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What is the purpose of this hose? [pic]

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Old 09-03-03, 09:01 AM
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What is the purpose of this hose? [pic]

What is the purpose of this hose on that side of the airbox? It connects to nothing.

Last edited by WaLieN; 09-03-03 at 09:08 AM.
Old 09-03-03, 09:05 AM
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That's the air pump relief. The ACV controls what happens with the air pump's air, and when it doesn't need the air for some emissions reason it dumps the extra to atmosphere. The air goes to a muffler in the airbox to quiet any noise, then out to atmosphere through that tube.

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Old 09-03-03, 09:09 AM
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Ahh, I see. Thanks for clearing that up -- I learn something new everyday, hehe.
Old 09-03-03, 09:28 AM
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Yea, that hose goes nowhere. Took me by surprise also when I need to remove my airbox to install the ProfecB.
Old 09-03-03, 03:15 PM
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Is that the hose causeing the "Moo"ing sound, when removing the stock airbox? or is that a different hose ?
Old 09-03-03, 04:26 PM
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Originally posted by DCrosby
Is that the hose causeing the "Moo"ing sound, when removing the stock airbox? or is that a different hose ?
You got it! That's the "Moo" hose.
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