thanks for the replys guys
thanks Tanuki
ur reply sound about right but wastegate all free
i can drive about 2 miles all ok, then starts too judder like it cutting the boost in and out, and then its just flat like its in a derate mod/limp
its also been doing well over 500 miles to a tank on hard work/speeding etc but flat out at 80mph (due too nomore go )
could be the map sensor been faulty stopping the boost and the engine aaarrrr ?
!! unless the waste gate sticking when warmed up !!!!