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  • low boost pressure

    I have installed a t4/t3 turbo, t4 intake side and a stock t3 exhust side, big sperco intercooler, 2 1/2 intercooler piping. I can only make 14 lbs boost. I was thinking its a bad electric boost controller. I pulled off the vacuum line going to the turbo boost controller on the turbo, still 14 lbs boost. its a modified stock t-3 turbo, maby thats all I get ???.

  • #2
    still internally gated?

    Terrible idea putting those wheels on...

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    • #3
      It's probably the wastegate actuator.
      Elitist Prick Black Z owner.
      1986 300zx Turbo
      2011 Ford F150 Super Crew 4x2 EcoBOOST
      1985 Toyota 4Runner, locked, lifted, geared, uglied.

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      • #4
        sounds to me like your wastegate is stuck open or partially open
        Funny stories!

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        • #5
          LOW BOOST

          I WILL CHECK THE BOOST ACTUATOR TONIGHT, I CAN SEE THE ROD HAS BEEN MADE LONGER, MABY WHEN THE ROD WAS WELDED ON TO MAKE IT LONGER IT WEAKEND THE SPRING. BUT I DONT THINK IT MATTERS IF I HAVE THE VACCUM LINE OFF.

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          • #6
            LOW BOOST

            I JUST LOOKED AT THE STOCK T-3, THE ACTUATOR ROD HAS APX 1/4 INCH OF COMPRESSION ON THE WAST GATE HOLDING PRESSURE TO KEEP IT CLOSED. MAY NEW SET UP HAS NO EXTRA FORCE ON THE VALVE. I CAN SLIP THE ACTUATOR ROD ON AND OFF OF THE WASTE GATE WITH EASE, UNLIKE THE STOCK ON, HAVING TO PUSH THE ROD IN APX 14 INCH TO HOLD TENSION ON THE WASTE GATE.

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            • #7
              WELL I GUESS YOU FOUND YOUR PROBLEM THEN!
              Funny stories!

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              • #8
                LOW BOOST

                I HOPE SO, I WILL CHECK TONIGHT

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                • #9
                  QUIT YELLING AT EACH OTHER!!!!






























                  :lol: :lol: :lol: :lol: :lol:

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                  • #10
                    BROKEN KEYBOARDS SUCK

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                    • #11
                      HEY GUYS WHAT'S GOIN ON IN THIS THREAD?

                      I SEE WE ALL HAVE ON THE CRUISE CONTROL FOR COOL!

                      WOO!
                      Civilize the mind but make savage the body.

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                      • #12
                        You dont hav that stupid pop off valve on do you?u may also have a boost leak after the throttlebody somewhere,hav a look at those two things.
                        Straya, +61

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                        • #13
                          LOUD............. NOISES!!!!!!!
                          86 hardtop shell, 93 SC300 engine, 95 soarer bellhousing, 91 supra transmission, 95 Q45 differential hubs and driver's side axle, 1992 300ZX turbo driver side axle and calipers, 2004 350Z Rotors, 87 300ZX front end/hood, 1999 Viper radiator, 1992 Mustang throttle body. Lots of glue and tape to keep it all together.

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