Hello and Thanks for the help in advance. I'm having troubles with my truck when pulling a trailer. When I hit a grade the truck gets sluggish has no acceleration response unless I put it to the floor and literally force it to go and it will go ahead and go. I've done everything I know to do.The engine was bulletproofed over a year ago and it ran beautifully after that. This problem just started a few months ago. I've also noticed it has no power under take off if you have a load behind it when it's cold it doesn't matter the temperature I'm just talking about a cold engine. I don't think it's an injector problem 3/8 injectors replace with new ones and all the rest of them were rebuilt with all rings and bench flowed at the time of bullet proofing. It has a brand new Turbo 2 weeks old. I have replaced all the fuel filters and install the Blue Spring kit. I have replaced all the boots on the intercooler tubes. The truck does not run horrible it just doesn't run the way it did a few months ago. I'm sure there's other things I've replaced that I'm not remembering I'm just kind of out of options and looking for some suggestions. The engine is not throwing any codes whatsoever. The fuel mileage is poor also in my opinion I'm getting less than 10 miles per gallon pulling an enclosed 28 foot trailer weighing about 7,500 pounds.

 

We need numbers such as boost, icp eot coolant temp etc. the more the easier to help.

 

I'll work on getting them. I have a Scan gauge ll hooked up to the truck at all times. When I'm cruising along about 70 I believe boost is around 18-19 and it will boost to like 32 when I make it. Ect right at 190 and Eot is around 216.