pops than my last car.
At around 400 miles these exhaust characteristics have disappeared completely. Now the car sounds like an F30 340i when I let off the throttle, burbles are very quiet and muddy 
When the engine is cold the exhaust goes back to sounding good, but within minutes the engine warms and the burbles and upshift bangs disappear completely.
Anyone else with a couple hundred miles on their M340i observed the same thing? I remember my F30 340i was usually slightly louder burble-wise when it was cold, although I don't recall the exhaust characteristics changing significantly in the first 600 miles.  |
Drive it harder. Redline in 2nd or 3d and drop throttle see what happens
