Standard M3 exhaust question

[Andy335Touring]

Dose any one know how much power a standard M3 exhaust can flow before it becomes a restriction ?

I am using a Scorpion M3 exhaust at the mo but i want an exhaust thats a bit less noisey and that can flow enough to support 260-270bhp.

[Simon]

I am always reading how the scorpion on the M3 is supposed to be the worst power sapper of them all, and that the standard E30 M3 one is the best. I would imagine the standard exhaust should be fine for the power you're looking for. Supersprint do a race version of their M3 exhaust, but it has a straight through centre box, and obviously will be louder!

I am hoping to rolling road the M3 with the scorpion fitted in a weeks time, I will then be fitting a standard complete system (that C76jon so kindly donated to me!!) for the next rolling road day, to see how much of a difference it makes.

[Andy335Touring]

Cheers for the info mate,those RR figures will be interesting