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Straight pipe

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Old 08-05-2006, 04:04 AM
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Default Straight pipe
Those of you with a straight pipe (cat delete)...

Do you notice a change in sound high up in the rpm? Not just the tone change but a bit of a whoosh sound as you change gears? I have not noticed this with the cat on so I am attributing it to the de cat. Anyone else notice this slight whoosh/pssss noise?

All bolts and fitment has been checked. I noticed it when going through a tunnel. Thanks
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Old 08-05-2006, 04:25 AM
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Not really, but you have a different system to most (J's?)

Doesnt sound like much to worry about mate.

I notice a tone change - but no whoosh!

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Old 08-05-2006, 04:27 AM
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AB
maybe it's the sound of the engine switched on and rotating?

You don't hear it too often
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Old 08-05-2006, 04:28 AM
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A new one!

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Old 08-05-2006, 04:48 AM
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Thanks guys

I already found the answer - it's normal due to no heat shields on the de cat pipe. PL also noticed the same whoosh sound.
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Old 08-05-2006, 05:07 AM
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You just read my mind, that's amazing AB!
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Old 08-05-2006, 06:26 AM
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I had the slight 'whoosh/pssss' sound when I had the Toda manifold fitted.
Now it can't be heard, probably due to carbon build up.
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Old 08-05-2006, 07:25 AM
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Is this sound bad or good?
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Old 08-05-2006, 07:37 AM
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AB are you trying to imitate a dump valve and becoming more

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Old 08-06-2006, 06:21 AM
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