Low boost
Results 1 to 6 of 6

This is a discussion on Low boost within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; I was chasing this problem a year ago and gave up. I used to feel a big pull at 3200+ ...

  1. #1
    Registered User
    Join Date
    Mar 2010
    Posts
    23

    Low boost

    I was chasing this problem a year ago and gave up. I used to feel a big pull at 3200+ rpm but it slowly went away. at first it was intermittent, and through the boost curve i could feel it drop off sporadically almost as if it were missing but nothing indicates a misfire, no codes or anything. It still seems pretty powerful for a 2.0 so I'm pretty sure the turbo is working fine. I had the intake apart and checked the hoses, didn't find any cracks or anything. I did find a crack in the vacuum line that goes from the intake to the wastegate solenoid and excitedly replace all the vacuum lines in that system making sure to keep the restriction bead where it goes, but it didnt fix the problem. I know there's pressure in the system because I loosened the BOV bolts to see if there was a power drop and could hear the air being forced through the loosened fitting. I dont have any other way to check the pressure. any suggestions? could the BOV be stuck open?

  2. Remove Advertisements
    ClubWRX.net
    Advertisements
     

  3. #2
    Registered User
    Join Date
    Mar 2010
    Posts
    23
    The BOV is stock with the hose feeding back int the intake. as is everything else.

  4. #3
    Registered User MainFrame's Avatar
    Join Date
    Sep 2002
    Location
    Texas, United States
    Posts
    7,581
    I Support ClubWRX
    Maybe try doing a boost leak test with an air compressor, I know I've uncovered leaks I never knew were there.



    Also a datalog, or even look at learning view would be helpful.

  5. #4
    Luke Skywalker Mikie13's Avatar
    Join Date
    Oct 2006
    Location
    Palmyra, NJ
    Posts
    20,328
    ^that.
    The Hawk-Eye Alliance #90|The Blobeye Syndicate #0|The Stink-Eye Mob #0|N.E.R.D. Founding Member & #3
    2012 Lightning Red WRX Sedan Stock...for now Soon to be OpenSource tuned by: Mattypants @ WTF Tuning
    "If I have 10 ice cubes and you have 11 giraffes, how many pancakes can fit on the roof? Purple, because aliens donít wear hats" -Ying

  6. #5
    Registered User
    Join Date
    Mar 2010
    Posts
    23
    Is there an easy way to block the system and add a fitting?

  7. #6
    Registered User MainFrame's Avatar
    Join Date
    Sep 2002
    Location
    Texas, United States
    Posts
    7,581
    I Support ClubWRX
    Something like this Boost Leak Testers can be made pretty cheap. All you need is a valve stem, PVC cap, silicon coupler, hose clamp, and some JB Weld. Disconnect the PCV fittings and plug them up, along with anything else you're not trying to test..

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •