C'mon Dusty, how dumb do ya think I am!? More flow = more velocity = more "chasing". "Chasing" would be dependent on the exhaust velocity. The more velocity that an exhaust system has, the more exhaust gas it will "suck" out of the cylinder because of the pressure differences. So with less velocity you get less pressure differences as well, thus leaving some unburnt "hot" gas in the cylinder, increasing cylinder temps and also creating a somewhat rich mixture, resulting in less power/torque. Now if we really want to get technical, we can go into the theory about exhaust gas temperature changes as they flow from the cylinder through the system, but we won't go there today. Mmkk pumpkin?
