My first thought after reading the thread title was the only way to stop
the mods is to sell the damn car! Have fun with your BBK, I just upgraded
to Stoptech Trophy's and the difference from stock is phenomenal.
2011 E90 M3 ZCP Lemans Blue / ESS VT2-600 Supercharger / Stoptech Trophy BBK / M-Performance Exhaust / Ohlins Road & Track / Audiophile Sound System / Beltronics STir Plus & LI