Hi guys, I'm debating a good friend of mine, who also drives a F430 Berlinetta. We got our cars at the same time and had the dealer install for both of us the Capristo Valve Exhaust Controller. Works perfectly! Small remote in the cockpit and we can switch between valves opened and closed for the exhaust system. We love it! Anyway, we had the discussion about the following: I have the feeling the valves, when closed, cause all the exhaust gases just go through the rear muffler and the 4 exhaust tips. Valves open would mean that exhaust gases don't pass the rear muffler and don't - or partially - go through the tips, so part of the exhaust fumes are not 'silenced'. Hence, the ROARRR! Anyway. I purchased a set of Capristo headers that are being fitted as we speak. My friend would really like to upgrade his rear silencer. He'd like to keep his valves. Both he and his wife would like to travel with the option to have a bit more silence. If he upgrades the rear muffler/silencer with an aftermarket valved system, I told him that the effect of that exhaust would have little to zero effect noise-wise, because I believe that he would only hear an effect up until the moment the valves would normally open (+/- 3.5k RPM). At that point, the sound would be (partially) unsilenced anyway, so the difference with the valves open in an aftermarket system or the original system would be negligible. I believe that aftermarket headers and/or cats would be needed to make a difference from the point the valves open on... Am I wrong? How would these 'valved' aftermarket systems work then, making a real difference compared to the original exhaust?