Charles...he's probably referring to the pump I have on my site listed as 70gph @ 70psi. That is NOT the smaller pump at 100% speed. It is the smaller (41401) pump running at a reduced speed. That setup is roughly 100% more than a stock pump, certainly not 100% for than what is needed. That pump at full speed is roughly 95gph @ 70psi.
, I talked with Rob at FueLab at length before selecting that particular pump and speed combination. I wanted a pump that would do roughly 2x what the stock pump does at 70psi, so we settled on 70gph as the flow. Rob tested both the 41401 and 41402 on the bench and recommended I stay with the smaller pump. Since he's the one that builds and supports the pumps, I went with his advice.
That said, it should be noted that FueLab is in the process of making changes to their internal speed control that will make a difference in how customers can adjust the speed. It's not finalized yet, but they are no longer supplying the pump with the speed control wires hanging out where you can use different resistors to change the speed. Instead they are changing the controller to have a single terminal input for a PWM
signal for speed control, and will be offering a user programmable speed control module in the next several months. The speed control module will be an "extra" item that needs to be purchased if desired, but since it's not released yet we don't know what the cost will be.
Well, I could be wrong, but I believe I have been running this "as yet to be released" pump for almost a year. I did some testing and gave my insight on the pumps about a year ago when I first got one, and with a single battery had a few issues with the circuit design at startup. Primarily dealing with the way the speed control signal voltage was handled. I made up a few test circuits myself, and had numerous conversations with Rob about my findings, and he made more suggestions for some other things to try.
After we had been talking for a few weeks, with myself trying a few things and seeing those results, he made me a new pump with a completely new circuit board design, and a completely different speed control and processor. There are no external wires IIRC
. At that time we talked specifically about how to incorporate the speed control portion. I suggested a separate project enclosure to house that part. It seems they have gone that route, as well as making it a non-mandatory component as well. Even better.
As I said, this had been a year or so now. Now it may be the case that Rob has found a better solution in that time, but there is very little chance that you have worked with him as in depth as I have on these pumps.
41402 at 50% produces 50 - 60gph @ 60psi as of ~ 1 yr ago. And was the best match for the truck, with the available pump options at that time. If something has changed since then, please disregard my suggestion. It was not my intention to step on your toes Dennis. I never even knew you picked the pump in the first place. I was just putting the information out there as correctly as possible.
Best of Luck. And next time you talk to Rob, tell him I said hey.