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Old 03 July 2009, 10:17 PM
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walsh128
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Default whats that weird noise

whats that weird noise from highly modded subarus. You hear it when they change gear and sounds like it replaces the noise the dump valve makes.
I asked a couple of people at the scoobysprint and they didnt know either.
Old 03 July 2009, 10:22 PM
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burbling1
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Originally Posted by walsh128
whats that weird noise from highly modded subarus. You hear it when they change gear and sounds like it replaces the noise the dump valve makes.
I asked a couple of people at the scoobysprint and they didnt know either.
That my friend is pigeon, also known as wastegate chatter. For extra pigeon turn the boost up, bin the dump valve and fit an induction kit.

Please note. doing all of the above just for noise is not advisable as it could quite easily blow your motor.
Old 03 July 2009, 10:27 PM
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tweaks
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front mount and no valves gives you a very loud angry pigeon ,like the one under my bonnet ha ha
Old 03 July 2009, 11:23 PM
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Default pigeon english

Originally Posted by burbling1
That my friend is pigeon, also known as wastegate chatter. For extra pigeon turn the boost up, bin the dump valve and fit an induction kit.

Please note. doing all of the above just for noise is not advisable as it could quite easily blow your motor.
Cheers
you learn something new every day.
I couldnt even describe what the sound was but pigeon sound about right.
Old 04 July 2009, 12:23 AM
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Aw gawd not again !

LOL

That noise, my friend is the sound of stalling air, as it parts company from the leading edge of the compressor blades in the turbo....

Mine does it MINT ! ( MD321H), a silicon intake has magnified the noise too !

The WYIOC are having a photo/video shoot this coming week, but I'll try and Youtube a sample if possible.

HTH

dunx
Old 04 July 2009, 12:44 AM
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should be some good vids dunx

lots of pigeons ha ha !!!!
Old 04 July 2009, 01:13 AM
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Shreded ?

LOL

dunx
Old 04 July 2009, 10:17 AM
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Wategate chatter my ****! THERE IS NO SUCH THING!!!!!

It's compressed air passing over the turbo blades the wrong way causing stall and the noise. Simply run with no dump valve and you will get it, not great for the turbo though.
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