have a flat spot on boost
basicly when it gets to 3k it holds back and anying over 4k it pulls fine ish but alittle hesitant it struggls to rev iv been told my injectors need cleaning as my fuel consumption is crazy and pops every so often what could also this be as its anoying to dive??? chears all

 

You could try a set of plugs as it sounds like the boost is blowing your spark out, are they gapped correctly.

 

ok ill take them out and cheak the gap????chears