Hi, I'm thinking of trading in my 360 for a F430. I've done a test drive with a F430 which has a capristo exhaust. What I noticed was a hissing sound. Strangely, I only hear it inside (on drivers seat) and not outside the car (maybe too much exhaust noise). It's progressive: The more throttle the more hissing noise. The hissing noise is not overruling the exhaust sound but it's certainly present and reduces the exhaust noise enjoyment. I've driven another F430 a few weeks ago (not sure about exhaust, but quite certain its not capristo) and didn't notice this hissing sound. Does a capristo exhaust normally make this hissing kind of hissing sound? I also noticed the capristo exhaust has vent holes, by design appearantly, could that be it? (http://www.capristoexhaust.us/Ferrari-Capristo-Valved-Exhaust-System-for-430-p/f430%20ts.htm)