Underdrive Pulley: Useless?

Underdrive pulleys usually are a performance enhancing item that increases the torque and horsepower output of an engine by reducing drag caused by belt-driven accessories. Horsepower gains from underdrive pulleys

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Underdrive Pulley: Useless?

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12-17-2014, 12:58 AM	#3 (permalink)
Trips Administrator Join Date: May 2009 Location: Disneyland, Ca Posts: 8,732 Drives: 🔰 Rep Power: 10	Underdrive pulleys usually are a performance enhancing item that increases the torque and horsepower output of an engine by reducing drag caused by belt-driven accessories. Horsepower gains from underdrive pulleys alone are usually around 4-7 hp. FLUJOKE likes this. __________________

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