Dual fuel pumps
10-14-04, 01:10 PM
#1
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Dual fuel pumps
I'm curious how you would hook up 2 fuel pumps. I've heard of people (mostly Supra owners) who run this type of setup.
How do they connect?
One fuel pump for each fuel rail with a fuel pressure regulator?
Can they be run in parralel form? And if so, does it run to the same fuel line?
Do you need a larger fuel line?
How do they connect?
One fuel pump for each fuel rail with a fuel pressure regulator?
Can they be run in parralel form? And if so, does it run to the same fuel line?
Do you need a larger fuel line?
10-15-04, 05:45 AM
#3
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the HAVE to be connected in parralel, ,running them is series would be couterproductive.
Yes, you can run one to each rail and then most setups run through one FPR (SX and Aeromotive FPR's have two input ports, one output)
Guys needing this type of fuel flow will usually be running 8-an fuel lines.
These are usually OUTSIDE the tank mounted pumps, are pretty pricey and are pretty freakin loud!!
Yes, you can run one to each rail and then most setups run through one FPR (SX and Aeromotive FPR's have two input ports, one output)
Guys needing this type of fuel flow will usually be running 8-an fuel lines.
These are usually OUTSIDE the tank mounted pumps, are pretty pricey and are pretty freakin loud!!
10-15-04, 07:12 AM
#4
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Running (identical) fuel pumps in series will raise maximum fuel rail pressures.
Running (identical) fuel pumps in parallel will raise maximum fuel capacity.
It is not recommended to run two different (capacity) fuel pumps, as you run into fuel delivery differential problems which can cause fuel to flow in reverse.
I know at least the Haltechs have an option to run a "staged" 2nd fuel pump.
The Haltech triggers this second fuel pump depending on load signals from the MAP sensor.
-Ted
Running (identical) fuel pumps in parallel will raise maximum fuel capacity.
It is not recommended to run two different (capacity) fuel pumps, as you run into fuel delivery differential problems which can cause fuel to flow in reverse.
I know at least the Haltechs have an option to run a "staged" 2nd fuel pump.
The Haltech triggers this second fuel pump depending on load signals from the MAP sensor.
-Ted
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