Acert help no power no fuel mileage

Charge air cooler.. or air to air as some call it, looks like radiator on front of engine.. if its leaking theres your problem...check rubber boots going to it as well

 

Maybe your sir to air is fine but tge rubber boots connected to it might be leaking.. I still think you should book a dyno session with the truck. They will find problem

 

my opinion is in winter months you wont see much above 5.25 - 5.75 with this motor and in summer you might see 6.5 in stock form if you dont drive it like you stole it, did you get it in a cat house on the dyno to see if you have any issues.... until you do this none of the above will help you, low actuator oil pressure is not a big issue,

 

When was it making 60psi...under hard acceleration even when empty you will be boosting between 50 and 60. If its boosting at 60 going down a flat road with no wind thats a different story

 

If its set at 550 heavy haul you will see over 45 and even if you are empty you will see this under hard acceleration...I think you should change cat guys... boost is not your problem imho