There's a dyno graph with an M6 with the 3.5bar sensors that look like my graph, albeit pushing more power.
While too technical for me to explain/understand, I do believe its the cams and probably turbos. I suppose you can do aftermarket cams and move the powerband higher up, but why? You'd loose the midrange torque that 99% of us enjoy with these cars
I do not have pure stage 2 turbos, and probably would not even consider. Too much power for street tires is silly. I want to progress to 700s whp/wtq and call it a day with this car.
And I have never been to a 1/4 mile track in my life, although would like to someday when I find time. It'd be nice to say that you're in the 800s though at C&C