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Thread: Strange boost problem

  
  1. #1
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    barrog's Avatar
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    Strange boost problem

    Hi guys
    A little while noticed a strange noise coming from my car when I come onto boost. Its like a squeeling noise. Other than that the car seems fine.

    I fitted a boost gauge the other day and saw that when it makes this noise it is boosting to 20psi sometimes slightly over! It then holds about 14. Im running a stage 1 map. It only does it if i put my foot flat to the floor in 2nd or 3rd from about 2000rpm and let the boost come in. If it is any higher say 3000rpm it will overboost normally to about 17 psi and then hold 14 fine which is how I would expect it to be all the time

    Is there any reason it would be boosting this high. I was thinking maybe actuator? Its a zlet turbo, vxr manifold and vxr actuator lol. Ive set up the acutator as shown on here i.e. close it, tighten nut till it hold in position and give it one more.

    Can anybody help?

    Thanks!!

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    BMAstra's Avatar
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    What map do you have on the car ?

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    barrog's Avatar
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    its a map i flashed onto the car.
    I dont think it has anything to do with it though because ive had it for about 5 months and it has been fine and has only been making this noise for a month or so.
    I replaced my manifold because it was cracked and actuator about 2 months ago and it was fine for a while so maybe this may have something to do with it?

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    BurrTony's Avatar
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    It sounds like you have boost leaking past a hose clamp somewhere.

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