Quote:
Originally Posted by ThermionicScott
A lotta "shoulds" and "ifs" and "no one ___ yet" in there. We like tested and proven stuff on this forum.
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Nothing works tested and proven 100%, however, back pressure allows more hot exhaust in the cylinder to warm up the incoming cold air/fuel.
It's a proven fact to increase torque and MPG. That's why many manufacturers do this especially for small bikes, and performance cars as well, using exhaust back pressure valves, or some form of restrictive exhaust can.