2005 6.0ltr/tourque shift PSD build date 09/04 while towing (8klbs) under a slight grade in 5th gear @ 1600 to 1900 rmp the turbo is quiting momentarily, you can see it drop about 5 psi on the boost guage and you can also hear the boost dump back into the air cleaner box. this also occurs in high altitude (6500 feet) in 3rd or fourth gear @ 3k rpm. No recalls on for this vehicle and the vgt actuator, egr, ebp sennsor have been replaced, the latest updates have been installed. this problem has been there since the truck was new, after the work mentioned was performed it has been happening less often but the problem is still there. No codes are present and the hotline doesn't have any solutions. has anyone had this problem and what was done to repair it. Any help will be greatly appreciated.
