ive just recently had my gti serviced by my local mechanic, and had timming belt, water pump,etc new plugs changed, and i thought the other day when i was driving along that it felt like it would pull hard cut out for a second and pull hard again it done it 3 indiviual times in the same gear going up the rev range, and yesterday i was sittin at 40 n 5th dropped to 3rd and the same happend again but was much more noticble, i think it may be the dv, my gti is a 2005 with 29k on the clock, and im also sure that the noise from the dump/wastegate has changed/fadded since friday.
any ideas?