could be the map did you get that 2nd ecu? i know on petrol turbos lag can be caused by igintion timing but wont really count on a derv 
still trying to source one - there's a few golfs being broken on Ebay so hoping they'll sell me the ECU
got to elminate the MAF and N75 valve first but i'll also try a 2nd map
purely for scientific purposes of course lol
going to split this thread as i've kind of properly hi-jacked it lol
well to get it back on track my mirror was looking great until i tried putting laquer on this morning and it ran

it now looks poo so have to sandit back