TB spacer, depending on engine size, will add around 0-4hp. Some people that I know of (with other mods) said the TB spacer brought down performance in the midrange. I'd never buy one for my vehicles. Better to spend your money on a good cold air intake setup.
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1993 Dodge Spirit 2.5L TBI, 100hp
1999 Ford Taurus 2V 3.0L, 145hp
2000 Dodge Durango 360, approx. 285hp @ crank
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