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Exhaust Scream Whistle
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Old 02 Jul 2012, 03:28 PM   #1 (permalink)
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Lightbulb Exhaust Scream Whistle

Hi im new on here so thanks in advance for any response. I have a standard 2008 WRX STI only mods a K+N Filter and Scorpion cat back exhaust 3 inch. I have just had the standard pipes taken off and replaced with the Scorpion. The original cone filter is in place the old exhaust was 2.5 inch. Since having the mods done I now have a quite noisy high pitch whistle coming form somewhere. I have been back today and there doesn't seem to be any leakage.

Has anyone experienced this before or do you think it is just a characaristic of the new exhaust? I bought a new Cone Gasket but the exhaust place have said the one that is currently in there standard one i Guess is fine. would there been any difference in cone size?
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Old 02 Jul 2012, 07:13 PM   #2 (permalink)
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Re: Exhaust Scream Whistle

scream at certain RPM??...if so,it's a pressure surge my VF35 does it around 4k mark
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Old 02 Jul 2012, 07:36 PM   #3 (permalink)
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Re: Exhaust Scream Whistle

Yes it seems to be circa 4K revs on full boost? so all good nout to worry about? just not used to it only been since i Changed to a scorpion exhaust it sounds quite good
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Old 03 Jul 2012, 08:43 AM   #4 (permalink)
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Re: Exhaust Scream Whistle

nothing to worry about fella,must be the K&N and Scorpion mix,same set up on my classic

tis amussing when you come along side an Evo with the surge starting,they look concerned n they you leave them behind
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