mondeo st tdci 2.2 no boost below 2000 rpm?

Had new turbo and intercooler fitted to my 05 plate st tdci all standered not modified in any way i had boost from 1500 rpm upwarads on the old turbo now i have new fitted the boost dose, not start till 2000 rpm and get full around 2500 rpm there are no air leaks at all it as all on to pull at bottom end of rev range untill you get to 2000 rpm had a remap from a specilist still the same anyone any ideas thanks.