hi just had top end rebuild and car runs fine on idle alittle high i would say if i rev it some times it cuts out not all the time though. or it seems like its gonna and starts to idle again some times when i boot it and come to a stop at a junction it seems like its gonna cut out and some times it does also when i put my foot down the boost is a little hesitant. ive changed the metering unit no different and also checked that the boost wasnt to high just cant work out what it can be? or does it just need a simple set up thanks if any one can help as im getting realy sick off it.

 

m8 - anything like this is best left to a tuner as it could be a number of things - timing,fuelling,tps out etc etc.
Take it to a tuner as it would cost a lot less than you buying parts to replace.