Abnormal turbo whistle...

[KevWak]

Hi guys,

As some of you know, I have recently had my 2.0D S40 remapped at HLM.

I noticed the other day that I have rather a strange turbo whistle when accelerating. You all know the normal whistle that increases in pitch as the rpm rises, well mine does this with a difference. Instead of the smooth whistle, mine is stepped.

The pitch does increase but there are loads of split second pauses as the pitch rises.

Not sure if you guys understand my garbled description, but if you do, is this an indication of a fault? Or is it normal and I've just not heard it before?

Thanks in advance

Kev

[hamish]

Hi Kev,

It's normal. The noise is just more pronouced now that the car is tuned and you are not the first person to comment on it.

Regards,
Hamish.

[KevWak]

Cheers Hamish

Put my mind at ease.

I was a bit nervous booting it!

[wegal]

As Hamish says.. totally normal to get more turbo noise after a remap, mine used to make a twittering noise on lift off !