Wheels

Don’t know all the technical stuff been on computers reprogrammed the ecm checked fuel pressure going down the road they said over 70 psi the truck has had some deletes don’t know exactly what that means!

Any ideas. Been in 3 different shops one week per shop need advice!

Boost runs top of 15 

No codes    Changed ecm no change

Checked injectors and cups

Replaced turbo

Checked fuel line pressure 

Changed actuator on turbo

Tested air to air was good

Engine is a mp8

Changed fuel filter put  in Howe’s and new fuel 

Looking for pedigreed bulldog to get advice?

Bought 2009 Mack run first trip has no power! Prior owner took truck back to fix it been three weeks can’t figure it out no codes and low boost , any ideas?