Hi I recently bought a Mazda 5 turbo diesel it came with receipts of a new engine and turbo 2 years ago but when I first drove it there was no power from the turbo so I have had this replaced to see if that fixed it but no luck. I have checked for vacuum leaks there is non and no splits in pipes etc symptoms are start the car it’ll Rev fine and the turbo spins fine etc but put it in gear and drive it goes but won’t pull properly feels like it has no turbo it’s strange the air filter and everything are clean. Any idea what this could be ?? Car is 2008 by the way