Well the plugs have been changed and the problem was present both before and after... I intend to try the stage 1 chip at 0.8bar and see if that misses/stalls the turbo with the beiges, if not then i think the chip might be at fault.

Oranoco i know you are against my fse fpr and i do appreiciate the advice but there was no issue with it before, unless the boost increase of 0.3bar has upset it...?

Im keen to cure this issue and then get the car to someone for a set-up...