2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.
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removed air pump and acv

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Old 02-18-10, 06:56 PM
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removed air pump and acv

Ok so i removed the air pump, split air pipe and i think its called the acv (the one that has a rubber pipe with a silencer on it and purges air from air pump). I made block off plates ,put on the dual alt pulley, and started it up. Ran fine,drove fine, but my concern is i can hear my stock BOV really loud now. I was only at 5-6psi. My question is, is this normal or is something not right on it. I love the sound of my BOV now but i like my motor to stay running even more. Thanks

MODS:custom intake pipe, Apexi gt spec DP,Apexi Gt spec exhaust, No cat, and FCD, Boost guage

The valve at bottom of pic is one of the ones i removed and blocked off

Last edited by florotory; 02-18-10 at 07:03 PM.
Old 02-19-10, 12:34 AM
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A custom TID/cone filter will make the BOV noise louder. The ACV and air pump can't possibly affect it.
Old 02-19-10, 06:52 AM
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thats the only changes i made to it. Prior to that i heard it a little bit but now it sounds like an aftermarket one.
Old 02-19-10, 07:06 AM
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What would it sound like if my BOV wasnt working at all? Lets say it wasnt purging air at all would the same noise occur? I just dont wanna mess up my Turbo or motor. Thanks again
Old 02-19-10, 10:39 AM
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Check for cracks in the line going to the BOV. Unless it is vented to the atmosphere like mine is then you barely hear it.
Old 02-19-10, 05:39 PM
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wierd thing is i just drove it and not a sound. It didnt blow off like it did last night.
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