S3 Exhaust Valve

Hi all,

I had much car serviced today and the technician (a good mate of mine and an Audi trained tech) - noticed the vacuum pipe for the exhaust valve had been disconnected and 'bunged' with a screw, this left the valve in the close position. As the valve can be opened / closed he removed the screw and fitted a new piece of vacuum hose.

From what he said and from other posts I've read, the valve allows to car to be quieter a low rpm then open up as you put your foot down thus making a bit more noise ....... so with it reconnected I took the S3 for a blast but didn't really notice much difference?!?

With the car stationary I put my iPhone in video mode under the rear box and filmed the valve as I rev'd the engine - nothing happened!

Is this because revving the engine does not 'create' the same driving effect that would normally operate the valve or is something knackered? How could I test it / prove it's now working?

Thanks

Ok! What about the vacuum unit itself?

No, like yours it is open with the engine off, its a bit late to start the engine but with the engine running at idle presumably the valve would close?

Might just revert it to how I found it as in the month of S3 ownership it's all I've known and it hasn't been a problem!

Thanks for your replies

Should have checked the obvious before I posted but thanks for your help Marshay!