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Old 05-08-2013, 04:14 AM
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taper can increase velocity and or smooth the incomming air.
on a tb i doubt it gives any noticeable increase , unless of course u have a tb that is horribly designed

when it comes to replacing a stock tb with a larger or bored out unit most ppl think they are feeling a hp increase , when in reality if u take the stock tb at 1/4 throttle opening and then the larger unit at the same throttle opening the larger tb will alow more air into the engine.

so u dont have to step on the gas as far to accelerate like u did with the small stock tb

go to large with a tb and the throttle becomes more of an off on switch
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