Turbo Issues

[zudrick]

Had my turbo go on my 2010 Zafira B auto 1.9 cdti (120bhp) me last october 2023 and had a new turbo fitted by local mechanic but ever since it doesn't have any boost from tick-over i mean i have my foot on the floor and until the revs reach just over 2,000 rpm it just won't pull but after that the turbo kicks in and all hell breaks throu pulls hard, no black smoke from exhaust and no error codes(dtc) what could be wrong with it, car was remapped 2 years ago and was ok till turbo decided to take a dump?

[Vauxhall Owners Club]

What gear are you in and what road speed are you doing when trying to get to boost?
Possibly too high gear and worth trying it by knocking it down a gear?