Is my turbo shot?

Discussion in 'Modifications And Maintenance' started by Ej22TIM, Oct 11, 2007.

  1. Ej22TIM
    Offline

    Ej22TIM Well-Known Member

    Messages:
    2,123
    Likes Received:
    29
    Trophy Points:
    133
    Location:
    MNSubaru B-Series Member #713
    I currently have a MBC on my T-leg and with the controller turned all the way up, a cant run more than 7-8 psi. i even tried disconnecting the mbc to see if the turbo would just spool to the moon, with the same result, nothing over 8psi.
    the car has 145k on it, just put a dp on it and it has very little shaft play (vf-11) so uhhhhhh is my turbo shot?
     
    Ej22TIM, Oct 11, 2007
    #1
  2. shineynitelite
    Offline

    shineynitelite Well-Known Member

    Messages:
    1,315
    Likes Received:
    1
    Trophy Points:
    121
    Location:
    st. paul
    wg pressure
     
    shineynitelite, Oct 12, 2007
    #2
  3. Scuba Steve
    Offline

    Scuba Steve Well-Known Member

    Messages:
    9,517
    Likes Received:
    4
    Trophy Points:
    173
    Location:
    In the Co-Driver Seat
    Yeah, sounds like your running wastegate only. I'd first trace your hoses and make sure you have the proper routing.
     
    Scuba Steve, Oct 12, 2007
    #3
  4. Deride
    Offline

    Deride Well-Known Member

    Messages:
    2,887
    Likes Received:
    120
    Trophy Points:
    248
    Gender:
    Male
    I hope you have an intercooler on that thing, I wouldn't mess with a MBC without intercooling the beast.
     
    Deride, Oct 12, 2007
    #4
  5. AWDimprezaL
    Offline

    AWDimprezaL has more posts than you

    Messages:
    16,476
    Likes Received:
    1,818
    Trophy Points:
    573
    Gender:
    Male
    Location:
    Monticello.
    he is intercooled yes.
     
    AWDimprezaL, Oct 12, 2007
    #5
  6. Threshld1
    Offline

    Threshld1 Well-Known Member

    Messages:
    1,531
    Likes Received:
    93
    Trophy Points:
    233
    Location:
    SLP
    Wastegate pressure on the VF-11 should be 5 psi, 8.9psi is the peak stock setting. I would check the spring in the MBC to make sure its holding pressure. Though there isnt much more to get out of the VF-11 much past 10-11psi, any more and your blowing hot air and banging off the fuel cut.
     
    Threshld1, Oct 12, 2007
    #6