Got an exhaust system put on the 330CI today from Powerflow in Stafford. The guy there was a top bloke and knew his stuff very well. It is definitely louder but not obnoxious.
I made a quick interior video to let people know what the noise is like inside. I asked the fitter for an exhaust which was quiet at low speeds but which sings at high revs.
Next video to be made: fly pasts and exterior!
Video (Fuel always on reserve )