Car is '53' A3 8L 2.0 tdi
Ive noticed at low speeds/gears a dump value 'tisss' and turbo 'blow off' noise perhaps through the airbox.
Is this normal to hear from a standard car? from cold start its at its loudest - loud enough for people down the street to turn heads!
I dont mind the noise - In fact id like it louder! But ive not heard it from other cars, so I wonder if ive a problem?