thanks to all the sedimenter was half full with emulsified water now goes well have also removed cat and fitted straight through stainless but with defender downpipe..remarkable improvement..thanks again to all who replied

Hi I am the proud owner of a 99T 300tdi Auto imported from Japan with a total of 55k miles..the car drives superbly BUT under hard acceleration it splutters at around 3000 revs,picks up momentarily but splutters again..as though the diesel has been turned off and on and off and on etc ..revs ok...