Running a 64mm Garrett ball bearing water/oil cooled turbo and the boost is there but I have been looking into it and people have said the housing on that turbo maybe to big for my truck and with my mods I may have to get better injectors or twins or a bigger better intercooler. But all that **** cost some dough and i can't do it all at one time. Tork tech overflow valve are studs,o ringed block and head gasket,5inch downpipe to a true 4inch all the way out,no fuel plate, timming advanced,7k in the Trans. This is my first diesel so I'm kinda lost. Learning as i go

 

OK, this is starting to make a little more sense. Did you build this combo or buy it that way? First thing I'd do is put a plate in, or better yet, get the AFC Live setup so you can modify things like preboost fueling on the fly and monitor the affect.

 

Lol this is all mechanical no computer junk on this one

 

"AFC Live" is for mechanical injection motors not computer injected. The name is kind of deceiving, as for your issue what Garrett turbo and housing size is on your truck? Also what is your injection timing set to?

 

Gt37r Garrett stage 2 dual ball bearing not sure on the housing size. Just got to Houston and ran 75 80 mph at at about 10 12 pounds of boost and depending on the road 900 to 1100 egt and the timming has been advanced but not sure how much my buddy has a shop and he did it.

 

does the truck idle smooth? or is it kinda choppy?

 

Choppy, more so now that i pit in the tork teck i think

 

sounds like you have an air leak somewhere in the fuel system, could be a DV o ring, injector line loose or cracked, or a leak in the fuel return. Your idle should not be choppy.