Quote:
Originally Posted by alohasurftoad
if you have not done it already, remove the connector to the left exhast flap while it is open so that it remains open all the time. seal the open connector from the elements and "zip tie" it out of the way.
then, get this...
https://f30.bimmerpost.com/forums/sh...precision+ds-1 |
In sport+, that is always open. In sport (driveline mode enable in idrive), it opens under decent load / RPM, closes again at cruise.
OP. I have the Active Autowerke catback, and have similar results. I am running the ER catted downpipe, and the combo sounds amazing, but it's really only noticeable at lower throttle / higher load. As you crack the throttle open, or the revs come up, the car doesn't sound that loud.