[h] noise under boost - like supercharger
#1
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Thread Starter
Join Date: Mar 2008
Location: 925 CO/PH/WC
Posts: 999
Car Info: 05 cgm imp
[h] noise under boost - like supercharger
so yesterday, in the rain, as i stepped on the gas i noticed a noise i've never heard before. i searched in the forums but no answer.
it happens under full boost, instead of hearing my turbo spool through the intake, i hear another noise, like a supercharger whine. scoo_b heard it in my car, he wasnt sure what it is.
i got k&n sri, tbe w/ silencer put on.
maybe a leak on the dp/turbo, the nuts tend to get loose there, i will look in to the when its not raining.
help will be appreciated, thanks.
it happens under full boost, instead of hearing my turbo spool through the intake, i hear another noise, like a supercharger whine. scoo_b heard it in my car, he wasnt sure what it is.
i got k&n sri, tbe w/ silencer put on.
maybe a leak on the dp/turbo, the nuts tend to get loose there, i will look in to the when its not raining.
help will be appreciated, thanks.
#5
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Join Date: Jun 2007
Location: Arnold, CA
Posts: 9,171
Car Info: 2003 PSM WRX, 80 Brat ready for Chevy 350 Swap.
you did not state in the OP that it varies the boost.
the reason you would hear it under full boost is cause you motor is under load. belts become under load at the simultaneously. cause your PS to make the "Supercharger Whine"
the reason you would hear it under full boost is cause you motor is under load. belts become under load at the simultaneously. cause your PS to make the "Supercharger Whine"
#6
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Join Date: Jul 2008
Location: 925+415
Posts: 1,347
Car Info: 05 CGM STi to be converted to RS
is this urgent or can i wait until action needs to be taken.
#8
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Join Date: Jul 2008
Location: 925+415
Posts: 1,347
Car Info: 05 CGM STi to be converted to RS
check the bolts on the dp/turbo and they're on there.
my o2 bung tends to get loose because crucial didnt send me the right one, tightened.
so the sound is still there, happens near 5k rpm, does not vary with rpm but with boost.
my o2 bung tends to get loose because crucial didnt send me the right one, tightened.
so the sound is still there, happens near 5k rpm, does not vary with rpm but with boost.
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