all original installation VW stuff, nothing added so coming up to 10 years old in September! (radio and cassette head unit), with VW 6CD player, I notice that when it starts up on the CD it doesn't make the pumping noise...or I don't notice it if the volume kicks in quicker on the cd???As above it would make it possible to diagnose your problem of you told us the exact details of what equipment you have fitted that's causing this problem?
What headunit,what amp and what speakers?
If you turned on the ignition and waited for all the lights to go out it would pump once then, and then started the engine it would do it again (as radio powers off when starting engine then comes back on), and yes, I think only on the radio.So this only happens when you actually start the car and only on radio?
Anything would be better than a Gamma,this chosen at random is one such unit....
So that and the VW wiring adaptor shown and Bob's my Aunties live in lover? Seems good, I take it my 6 CD player can still be used (Old school and all that!).Anything would be better than a Gamma,this chosen at random is one such unit....