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A3 Turbo noise

Discussion in 'A3/S3 Forum (8L Chassis)' started by JB_A3_Turbo, Dec 21, 2005.

  1. JB_A3_Turbo
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    JB_A3_Turbo Member

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    I've recently bought a 1999 A3 Turbo- so a bit new to it all!!. Usually you can hear the turbo winding up at about 2,000rpm. On some days it's more noticible than others, this morning I couldn't really hear it- no noticible loss of power though, could it just be that it is quite and depending on differences in road noise you might not always hear it? I would imagine if it wasn't working I would really notice a difference?

    Jon.
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  2. HTC
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    HTC Active Member

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    You are most likely to hear the noise in streets where the sound can bounce back, or the window open on a smooth surface.

    Before my car was remapped I found it hard pushed to hear the turbo at any time.

    If its not down on power, then I wouldn't worry.
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  3. JB_A3_Turbo
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    JB_A3_Turbo Member

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    Thanks, Me probably being ignorrant but why is the turbo now louder after a remap?

    Even with the windows up you could normally hear it whisling.

    I'll keep an eye on it though- I have 1 1/2 months left on the warranty cover (came with the car when I bought it)- this covers stuff like the turbo just in case!
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  4. HTC
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    HTC Active Member

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    Whistles more after the remap because it now spins faster whilst pushing more air.

    Think of a normal house fan. The faster you run it the louder it gets.

    Interestingly, you can hear the turbo a little more on my 2001 AUM egined golf. I put this down to it having the later revised turbo fitted.

    As long as the sound isn't a hissing like when you let a car tyre down or a grinding, then it'll be fine.
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  5. JB_A3_Turbo
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    JB_A3_Turbo Member

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    thanks for your help!

    No hissing or grinding yet- touch wood!!
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  6. On my Golf mkIV 1.8T the turbo was much louder compared to my S3 (and presumably A3).

    Since the remap the turbo is louder - I love it.

    If you can't hear it at all there might be a problem. But if the turbo wasn't working you would know because it the lack of power would be very noticeable.
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  7. JamS3
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    JamS3 Active Member

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    Was the road wet? If so the extra noise from your wheels on the road sometimes is just enough to mask the noise compared to a dry road!!
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  8. JB_A3_Turbo
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    JB_A3_Turbo Member

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    The roads have been bit greasy and wet so this may be a factor in masking the turbo noise. I'm going to keep an eye on it.

    Should the turbo spin up even if the car is stationary e.g if I rev it up on the drive to 2000rpm+ should I hear the turbo spin up?
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  9. JamS3
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    JamS3 Active Member

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    You should not hear it that much by revving it....especially only to 2k rpm rev it to about 4.5 - 5k and you should be able to hear it, it's more noticible under load ie when you are driving it.
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  10. mattyboy199
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    mattyboy199 Active Member

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    I also noticed that a golf GTI turbo (150) has a much louder turbo noise than the S3 not that i m bothered i know what i would rather have, just thought i would mention it. I find with the windows closed radio & climate off you can hear the hear the re-circulation & waste gate release when releasing the throttle.

    I would of thought if theres a possible problem with the turbo a RR will verify this. Probably cheaper than getting an Audi dealer to look over it.
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  11. JB_A3_Turbo
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    JB_A3_Turbo Member

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    Drove it home tonight, turbo whistle was there- it is fairly quiet but the power has definitely not been lost (overtaking was nice and easy ;-) )

    Sorry what do you mean by "an RR will verify this"?

    Thanks.
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  12. imported_VaulterTim
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    imported_VaulterTim Guest

    Rolling Road... you'll get a readout of performance (Power & Torque) which can indicate any potential problems when read correctly.
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  13. JB_A3_Turbo
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    JB_A3_Turbo Member

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    ok thanks..
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  14. benk
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    benk Member

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    Out of interest, what colour is your car?
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  15. JB_A3_Turbo
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    JB_A3_Turbo Member

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    dark blue metallic.
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  16. benk
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    benk Member

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    Just wondered, as I sold my 99 1.8T about 3 months ago. /ubbthreads/images/graemlins/smile.gif
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