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Thread: Skyline GTR R32 / Problem Boost control Gready Profec-B HELP !

  1. #1
    GTRCer
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    Apr 2011
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    Québec
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    Exhaust Sputter, Skyline GTR R32 (Resolved)

    Before start, little information about my car :

    I have Skyline GTR R32 1991 with RB26DETT engine. The engine is forged with Nismo piston and ring, i have a new fuel pomp, Nismo thermostat, intake piping HKS, exhaust 3.5 po, big intercooler... My engine have 15 000 KM and he run very well at the stock configuration with the stock PSI.

    I run with a TurboXs Manuel boost controller. https://www.turboxs.com/shop/product.php?id_product=137

    My problem is, after i used my boost controller to have more PSI, when i push the gaz pedal at maximum for obtain the max acceleration, the engine make an unstable boost and i hear a sputter in my exhaust. This problem happen half the time. Sometimes everything is okay.

    I will just change my piping collar because i thought i had a boost lost in my piping.

    Idea for the source of my problem :

    -Problem with the boost controller (no)
    -Boost loss in the piping of the boost controller (no)
    -Coils pack, i think all look good (no)
    -Bad connection with my boost controller (no)
    -Spark Plug Gap (yes) need to set the gap at 0.8 and all work fine!


    Thanks for your help!!!

    If you have any question you are welcome!
    Last edited by Mikepage; 05-17-2011 at 01:28 AM.

  2. #2
    GTRCer
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    if it is an rb26 with twins on it you have to change the vacumme lines because they use manifold pressure and on a boost controller you dont want that. simply run the two turbo actuators to a t and run that to your "in" and run your "out" to the aac. Then plug all old lines under the intake plenum that come from the turbo hard lines

  3. #3
    GTRCer
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    Yes, i have the RB26dett R34 Engine with the stock turbo.

    I just remove my Gready BC and put a TurboXs MBC to make a test and i obtain the same problem when i upgrade my boost. But, if i put the BC off, all run good same as the Gready. I am so discouraged about this problem.

    I'll check my connexion as you say because i think you maybe have the solution.

    I will just inform you soon thx!

    Quote Originally Posted by derbeck View Post
    if it is an rb26 with twins on it you have to change the vacumme lines because they use manifold pressure and on a boost controller you dont want that. simply run the two turbo actuators to a t and run that to your "in" and run your "out" to the aac. Then plug all old lines under the intake plenum that come from the turbo hard lines

  4. #4
    GTRCer
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    Problem Resolved, Spark Plug Gap need to set at 0.8 and all work fine. Thanks guy!
    Last edited by Mikepage; 05-17-2011 at 01:26 AM.

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