Thanks for all the help and advice guys.
have had lengthy conversations with the VW garage where my car is and the garage i bought it from.
firstly the garage that its been in all day said they just couldnt find a fault.... annoying really as im sure it is a boost leak but still could be a sh*t map..
spoke to the VW garage i bought the car from: they were actually pretty good and said that they would speak to the garage where my car was all day, they came to the conclusion that a new ECU would not really help things, they did offer me my money back on the car if i wanted it (which to be honest i dont, i think i got a really good deal considering its a 56 plate and has only done 15k miles, 1 previous female owner and has loads of extra's). i didnt really push the forking out for a new ECU becuase im not convinced that this would really fix anything.
spoke to JKM in portsmouth - they also thought it was a boost leak and am trying to get down to see them soon to run a 1 hour diagnostic test followed by a REVO remap so i can well and truley get rid of this piece of sh*t WALD map!!
are there any other good tuning companies in the south? cant get into JKM till monday / tuesday and would like to get this sorted soon as really.
will probably do some research on what remap to go for and whether there can be any problems when claiming on the VW warranty.
e.g. when driving my car in 6th gear at about 70, it certainly doestn race to 100mph - not sure if it does on a remapped one since i havnt driven one, only gti ive ever driven is my one.