I bet it does trumpet. I have the basanni hi-flow cats welded into the bullitt h and corsa extremes and at 2,200-3,500 rpm it makes a farting sound. Other than that it sounds great a little raw and rough sounding. I honestly can't tell much difference between the types of corsa's, but the o/r pro-chamber flows more than my current mid-pipe.
I tried the gtb's way to quiet, gta's sounds awesome but not quite loud enough. I really want to try the pro-chamber with the hi-flows and see if that will cure it; or try a set of Mac axle-backs.
I tried the gtb's way to quiet, gta's sounds awesome but not quite loud enough. I really want to try the pro-chamber with the hi-flows and see if that will cure it; or try a set of Mac axle-backs.