Quote:
Originally Posted by oreo_carName
Currently running the MAD secondaries and MAD catback. Perfect volume and tone in my opinion.
I have disabled ASD through bimmerlink and it did seem to help, but I still do notice a drone. I have a feeling that drone is just a "feature" of this engine though.
|
The drone is there even with the stock exhaust setup but its muffled by the cats. Once you make your setup more free flow, the sound is amplified including the drone so its more noticeable