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Old 05-30-2003, 01:02 PM   #1
SubaFastR
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Default rising rate fuel pump controler

Anyone ever use a rising rate fuel pump controler? It raises the pump's rpm based on boost. JIC's supercharged 350Z uses one. It seems to be quite effective.
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Old 05-30-2003, 01:39 PM   #2
BOY
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why? just buy a large enough pump.
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Old 05-30-2003, 01:46 PM   #3
SubaFastR
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because it is easier to adjust and more effective than a rising rate fuel pressure regulator.


The new Aeromotive Billet Digital FMU is a fully adjustable, scalable electronic FMU designed specifically for returnless fuel systems. The Aeromotive FMU senses manifold pressure and automatically provides the fuel pressure that you dial in, maintaining proper air fuel levels at all operating conditions.

When used in conjunction with an external fuel pump, the Aeromotive Billet Digital FMU will allow a supplemental pump (sold separately) to provide the proper volume thereby increasing the system pressure.
The Digital FMU is scalable and completely adjustable to provide increased fuel pressure levels at any boost.
The unique capability of the digital FMU, unlike traditional FMUs, is the ability to provide “any” fuel curve throughout the power range.
The FMU features LEDs that are tied to a scalable rotary knob. This allows you to create a fuel pressure curve that corresponds to your boost curve.
The housing of the controller is made out of Billet 6061-T651 aircraft aluminum alloy and is finished with a bright dip red anodize.
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Old 05-30-2003, 01:52 PM   #4
BOY
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Quote:
Originally posted by SubaFastR
designed specifically for returnless fuel systems.
This means nothing for us, we have a return.

Quote:
Originally posted by SubaFastR

When used in conjunction with an external fuel pump, the Aeromotive Billet Digital FMU will allow a supplemental pump (sold separately) to provide the proper volume thereby increasing the system pressure.
You need 2 pumps for this thing to work, doesn't seem that beneficial. Neat toy, but I don't think its a replacement for an adequately sized pump and proper management.
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Old 05-30-2003, 01:57 PM   #5
SubaFastR
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2 pumps are not required. It was designed to solve the issue of how to do a rising rate on a retunless system. It works just the same if there is a return line.
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Old 05-30-2003, 02:27 PM   #6
BOY
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Sorry, just going off the product documentation you provided. It says it needs 2 pumps. Either way, its a moot point as its designed for a returnless system.
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Old 05-30-2003, 02:33 PM   #7
SubaFastR
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BOY, I asked if anyone had used one. I know the creator of the unit and it indeed works fine on our fuel system. MSD offers a very similar system, but with less adjustability. Running 5-7 lbs of boost using this unit and a J&S Ultrasafeguard should be just fine. Once my block is finished, a Link ecu will go in with big injectors and fuel pump. It may sound like a waste of time, but I am quite tired of 165 hp.
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Old 05-30-2003, 04:47 PM   #8
smacksube
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well...while you have to worry about adjusting your fuel system to run 7 psi adaquately, we'll just be happy with 255 lph pumps and a fpr.
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