Well here's a link to the claim:
River City Diesel Powerstroke Performance
The programmer is not the key that makes the HP. Its actually the guy writing the tunes and how radical they want to go within safety's sake.
My question is:
How much of the internals were modified to help make these numbers also?
Didn't see any of that info on the website?
I seen the kits but like with any other HP promoter they forget to include the dyno info. That's the other thing I didn't see! No dyno sheets?