N14 issues

[race7820000]

My N14 was overhauled 3/16, I bought the truck in 2/18 and maybe have put 40k miles on it this year, according to the receipt the Truck has 230k roughly on overhaul.

I took to cummins cause it was missing. Or I thought it was and doesn't have power.

They "fixed" the miss a little lol but truck is the same. Still has a miss. Just not as severe. The guy that did the injector and dynoed it after said he can feel the miss under a load they just can't pinpoint it. And suggested a computer, etc etc, I really don't want to throw parts at it. It still Doesn't have the power. It will maintain speed pulling a load up a hill. But if your on the flat and your mash it, it just sits there and takes forever to gain speed.

It's a 525hp 13sp 3.58 gear

They Said blow by was 12 inch under load. Which I would think is high.

When the Truck runs there is no smoke whatsoever out of stacks and burns clean.

Is there a way to test the turbo to see if it's causing the blow by part?

I realize that just because it was rebuilt doesn't mean it was done right or something else happened.