[TerryMason]

I've heard alot about throttle body spacers over the years, but I'm not sure I understand or believe alot of it.

Unless the factory installed a spacer in there that was purposley restricting airflow I don't see how raising the trottle body up 1/2 inch would help. The "cyclone" thing just sounds like marketing talk to me.

Am I way off? Would a throttle body spacer do anything for my 4.0?

	Throttle body spacer A throttle body spacer is designed to improve the quality of the airflow, allowing air that is more condensed and, thus, more oxygen laden, to enter the combustion chamber. The result of this is a more efficient burn, which serves to release more energy from the fuel, making more horsepower available.