Is my turbo shot?

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

  1. Ej22TIM
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    Ej22TIM Well-Known Member

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    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
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  2. shineynitelite
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    shineynitelite Well-Known Member

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    wg pressure
     
    shineynitelite, Oct 12, 2007
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  3. Scuba Steve
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    Scuba Steve Well-Known Member

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    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
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  4. Deride
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    Deride Well-Known Member

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    I hope you have an intercooler on that thing, I wouldn't mess with a MBC without intercooling the beast.
     
    Deride, Oct 12, 2007
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  5. AWDimprezaL
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    AWDimprezaL has more posts than you

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    he is intercooled yes.
     
    AWDimprezaL, Oct 12, 2007
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  6. Threshld1
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    Threshld1 Well-Known Member

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    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
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