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Thread: Turbo Sounds

  
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    Turbo Sounds

    Does anyone else with veccy c + k+n panel filter have a turbo whistle when driving. Its hard to explain the sound but if driving around 2.5k-3k with foot resting on the peddle it sounds like the whistle on a kettle.
    Messing about with the car today I could hear the same noise over the top of the engine when i was at 5k+

    Is this a normal sound with those mods, sure i never noticed it before i did them, dump valve also seems to be fairly audible, which it wasn't when i first got the car. Have got a VXR turbo but running standard map.

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    redmist's Avatar
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    Sounds like the dump valve is sticking to me!
    Mine does it on the motorway just a little bit o throttle to keep up at 70 - 80 ish and I can hear the whistle I reckon it must be dumping slightly or sommat.
    I'm desperate to get rid of my dump valve but I lost my standard spring! doh.
    Astra Coupe Turbo
    CS1: 243 BHP 257 lb/Ft Torque


    Check Out Redmist's Story!

  3. #3
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    But it dumps perfectly when coming off the throttle, albeit a little louder than it used it.

    Gonna sound a dumb ass here but where on the turbo is the dump valve?

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    Clemo SXi's Avatar
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    dump valve is seperate, you sure you got one? or is it just the standard waste gate?
    I'm after another Coupe Turbo

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    Standard DV/WG, its part of the turbo iirc, not a seperate part.

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    paddy ross's Avatar
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    i have had to replace mine for the same thing it started to whistle all the time and eating oil like it was going out of fashion also not an expert but they reckon you should have the ecu done because the vxr turbo produces more boost anyway

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    DEANY1's Avatar
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    how u doing mate' its james with the black coupe, im useing my bro's sign on. are you about at the weekend i can have a look if u like

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    lee gsi's Avatar
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    Mine does it too.

    Its just the sound of the turbo spinning up
    The truth is always the truth even if you haven't realised it yet...

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    Quote Originally Posted by DEANY1 View Post
    how u doing mate' its james with the black coupe, im useing my bro's sign on. are you about at the weekend i can have a look if u like
    Yeah i'll be about, cheers. Your bro got a car yet?

    I don't think it is the turbo spinning up Lee, because there a constant whistle when just driving at 2.5k-3k, the turbo would be running at a steady speed.

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    nope he bought a calibra as a run around for the mo,lol
    i had the same sort of sound but it was constant,I found it out to be a breather hose with a 1-way valve in. the 1-way valve had split and was letting pressure out causing the noise. a very well known tuner told me my turbo was makeing the noise and that the turbo bearings were on there way out even thou it was a new vxr turbo. now new valve fitted and all is quiet in the engine bay

    ill drop u a txt at the weekend bud
    astra sri 2.0 turbo xp sports hatch

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