This week I installed the G56 exhaust on my 2012 M3W. The performance results were impressive. I think it's the best improvement I've made to the vehicle. It's like it opened up a new personality for my Morgan.
The sound is deeper and louder - but not too loud. If I'm really hitting the throttle hard, I can hear a cackling sound between gears.
Maybe part of the stronger performance is due to my city's 4,226 ft elevation (1,288 m). The M3W's engine seemed strangled with the original exhaust.
Hunter
