Franciacorta Driving school instructor with m2 competition, no, very disappointedthe fellow in the bmw must not have been to happy.
Dyno shows 270 HP to the wheels with stock exhaust so somewhere around 310 HP with average driveline loss. A free flowing exhaust shows around 283 HP to the wheels.Watch this earlier. Very stable and smooth. Like you said, putting out closer to 300-310 right? Even brand new I'm surprised at the punch this thing has