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So from the digging I have done, the DE pump programming is different due to the fact that the computer essentially manipulates timing with when the fuel solenoid is open and closed in relation to crank degrees. If more fuel is needed it will hold the solenoid closed longer. If timing needs to...

I'm almost convinced it would just be easier to use a stand alone computer than manipulate the signal via an external box or even the programming itself. The stand alone I mentioned is actually built for common rails mostly but it drives both Piezo injectors or solenoid injectors. The computer...

Got you. That sounds like it might be able to hold the solenoid closed a bit longer maybe.

What does it do?

What is the power adder that you speak of if you don't mind me asking? And he sounds knowledgeable. Its always good to know a good builder. One thing I do think though, is different builders may have different techniques to get more fuel out of certain pumps. The only reason I say this, is...

I agree with alternate tuning. Did the pump guy know about being able to chip or tune the stock ecu? What do you think is the difference with DE solenoid?

I have seen the cam rings. That's why I was wondering if it would work. I have heard they can interchange even with the big differences in them. Other than the ramp differences, what do you think would be the hold up? I do know that DB pumps have limiters where the DS4 does not.

Hmmm a different solenoid. That's intriguing. I wonder if it is faster responding or what? Also there should be some parts from DB pumps that can be adapted. There definitely seems to be an issue with just a lack of aftermarket combined with issues in tuning.

Hmmm I wonder if running an Adaptronic stand alone ECU would make it easier with its tuneability? It costs about $1600 but has endless possibilities tuning wise due to the adaptability of how it was designed. That might make tuning and adjustability easier.

He's always been pretty busy. I do know he has a lot on his plate building his current products and expanding the Ford IDI product line as well. He hasn't talked a great amount with but just thought it was possible to get more fuel. I don't need an insane amount of fuel, it would be cool to get...

Its kind of like the fact that for the longest time a VP44 couldn't be modded much above 200cc but now they are able to push over 500cc.

Yeah I was meaning the DS4. What we talked about was just in a quick conversation but I may be mis-remembering. I see no reason that you can't get more out of the pump though. Increase flow through the pump and other things as well. I understand that is simplified but he has gotten 150cc out of...

Yeah you definitely don't want to get the pressure to high if I'm understanding what you are meaning. I think a slight bump in pressure would be beneficial though. Did he ever mention what he would do to the pump to get that? Justin at R&D Performance said he thought he could work it over to...

OK. Interesting. I do think it would be possible to increase flow to a great degree. I was talking with 6.2l about it quite a bit. One thing I was thinking about as well, is that the transfer pump would need adjusted to compensate for the additional flow.

So I was looking up the plunger size in a VP44 and it has 3 plungers that are 7mm. The DS4 has 4 plungers that are .310 or roughly 7.87mm. The cam ring has more lift but with the DS4 having more plungers, I can't see why it couldn't push close to the same fuel as the VP44 with stock internals...

I too have wondered how much extra the pump can push with the extra solenoid closure time. If I can get everything to work, I would probably have Justin from R&D Performance build me a pump. I would definitely test this on the pump that I have sitting on the shelf first though. That IP is on...

Yes I would like to or I would even help someone attempt this if they want to before I am at the point where I can do it. My first project is adapting a Ds4 to my 7.3 IDI. From what I can tell, is that it doesn't matter the direction the Ds4 spins. The optic disc and stepper motor seem to work...

So I have been doing some thinking after I first noticed the similarities between a Bosch VP44 and the Stanadyne DS4. I think it is possible to adapt a Cummins Fuel Comp box to gain additional fuel solenoid closure time that the ECM cannot provide. The best boxes would be tha control fuel only...

Ok. I'll keep an eye out if you ever get the chance to look on a warm day.

Maybe I'll just have to see if I can get the part numbers for the harnesses and sensors and buy them that way. Would that be hard to get the past numbers for that stuff?