06 C-15 550hp cummings eater !

I own a 06 C-15 I have put the heavy haul program in put a bullydog exhaust manifold on straight piped exhaust changed my fuel lines from-6 to -8 lines removed as many of the 90s as possible reversed the fuel flow thru the head put the longer spring in the fuel pump its running 115psi fuel pressure at 1200rpm bought a fuel/boost harness I found on eBay for 250bucks it brought my boost up to 60-65psi depending on humidity in all I spent around 4000 not sure of the hp its puttin on the ground but its out pulling 750hp dyno'd isx15 my cat has 28000hrs on it and all the add ons haven't seem to have hurt it at all any questions feel free to ask I'm willing to help

 

I pull everything from 5axle up to a 10axle double drop pulling 8axle loaded 60000kg running 4.8-5mpg 1 thing I've really noticed is where the truck used to have to work its idling along I mostly run off road in northern Canada not a lot of pavement pounding

 

Yes the newer style pump. Larger high pressure lines drilled all my fittings no air dog though a buddy tried 1 out all we found was high pressure before the pump so I never put one on instead just mde my own fuel line kit

 

That's exactly what the air dog does I never noticed a difference but on my 6.0 ford it was very noticeable. When I rebuild my C-15 I'd like to turn it into a C-16 or even a C-18 I've read its possible

 

Wore out that is a nice looking old truck I'm guessing its no where near wore out