I had the BMW performance power kit setup today (2012 N55 135 I M ) I quickly realized that the car is definitely more responsive at all RPM ranges. Throttle response is different and for the better.
Two thing for sure is that it completely changed the exhaust sound it's is much deeper and louder from 2k+ rpm and the burble is Beautiful on any gear went you release the gas
Burble,Burble
:b ulge:
,,,,,,,, I don’t thing need to add downpipe sound great and the power is good for go to point A to B… ….The car really rumbles now. I think the sounds make the car feel faster
The new software re-mapped the shift logic in the DCT, gears seem to be held a little longer, and shifts are quicker and crisper.!!!!!
I am very happy with the upgrade. Money well spent in my book, and having full BMW warranty support is good peace of mind.