56, 1.9 cdti 150.

Started out with a lack of power at low end, turbo would eventually kick in after 4th gear, sometimes not at all. problem got worse and after all the oil went through the air intake system I replaced the turbo.

Test drive with new turbo and the oil loss problem is fixed, so I know the turbo seals were shot.

However there is no power at all.

EGR is blanked
No cracks or splits in any pipes
Boost Sensor cleaned

At a bit of a loss here!

Any suggestions?