A3 Turbo noise

[JB_A3_Turbo]

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.

 

[HTC]

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.

 

[JB_A3_Turbo]

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!

 

[HTC]

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.

 

[JB_A3_Turbo]

thanks for your help!

No hissing or grinding yet- touch wood!!

 

[imported_monkeytrousers]

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.

 

[JamS3]

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!!

 

[JB_A3_Turbo]

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?

 

[JamS3]

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.

 

[mattyboy199]

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.

 

[JB_A3_Turbo]

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.

 

[imported_VaulterTim]

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

 

[JB_A3_Turbo]

ok thanks..

 

[benk]

Out of interest, what colour is your car?

 

[JB_A3_Turbo]

dark blue metallic.

 

[benk]

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