Been there, done that - twice!
Before
2011 E90 M3 6spd. Added Akra EVO (
), tune & filter. It was better and faster but after 1500 miles I upgraded to an ESS VT2-625 kit. Sold the car...
Now
2011 E90 M3 DCT. Added Akra EVO, ESS tune & filter. It was better and faster but after 2500 miles I upgraded to an ESS VT2-650 kit. Wicked
Summary: If you are a power junkie an M3 with bolt-ons just doesn't cut it.