You guys are taking this thread a different direction.
Altho, for my $0.02, I wouldn’t switch to an M2C. The looks, sound, and interior of the M2 is much more pleasing (and classic, IMO). Plus, I’d have to do all the same mods to suspension and braking to make an M2C on par with my M2.
Sure, you can tune the S55 to put down great numbers on the dyno and street, but the S55 runs into heat issues on track, as well—if you’re really pushing it.
I’m still waiting to see someone with a lot of track experience post up some times in the M2C that shows it’s measurably quicker and can last 45min on track with the added power. Even if it were, I’d still keep my ride.
Case & point for me: for those of you that watched the on track BMW Safety Car display at the beginning of the rain delayed Czech MotoGP race, the best exhaust note by far was the OG M2 Safety Car.
Lastly, the N55 is more fun around town. A quick dab of the throttle gets you a ton of torque and wheelspin. With the S55, you have to wind it up (it does pull great above >6k, tho).