stock boost on WRX?

Discussion in 'Modifications & DIY how-to' started by mckenzietj, Feb 21, 2007.

  1. mckenzietj

    mckenzietj Member

    Joined:
    Jul 8, 2005
    Messages:
    175
    Likes Received:
    2
    I am in the process of putting some stuff back to stock for this week ends mods. One thing is the stock boost solenoid and hoses. I've had the TXS controller so long I lost the stock hoses and restrictor. Today I put in a line from the solenoid to a .040" restictor, then a "T" that goes to the turbo outlet and the wastegate. The car feels like it has the same power as other stockers (there are a few I see at work regularly) but it only hits about 9 psi. I do have an STi top mount, could that be the cause of the loss, or are my hoses and restrictor plumbed incorrectly? It's been a long time since I took them off.
     
    #1 mckenzietj, Feb 21, 2007
  2. kevingroover

    kevingroover Member

    Joined:
    Nov 18, 2004
    Messages:
    58
    Likes Received:
    0
    sounds wrong
     
    #2 kevingroover, Feb 21, 2007
  3. Deke

    Deke Active Member

    Joined:
    Jan 28, 2006
    Messages:
    2,694
    Likes Received:
    0
    Well stock I'm pretty sure they only hit 9-10 psi in 1st and 2nd. But I think it's more like 12-14 in the other gears.
     
    #3 Deke, Feb 21, 2007
  4. Maniacurabus06

    Maniacurabus06 Member

    Joined:
    Mar 19, 2006
    Messages:
    397
    Likes Received:
    0
    sorry to change the subject but whats the PSI that a stg 2 shpuld hit in 1st?
     
    #4 Maniacurabus06, Feb 21, 2007
  5. goixiz

    goixiz Active Member

    Joined:
    Oct 23, 2005
    Messages:
    1,482
    Likes Received:
    0
    turbo outlet - restrictor - "T"

    T (straight leg) to WG actuator
    T (branch leg) to Boost solenoid -- Intake hose for turbo (this hose is larger)
     
    #5 goixiz, Feb 21, 2007
  6. mckenzietj

    mckenzietj Member

    Joined:
    Jul 8, 2005
    Messages:
    175
    Likes Received:
    2
    Thank you goixiz. So I got the T and restrictor reversed. I'll retest it in the morning.
     
    #6 mckenzietj, Feb 21, 2007
  7. GTscoob

    GTscoob Black is Beautiful

    Joined:
    Jul 30, 2004
    Messages:
    4,813
    Likes Received:
    1
    Should be around 14psi.
     
    #7 GTscoob, Feb 21, 2007
  8. goixiz

    goixiz Active Member

    Joined:
    Oct 23, 2005
    Messages:
    1,482
    Likes Received:
    0
    welcome
    what you did was restrict the bleed line to the BCS therefore all(almost all) your flow is to the WG actuator opening the WG - hence WG boost
     
    #8 goixiz, Feb 21, 2007
  9. kingwrex

    kingwrex
    Supporting Member

    Joined:
    Feb 12, 2006
    Messages:
    1,195
    Likes Received:
    11
    stock is 13.5 psi i thought?
     
    #9 kingwrex, Feb 21, 2007
  10. mckenzietj

    mckenzietj Member

    Joined:
    Jul 8, 2005
    Messages:
    175
    Likes Received:
    2
    I wasn't thinking of how it works, just how I remembered it being. Memory is the first thing to go when you get old I guess.
     
    #10 mckenzietj, Feb 21, 2007
  11. goixiz

    goixiz Active Member

    Joined:
    Oct 23, 2005
    Messages:
    1,482
    Likes Received:
    0
    the gas pedal is on the right (that all you need to remember) :)
     
    #11 goixiz, Feb 21, 2007
  12. Maniacurabus06

    Maniacurabus06 Member

    Joined:
    Mar 19, 2006
    Messages:
    397
    Likes Received:
    0
    so how much boost should a stg 2 hit in 1st? WOT?
     
    #12 Maniacurabus06, Feb 22, 2007
(You must log in or sign up to post here.)

Share This Page