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post Oct 15, 2006 - 12:22 AM
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pittfirefighter



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Turbo question, i run a pretty stock 96 celica ST so this isn't for me but a general question for a friend that just got himself an Evo (damn its nice). Anyways, with a new greddy type rs blowoff valve installed, what else must be installed to get that "whoosh" sound everyone is so fond of? I hear it needs an open element style air filter? However it looks that the Evo has a cold air intake stock, so is this referring to the turbo intake? I think this question is pretty general for all types of cars but if i'm wrong please let me know. Just what does he need to get the "whoosh"?


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post Oct 15, 2006 - 12:42 AM
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brianforster

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he needs to vent the blow off valve to atmosphere to get the sound. cars without the "pshh" sound are probably routing it back into the intake. thus it is muffled.

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