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Model specific boards => Golf mk4 => Topic started by: craig g on 14 April 2006, 10:56

Title: turbo whistle
Post by: craig g on 14 April 2006, 10:56

ive had my gti a few weeks but only just noticed the whistle when i had the window down is that right.
it is a progressive whistle !!
also at what revs does the turbo kick in

Title: Re: turbo whistle
Post by: Dizzie on 14 April 2006, 11:34

fit a boost gauge and you'll see the boost
otherwise around 2000rpm

Title: Re: turbo whistle
Post by: Flipmode on 14 April 2006, 14:53

The whistle is normal mate, its the sound made by your dump valve and not really audible inside your cabin, just when u have your window down. It should be a clean crisp noise without any fluttering or jitters, otherwise you may be in need of a new valve, the factory Bosch? ones are made with a weak membrane so they don't last too long.

Title: Re: turbo whistle
Post by: Ivor Mk4 Turbo on 14 April 2006, 18:06

Quote from: Flipmode on 14 April 2006, 14:53

The whistle is normal mate, its the sound made by your dump valve and not really audible inside your cabin, just when u have your window down. It should be a clean crisp noise without any fluttering or jitters, otherwise you may be in need of a new valve, the factory Bosch? ones are made with a weak membrane so they don't last too long.

No, the diverter valve makes its' noise when you lift off the gas!!!

The whistleing noise is normal, Craig, & the turbo kicks in about 2.5k.

Title: Re: turbo whistle
Post by: Flipmode on 14 April 2006, 18:21

oops! still learning  :embarassed:

Title: Re: turbo whistle
Post by: JonnoGti on 17 April 2006, 11:56

Perfectly normal the whistle is! Like someone said you only hear it when the windows are down. I love the whistle myself!  :cool: