Petrolheads, a question for you.

[billyskank]

I noticed driving with the window open, that when I give my car the beans, it makes a short hissing sound when I press the clutch to change gear. I was wondering what this sound is. It sounds a like a dump valve, except far quieter (and my car doesn't have a dump valve - obnoxious things).

It's got a turbocharged petrol engine. I was wondering if it has something to do with the wastegate. The car is young and seems to be in good order so I assume it's working correctly.

[fizzgig]

1. i have no idea

but i can tell you that i did not read your subject line properly the first time i looked at it :P

[billyskank]

2. ...

:rofl:

Thank you. :hug:

[fizzgig]

5. i think i'm going to have the brain of a 17 year old for the rest of my life

and i don't know that i'm all that bothered by it

:rofl:

[billyskank]

6. You've got the balance just right.

You aren't childish. You can live and take care of yourself, which is the most important sign of maturity. And you couple that with a childlike sense of humour which makes you fun to be with. Which is why I will love you forever.

[flvegan]

3. Could be the wastegate.

Though for you to hear it like that, you must be coming off a good amount of boost. Do you know how many psi of boost your car makes when you give it the beans?

Dump valves are annoying.

[billyskank]

4. Kids always let them off as they go by me when I'm walking

I am sure their only purpose is to scare the shit out of people.

I can't find the max boost pressure in the specs. That's a bit too technical for the normal literature. It's the same VW 200hp TFSI engine that you get in the Golf GTI and the Audi A4.