Engines are slow out of the hole

[pj1968]

I have a 45express bridge 900hours 2002 with Cummins 6CTA 8.3 engines,
the engines are getting slow out of the hole especially the port side until 1500-1600 rpms when turbos kick in, what would be likely cause?
Regular services are done just completed yearly service.

 

[hottoddie]

This is the second post you put up on same subject. See your other post for responses.

 

[kevin27]

delete