Welcome to the North American Subaru Impreza Owners Club Tuesday April 13, 2021
Home Forums Images WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Go Back   NASIOC > NASIOC Technical > Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo)

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.







* As an Amazon Associate I earn from qualifying purchases. 
* Registered users of the site do not see these ads. 
Reply
 
Thread Tools Display Modes
Old 08-18-2006, 09:29 AM   #1
trickniner
Scooby Newbie
 
Member#: 103255
Join Date: Dec 2005
Chapter/Region: NESIC
Location: Southwest CT
Vehicle:
2007 Legacy GT

Default Possible Boost Leak - Location?

My Car is a 2002 WRX as far as engine mods it has a Perrin Upipe, TurboXS TBE with High-Flow Cat, K&N Typhoon Intake. All where installed professionally before I bought the car. It had GFB Hybrid BOV on when I bought it but I removed it and replaced with the stock BPV.

Now the problem is that my car is making a whining noise similar to a supercharger. It is most noticeable under slow to medium acceleration. The whining comes on just as the boost is building and goes away around 0 Ė 5 psi, although I think it really just the noise of the turbo drowning it out.

The only thing Iím confused about is if itís a boost leak I would think I shouldnít be hitting target boost but under hard acceleration it doesnít seem to be a problem. It has some fall off in the higher rpms but I think thatís also been due to the hotter weather we had been having a couple weeks ago.

Iíve searched but canít seem to find anything that would help me figure out where to even start looking. The only thing I could think of is that when I replaced the stock BPV I should have replaced the gasket as well. Iím going to pick one up and see if that helps, if not Iím kind of at a loss.
* Registered users of the site do not see these ads.
trickniner is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 08-18-2006, 09:33 AM   #2
Assassin4457
Scooby Specialist
 
Member#: 96773
Join Date: Sep 2005
Chapter/Region: E. Canada
Location: GTA, Ontario Canada.
Vehicle:
04 WRX, RIP GC8
Black

Default

That gasket might be it. Im not a pro or anything , but a small enough boost leak probably wont affect your peak / target boost that much. I think it all depends how large of a leak it is and where it is actually happening.

Sorry to not be of much help, but Its hard to diagnose these things for me without seeing the car.
Assassin4457 is offline   Reply With Quote
Old 08-18-2006, 09:47 AM   #3
trickniner
Scooby Newbie
 
Member#: 103255
Join Date: Dec 2005
Chapter/Region: NESIC
Location: Southwest CT
Vehicle:
2007 Legacy GT

Default

It would be tough even if you where able to look at the car. I've tried multiple times to figure out where ti could be by popping the hood and listening while someone revs the car. I can't hear anything over the noise the rest ofthe engine makes. I think it might be that the engine has to be under load as well which makes it that much harder to locate if it is a leak.
trickniner is offline   Reply With Quote
Old 08-18-2006, 09:54 AM   #4
Assassin4457
Scooby Specialist
 
Member#: 96773
Join Date: Sep 2005
Chapter/Region: E. Canada
Location: GTA, Ontario Canada.
Vehicle:
04 WRX, RIP GC8
Black

Default

That would make more sense. Im sure theres more noise under load rather than just free reving it.

Anyone else wanna hop in and try to figure this out ? Im just trying to think what else could make a whining noise like that.
Assassin4457 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Possible vaccum leak locations?? shaggy-with scoobi Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) 12 05-08-2010 08:00 PM
Possible boost leak on my 05 STI? 2005wrbluesti Factory 2.5L Turbo Powertrain (EJ Series Factory 2.5L Turbo) 8 12-31-2006 02:36 PM
New intercooler and possible boost leak.....please help purduephigam Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) 16 05-20-2006 07:55 PM
Possible Boost Leak? KmanRuffian Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) 0 11-07-2005 05:46 PM
stage 4 vf22 engine cutting out... possible boost leak? UTEC log inside. knertified Engine Management & Tuning 6 11-29-2004 10:17 AM

All times are GMT -4. The time now is 07:36 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2021 Axivo Inc.
Copyright ©1999 - 2019, North American Subaru Impreza Owners Club, Inc.

As an Amazon Associate I earn from qualifying purchases.