If this was a stock pump, a rebuild off of something else... sure. You are building it to the spec, you expect it to do what it's designed for, and you only have to test it per the spec(flow, timing etc).
If you are making a custom designed pump, you have to at least test it in the real world to make sure it works as designed/advertised.
OK, perhaps he can't do it himself. So someone else can beta test for him. Dyno runs are only $100-ish; Is it too much to ask to have at least one known setup with a known torque/HP curve known after three pumps, if you are selling a product? Especially one costing $1400?
If it clearly said "this is a beta test product", OK, that would be one thing - But as far as I can tell, these pumps are sold as a tested, working design.
In R&Ds case, yeah, he's doing the testing himself(some of it). He's also got others doing it for him, and getting feedback.
And there are dyno runs out there, data that we can use to independantly verify the claims.
Also, I might add - with R&Ds pump, yes, you want higher than stock PSI to supply it... But it won't hurt it to be driven with less. It just won't put out as much fuel.
And, he's rating the flow at 2800 RPM/peak HP, not (unknown RPM) - especially critical as the flow drops off on *any* rotary pump as you increase RPM.
So you could have a pump making 200 at idle, but only 100 at 2800... It won't make as much HP as one that makes 120 at 2800.
That's all I'm saying.
If I can get some solid dyno numbers(dyno sheet pictures, verifiable) out of someone for one of these pumps... I'd be discussing the merits of both. But I can't recommend something without proof. And "It goes really fast" isn't proof.
