m3 cams dont really give your a car a rough idle.. i believe the shrick might..but they are aftermarket parts.. i dont have much information on cams but i beleive it has to do with the degree of the cam etc that makes your car idle rough (which isnt a bad thing, and as i said before, with exhuast sounds awesome haha) anyways im sure you can run a supercharger with cams.... just a matter of getting it tuned...
That would be a kick in the arse since cams will kick in in the higher rpms and the supercharger going all the way through.... can you say vroom vroom
David