I'm looking for an exhaust that allows for me to keep the tamed conservative quiet stock sound of a stock E92 M3 80% of the time and yet be able to at the push a button let it be known the monster is alive 20% of the time...
I've explored and found many exhaust capable of delivering the loud deep sound I'm looking for, however I live in Arlington, VA where police have been known to stalk performance car drivers once you've gotten their attention.. So I would like to remain very low key in VA and let the monster out when not in my home state. Also I simply don't want all that attention all the time.. only when I want it at the push of a button..
So what I'm asking for is:
1. An exhaust that can be stock quiet
2. Able to get monstrously sexy loud at the push of a button
3. Will pass emissions and not void my BMW warranty.
Any recommendations you can give would be greatly appreciated..