Quote:
Originally Posted by phunk
Based on your post, there is a product series I believe you may find interesting. Fuelab has a line called "Prodigy". The prodigy pump is controlled by their fuel pressure regulator. The regulator monitors volume of return fuel. It has a target volume it tries to meet, and it will increase or decrease pump speed to achieve as close to that return volume as within its range. This means the system is providing the "just right" amount of fuel at all times, proactively, before there is any pressure drop or increase.
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All of that about our electronic regulator is true. However, the pumps have other means of controlling the speed without an add-on such as the regulator. That electronic regulator is fairly new- it's been out about a year an a half or so. We have had only one warranty return/repair since their release. They have been working out really well for us. The regulator can also control more than one pump. We have several guys in the drag racing world that are running on straight methanol (much more flow needed). They are using a pair of our big 42402 pumps and controlling them with one regulator. With that said, you can control the pumps via other, potentially less expensive ways. The electronic regulator gives you variable speed operation. Another way to get the variable speed operation is via a PWM signal from an aftermarket ECU (some factory ECU's can do this as well, but that's pretty rare). If you can feed the signal terminal on the pump a PWM signal that's been 500hz-1500hz, it should work just fine. That would require a bit of tuning/setup unlike the plug and play regulator- but people have been doing that for years (long before we designed/released the regulator. Another option that works well would be a simple switch, RPM window switch, WOT switch (like what's used in a lot of nitrous systems), a Hobbs switch, etc. Those options would give you a simple high/low operation, rather than variable speed. Leave it on low for street driving and flip the switch for racing and things of that nature. In the case of a Hobbs switch, the pump would be in low speed mode until the Hobbs switch sees the engine come up on boost- when that happens, a signal would be sent to the pump to tell it to go into high speed mode. It goes without being said, but our pumps will work with any regulator- our standard and mini regulators, the electronic version, or any other brand out there. Our EFI pumps cannot be setup as a returnless or deadhead type system, although our carb line of pumps can (not that carb pumps are of any use to you guys here).
The pumps have a very simple wiring setup. Power and ground just like any other pump. There is a center terminal that controls the speed of the pump. If that center terminal sees ground, the pump will operated in a pre-programmed low speed mode (40%-60% flow, depending on pump model number). When that ground is taken away, the pump will operate in high speed mode.
If anyone has any tech/install questions- feel free to contact me. No sales questions please- just keep it tech related. I'm just here to help from a tech standpoint with fuel systems in general (doesn't have to be our brand).