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Old 10-08-2012, 12:14 PM   #1
zashoe
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Member#: 329523
Join Date: Aug 2012
Chapter/Region: MAIC
Location: Hagerstown, MD
Vehicle:
2002 Impreza WRX
World Rally Blue

Default Boost Issue

2002 WRX. just replaced turbo <1k miles ago. I THINK I'm having compressor surge. I boost fine at ~18psi until 4k rpm. then boost drops to 9psi and rebuilds to 15-17psi by redline. I'm not sure whether it's compressor surge, waste gate issue, boost leak somewhere, etc. I thought it was the stock bov. tries turboxs hybrid to no avail. the car has roughly 134k miles. I data logged if it will help anyone to view the results.
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Old 10-08-2012, 01:16 PM   #2
wrxlaunch
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Join Date: May 2008
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Location: MD
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99 SF

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Kinda turbo did u replace with and what was on there before? Have u checked for leaks?
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Old 10-08-2012, 05:47 PM   #3
zashoe
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Join Date: Aug 2012
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World Rally Blue

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just stuck with a td04. I can't find and obvious leaks. not to say it's impossible..
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Old 10-08-2012, 05:53 PM   #4
tebriel
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2004 JBP WRX

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that's gotta be a wastegate issue.
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Old 10-08-2012, 08:54 PM   #5
zashoe
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World Rally Blue

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I'm not sure how to tell if it's waste gate. I datalogged so I'll take a look when I get home from class and see if I can make sense of it.
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Old 10-09-2012, 08:28 PM   #6
kgrander
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wastegate.
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Old 10-09-2012, 11:49 PM   #7
zashoe
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2002 Impreza WRX
World Rally Blue

Default

it turned out to be launch control! it was interfering with the BCS!
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