Say we have heat as being fast moving. Say the faster you help move the heat, the better the next cylinder fill of fuel is not spent fuel you already fired off. Will the torque change? My guess is slightly. You might feel some smooth, but that might be it. You did not add more fuel, so even that, it just a smoother running ride. Trombone is the tone. You could take a bearing, braze it to the opening to slow the air or keep the hot air in so the heat stays in is called a, Muffler Bearing. An dare ya go!