I was wondering what other comparative systems utilise as I have heard you can can go as far as 57mm on the outlet on the muffler.
I would imagine this would be rather loud but after removing the std airbox the other nite and fitting the bellmouths(blue verlocity stacks) to the fcr's noise is becoming less n less of an issue and ultimately more power equals more adrenilin.
Options open if I go to 57mm are that maybe I could get a removable restrictor(for those track/hard ride days) made to appease the neighbours.
Be interested to know what your acra and over systems outlet size is and or any of the other performance cans out there in use.
Cheers Brian (he's not the massiah just a very naughty boy...lol)
