[Rev]

I agree with everything said except that a restriction in the exhaust system after the collectors cannot produce more torque under any circumstances. It just increases the pumping work and saps power (torque or horse power) from the engine.

I know this goes against some popular opinion, but it is well supported. Never do I see any professional drag racers, NASCAR, or other circle track racers use an exhaust system after the headers more restrictive than the rules require.


Rev