Thread: Blow Off Valves
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Old 05-25-2004   #6
LightningGSX
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Join Date: Nov 2003
Location: St Paul
Posts: 1,390
You are wrong, I'm not even gonna bother to look at that page because I'm guessing they are wrong also.At idle(when MAP is vacuum), the air inside the I/C piping is below atmospheric pressure(or at max in equillibrium with atmospheric), they is no way(without breaking the 2nd law of thermodynamics) air can flow out of the BOV.Its possible your turbo(spinning at idle) brought the air inside the pipes above atmospheric(not likely), in which case it could flow out.In the case of the Mazda, it was in fact running LEAN, causing shitty idle.
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