Well I'm back for some more help! So here is all I have done so far: EGR delete, oil cooler replaced, coolant flush with new ELC fluid, oil changed with new Motorcraft filters and Rotella T6 5W-40 synthetic oil, 2 brand spankin' new batteries, turbo pulled apart and thoroughly cleaned, all new o-rings and seals on both the turbo, turbo drain, and the upper fuel/oil filter housing and fuel lines. After putting it all back together I put the EGR valve back in for the relearn process of the VGT turbo and followed the relearn instructions. The phuckin' thing is still doing the low power when I get on it, like above 10-15 psi of boost and spittin' some gray smoke while accelerating. It seems to get less power as it warms up too. If going up a hill or trying to pass, it will shift down and run at about 3000 rpm's feels like someone is pulling it from behind. It will literally only do like 30 MPH up a hill...and when I do have to go up a hill the transmission temp goes up to at least 160 degrees on my gauge???? I can't afford to take this thing to a mechanic but need to figure this out. It has no codes and runs great besides this no power on the upper end issue. I don't have any misses or starting problems and am not blowing any white smoke. The only other thing I have noticed a couple of times is that there is water that has dripped on the passenger side and appears to be condensation coming off of the air conditioning unit inside the engine compartment? The engine temp doesn't seem outrageous though...I love this truck and just want it back. I plan on keeping it forever and need to have it running right. Any help is greatly appreciated!

 

Does it do it all the time or only when it's cold or what?

I take it you don't have any way to monitor any engine functions? Scanner of any sort?

This is a tough one. At this point I would be doing an injector buzz test, a cylinder contribution test and monitoring ICP actual/ICP desired/IPR duty.