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Evo 8 turbo very LOUD

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Old Jun 10, 2010 | 06:12 AM
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Evo 8 turbo very LOUD

The car is stock right now, but I had my windows down for the first time and after hitting boost, the turbo is ridiculously loud... is this normal?

I also noticed that my plx is reading extremely rich when at WOT. is this an issue?
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Old Jun 10, 2010 | 06:16 AM
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From: Secret Tweaker Pad
Sounds like a boost leak.
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Old Jun 10, 2010 | 07:25 AM
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From: ma
How much boost? Whats the afr?
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Old Jun 10, 2010 | 07:28 AM
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I don't have a boost gauge installed yet, so i don't know, but it hasn't been touched yet. AFR is digital, and is to quick to tell, but it gets up to 10. something, then digital readout reads "rich"
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Old Jun 10, 2010 | 07:58 AM
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From: ma
Well we need to know this before we can give you an answer. High 10's isnt that rich depending on wat oct gas and what the boost is, also if your running high boost then hearing the turbo isnt abnormal. Also with a small turbo you will hear the turbo more when half throttle and 10lbs verse wot an 25lbs., if you have a exhaust.
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Old Jun 10, 2010 | 08:11 AM
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Maybe Im just freaking out over nothing? :-/

I had an intercooler hose blow off on me a few days ago and ever since then I have been paranoid! Maybe I should make a video?
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Old Jun 10, 2010 | 08:14 AM
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my stock evo 8 turbo is louder then my friends 30r running 20 psi on a vw jetta if that makes u feel any better
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Old Jun 10, 2010 | 08:15 AM
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You probible do have a boost leak.
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Old Jun 10, 2010 | 08:16 AM
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Originally Posted by sktng22
my stock evo 8 turbo is louder then my friends 30r running 20 psi on a vw jetta if that makes u feel any better



I dont know about this
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Old Jun 10, 2010 | 08:22 AM
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From: ma
Thats because the turbo in a jetta is behind the motor, you probably here the turbo more through the exhaust than from the engine bay.

But you have to get a boost gauge and see how much your pushing, what gas are you using? if its anything under 93oct high 10's is fine.
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Old Jun 10, 2010 | 08:24 AM
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From: Secret Tweaker Pad
Originally Posted by SgtSeanzie
Maybe Im just freaking out over nothing? :-/

I had an intercooler hose blow off on me a few days ago and ever since then I have been paranoid! Maybe I should make a video?
Exactly......do a boost leak test. The coupling that blew off is probably leaking making it sound like the turbo is really loud, when in reality, its air coming out of the coupling.
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Old Jun 10, 2010 | 08:24 AM
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Yeah, Im running 93 octane. They add 10% ethanol in the gas where I live.
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Old Jun 10, 2010 | 08:30 AM
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From: ma
Get a log or something, need to see whats the afr is at what psi vs the rpm to tell if your running rich. But ya do a boost leak test, I think more than anything your making a problem where there isnt one.
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Old Jun 10, 2010 | 08:44 AM
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Originally Posted by 3gEclipseTurbo
Get a log or something, need to see whats the afr is at what psi vs the rpm to tell if your running rich. But ya do a boost leak test, I think more than anything your making a problem where there isnt one.
ill see what I can do, but I have a PLX wideband, and Im not sure if it logs or not.
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Old Jun 10, 2010 | 08:52 AM
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From: ma
Im talking bout a evoscan log
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