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Another 1KZTE Boost Question!

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  • Another 1KZTE Boost Question!

    Hi guys,
    had a bit of a search, but couldn't find an answer to my question - found a lot of other 1KZTE boost threads though!

    I've got an '05 120 GXL with the 1KZTE engine and have recently fitted a 2.75" exhaust with a Advance Headers dump as I'm chasing a bit more mid range grunt. I know these things are no rocket ship & the exhaust has definitely made a difference. I got the exhaust bloke to fit a EGT gauge probe at the same time (post turbo). On the weekend I fitted the EGT gauge & boost gauge & took it for a spin up the highway. Boost seems to peak at around 10psi & the EGT sits at around 375 deg C at a steady speed. I was surprised at how high the boost sits at 110kph - 9psi on flat ground with just me in the car. Is this normal?

  • #2
    Yep, thats normal.... well it is in mine anyway (2004vx)
    i added a manual boost controller and wound the boost up to 14psi.. i also have a DP chip set on 5 and havent had any issues
    The only difference is i have a 3" dump not a 2.75"

    Comment


    • #3
      Thanks mate, good to know it's normal. I've also since fitted a manual boost controller & boost is now about 13.5psi. Haven't got a chip so without adding extra fuel the extra boost only made a slight difference.

      Comment


      • #4
        With a late model engine like yours you have an electronic spill valve anyway which will adjust for the added boost, slightly.

        Comment

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