What are torque cones for?
Torque cones are used to create a higher velocity of exhaust flow in the exhaust pipe. This higher velocity generates an increase of torque from the engine. There are two other performance benefits gained from the use of torque cones. One is the creation of velocity, which actually scavenges the exhaust from the exhaust port more efficiently. This assists in evacuating gasses from the engine. The other benefit is that the torque cones help create an anti-reversion effect. This eliminates the tendency for spent gasses to be sucked back into the combustion chamber during the engine’s intake stroke. The value of anti-reversion is a cleaner air fuel burn during combustion and a cooler running engine.