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R32 Gtr Turbo Noise?

T04GTR

By T04GTR,
in Engines & Forced Induction

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T04GTR Grand Master

T04GTR

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Posted (edited)

:( hi all. :D:):)

this ones got me stumped.

i took my car up the old road on friday and now as soon as it heats up the normal woosh noise from the pods changes pitch at about .6bar and over(stock turbos)

its hard to explain its sort of like that to4 bearing type whine but a air noise instaid

sounds like a roofrack wind whistle noise only faster.

you can make it cut in and out by feathering the throttle holding boost at .5-.6bar.

its quite loud. its definatly a air noise,whooshy with a low pitched whistle :huh:

i cheched the front turbo. no shaft play. acualy looks like they have been replaced recently. still has the fluro green paint on one of the blades. :D

havent been able to inspect the rear one yet. due to its flamin mongrely position.

it has no air leaks or exhaust leaks. does not seem to have any performance diferance at all(no extra lag or power diff)

any feedback would be good.

has this happend to anyone after a hard drive?

hopfully il not just add this one to the list of "normal" noises.

Edited by T04GTR
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T04GTR Grand Master

T04GTR

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ok. ive made some progress.

the noise started about half a day after i fitted a hks front pipe. maybe i had the radio cranked the whole time after i put it on so i didnt notice it.

but i got rid of the noise. by fitting a cat :P

it had one of those pipes on it(i know its ilegal but does good flames)

must of been turbine noise coming through the thin stainless pipe!

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