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post #1 of 4 (permalink) Old 04-23-04, 05:14 AM Thread Starter
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Whistle at idle??

Hey guys just fitted the Trickflow Street manifold and now there is this whistling noise at low revs what could it be? Vacum leak? Thanx.
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post #2 of 4 (permalink) Old 04-23-04, 06:17 AM
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Re: Whistle at idle??

Probably the throttle body, mine just makes a loud sucking noise.
Did you notice much difference from the manifold that you replaced?
What was the other manifold?

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post #3 of 4 (permalink) Old 04-23-04, 07:28 AM
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Re: Whistle at idle??

Could be leaking gasget somewhere?? Did you use silicon on the bottom valleys and not cork looking gasgets..TFS recomend silicon so inlet pulls down correctly..
Check around throttle body / egr gagsets...Is pvc valve in corectly??
Are all vacuum lines connected on inlet ??
There is slight more induction noise, thats due to better breathing...

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post #4 of 4 (permalink) Old 04-24-04, 01:50 AM Thread Starter
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Re: Whistle at idle??

Hey thanx for the input the old manifold was a old HO so i expect a fair bit of difference considering the Trickflow heads as well just havnt been able to drive it yet trying to get over a few tuning problems its running like a dog!
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