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Author Topic: Lift pump...If...and what if....  (Read 13229 times)

Reply #60January 13, 2010, 06:50:33 pm

Rabbit on Roids

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Re: Lift pump...If...and what if....
« Reply #60 on: January 13, 2010, 06:50:33 pm »
use the in tank pump. the primary pump puts out like 40 psi. the in tank pump puts out around 5 psi. get rid of the primary EFI pump.
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Reply #61January 13, 2010, 07:01:34 pm

NintendoKD

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Re: Lift pump...If...and what if....
« Reply #61 on: January 13, 2010, 07:01:34 pm »
The pumps are regulated via voltage or current aren't they?  usually on a relay maybe that is the answer? You could run a toggle/pot to turn the pump up or down for demand, or if you could wire a pressure sensor on the return line you could make a small circuit to do it automatically for high boos/high fuel situations. 8)
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dnahtasinoivilboeraweb
you know, decarbonated beer is a better coolant than the stuff you buy at the auto store, and is better for you...... really
"If the boost were to rise then the throttle would remain in the wide-open throttle position, which might be fun, but probably not for long"Libbypapa
Reply #62January 14, 2010, 09:54:35 am

Rabbit on Roids

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Re: Lift pump...If...and what if....
« Reply #62 on: January 14, 2010, 09:54:35 am »
Quote from: NintendoKD on January 13, 2010, 07:01:34 pm
The pumps are regulated via voltage or current aren't they?  usually on a relay maybe that is the answer? You could run a toggle/pot to turn the pump up or down for demand, or if you could wire a pressure sensor on the return line you could make a small circuit to do it automatically for high boos/high fuel situations. 8)

the pumps run or dont run, theres no half way, its either on or off. the regulator on the fuel rail dictates how much fuel pressure the pump makes. and for boosted apps, usually a RRFPR is used to increase fuel pressure with boost pressure.
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