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LaserSpeed666

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Discussion starter · #1 ·
So when my turbo boost's instead of hearing that turbo spool up noise all you hear is an air rushing noise, i actually have never heard my turbo spool up on this car. It's just that air rushing noise. I have hard upper intercooler pipping, 3inch intake with K&N. My spool takes forever aswell, but people who hear my car going down the track say. "It doesn't even sound like a car, all you hear is like a vaccum cleaner" lol. i have NO boost leaks, and i'm only running 10psi. I owned a 90 talon with a 16g and that spool was loud, i also owned a stock 1991 fwd talon with a 14b that would spool pretty loud. This one however nothing. Any reason why?
 
My GSX sounds like a vacuum cleaner as well, but that's due to the rather large boost leak in my intercooler.

Adding the K&N filter to mine and hacking the airbox really did add to the wooshing air rush sound in mine, though.
 
Boost leak.. My galant had some boost leaks as well (it sounded like a damn jet, literally).. People said it was loud as hell, although it was slow as piss..
 
Discussion starter · #7 ·
No i've checked, i pressurized my lowerintercooler pipe all the way into the engine. You cannot hear any leaks and i soaked the hole thing with soapy water and there at no bubbles, i just rebuilt my tb with new shaft seals, i also replaced my injector seals. The wastegate flapper arm is attached, and when i took it off the flapper the flapper moved freely and the arm was very hard to move. Blown turbo? BOV does not leak under boost, it's a stock 1g bov.
 
Lower intercooler pipe?

You're supposed to pressurize it through the intake on the turbo or on the compressor housing.. Id re-test it from there and see what you get.. Also how many lbs did you pressurize it to?
 
Discussion starter · #12 ·
If you pressurize it from the turbo inlet all the air will go into the engine because there is no oil in the seals to block the air. I took my lower intercooler pipe off my turbo and attached my tester to that pipe. I ran 17psi of air into it.
 
LaserSpeed666 said:
If you pressurize it from the turbo inlet all the air will go into the engine because there is no oil in the seals to block the air. I took my lower intercooler pipe off my turbo and attached my tester to that pipe. I ran 17psi of air into it.
I always test mine from the turbo inlet and never have any issues with this at all...Try it from the inlet.
 
Yesterday I finally took my intercooler off, and the whole upper pipe was corroded to hell. There were probably 10 or so holes between 1 and 2mm in size and lots of pits. I have a spare intercooler on my busted Talon, but I can't get to it until the weekend at best as it's at a garage a half hour away. I just slathered the whole tube with JB Weld and let it set up overnight. I put it back on today, reconnected everything, and now my car no longer sounds like a vacuum cleaner. The only thing I hear now is the spooling of the turbo.
 
Discussion starter · #15 ·
^^ okay thanks?

Guys, i'm not an idiot. I have boost leak checked my car, i know how to do it and i know there is no leaks. Like yours ^^ the top part of my intercooler was corrorded to hell aswell and i did the excate same thing, then pressure tested my intercooler just by it'sself and it didn't leak any air. (held 15psi for 20 minutes) Like i said however if i test from the turbo inlet all the air bleeds off into the turbos oil seals. and "Oldman" On this website agrees to start testing on the lower intercooler pipe.

Also though, i noticed today that if i have the car at like 50-70% throttle i can hear the turbo spool and the turbo wistle.
 
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