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Dual fuel pump control

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Old Yesterday, 08:02 PM
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Default Dual fuel pump control
What are you twin pump guys doing?

1) Both pumps full blast all the time
2) One pump on a Hobbs switch
3) One pump on a WOT switch
4) Pulse width controller
5) Other
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Old Yesterday, 08:25 PM
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Haltech running primary pump pwm and aux pumps on a relay activated at rpm and map thresholds.
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Old Yesterday, 11:49 PM
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2nd pump on Hobbs switch. If I was using Holley EFI and not the stock PCM, I'd have the Holley control it.
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Old Today, 12:46 AM
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I drive around on a Bosch 044 pump, and the Weldon 2345a comes on when I start boosting. E85.
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Old Today, 01:01 AM
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Both pumps full blast all the time. Walbro 450s
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Old Today, 09:15 AM
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Originally Posted by LilJayV10
2nd pump on Hobbs switch. If I was using Holley EFI and not the stock PCM, I'd have the Holley control it.
My last car and my current car are set up the same way using the factory PCM.
Hobbs switch that kicks on around 5 lbs., twin 450's.
Never had any issues.
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Old Today, 10:02 AM
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On my setup we have dual in take 450's. One runs all the time. The second is triggered through the Holley to come on at 70% throttle.

Runs on e85 as well
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Old Today, 05:17 PM
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Holley Dominator here. Racetronix 340's. Second pump comes on at 45% TPS or 5 psi whichever comes first
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Old Today, 05:50 PM
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nitrous outlet window switch is what im goona do.
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Old Today, 06:38 PM
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Using three 450 pumps. Runs one pump then the second and third come on based on boost via a Hobbs switch and Fora system. E85 fuel.
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