hi
i was having problem with power loss and its happened after a major service (incl cambelt) at a VW dealer.
i went back to them but they couldnt find the fault and then finally i gave up with them and then went to a independent diagnostic ppl and they said its the air mass meter. since i have changed the AMM its running fine.
its really wierd that AMM is a common problem in golf gti's but still the VW guys couldnt track it. infact the whole experience wasnt that great, i was kinda telling them what exactly to do rather than the other way around.
anyway i got it all sorted and im enjoying my ride... (fingers crossed)
the VW dealers are in london - citygate VW.....hopeless