I have a 03 ford 6.0, also not really sure on how to list the mods after your post, is that in your signiture? But in this case the important ones are the injectors, and HPOP. Recently I put a lot of money into my truck, which included a set of EDE 225cc injectors and a FASS fuel system. I did not address the HPOP at that time because from what I researched it should have had the volume to keep up with those injectors. So after I got it back at WOT it kept falling on its face, I kept thinking it was a tuning issue. So HPO became a question after tuning turned out not to be an issue. I installed a set of autometer gauges to monitor parameters that my livewire wouldn't display, those are a HPOP, Fuel Pres, Nitrous Pres, 2000 degree pyro, and 60 psi boost ( the live wire will only display 34 psi cause thats all the map sensor will read ). By the way they are autometer ultra lights and they look killer on a 4 guage pillar and the 5th was custom mounted in the dash.

And so on, So at WOT on my race tune after the engine was warmed up, it would only maintain about 1200 psi. On my lowest tune it would maintain about 3500 psi throughout most of the power band. So after I knew I wasn't maintaining HPO when I drove it I babied it for the most part, but I think the damage was done. About a month and a half later I was driving to supper and it decided to just quit, came around a corner went to accelerate out of it and it died and wouldn't start.

Towed it to MCS Diesel in Pacific, MO, they diagonsed it and confirmed it was the HPOP.

Now, I have been researching High Volume HPOP's, and to be honest there isn't a whole lot out there, and what is out there is a VERY competitive buisiness. With that being said, researching them is difficult because any information on the pump is like giving up a secret recipe. So I have come to good old FTE to get some feedback, hasn't steered me wrong yet.

The two major one's are the Adrenaline, which is tested and starting to prove itself in the 6.0. The other is from stecher performance diesel, the stealth, which has finished it's testing phase and moving to production after they can aquire enough cores, but that time frame is still open ended. There are other options like EDE dual pumps, but after the money I spent on a race engine, 3000 dollars on a HPOP setup is a little more than I can chew right now.

I guess the only thing to use as a reference for the stealth would be the 7.3 version, but from what I understand the early 6.0 and the 7.3 are the same pump other than the housing. And the builder of the stealth pump says that his rebuild is 100% different from the adrenaline, but that's all I know.

Now, I have a good idea on how an axiel piston pump operates (never actually saw inside one though), and there are only so many parts so other than the bore of the pistons and the length of the stroke, which is set by the angle of the swashplate. What else can be done?

And the real question, Has anyone had any real world experience or testimonials on either one of these pumps?

Please, any info, links, storys, anything, would be greatly appreciated!

Thanks a million