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what is this tube?

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Old 07-01-04, 05:32 PM
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what is this tube?
its a 1990 gtu. this is the tube beneath the intake tube. i was replacing the old hks filter with a new k&n. this tube was connected to the HKS filter, and was almost entirely closed off through the filter, due to design, not it being dirty.

what id this tube? do i have to worry about it? can i close it off? do i have to buy a small breather filter for it? what happens if i close it off? etc, etc




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Old 07-01-04, 05:34 PM
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Is that your ACV exhaust hose & silencer?
Must not have an ACV, eh?
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Old 07-01-04, 05:35 PM
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...circleing the tube in adobe now...
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Old 07-01-04, 05:37 PM
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It looks like you are referring to the air pump hose?
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Old 07-01-04, 05:39 PM
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It looks like you are referring to the air pump hose?
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Old 07-01-04, 05:40 PM
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Originally posted by WAYNE88N/A
Is that your ACV exhaust hose & silencer?
Must not have an ACV, eh?



no idea
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Old 07-01-04, 05:40 PM
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sorry double post
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Old 07-01-04, 05:41 PM
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looks like the air pump hose
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Old 07-01-04, 05:42 PM
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Originally posted by enrique
looks like the air pump hose

ok. can i close it off? whats it do?
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Old 07-01-04, 05:45 PM
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breather filter
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Old 07-01-04, 05:49 PM
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It pumps air to your exhaust intake and opens your aux ports.
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Old 07-01-04, 05:54 PM
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closing it off is a bad idea then
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Old 07-01-04, 06:02 PM
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I'm about to post on the opening of the aux ports with air pump removed so check that post- but other than that I believe no harm no foul. Greg C.
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Old 07-01-04, 07:00 PM
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just pop a little air filter on it and then a big on for the AFM
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