Thread: 600+ and fuel setup
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Old 11-04-2013, 12:09 PM   #25 (permalink)
Zat_Zuma
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Quote:
Originally Posted by phunk View Post
One of OEM's reasons for keeping the pumps small are very strict EVAP emissions regulations. This is also one of the several reasons for a factory return-less fuel system.

What you mention about a twin pump setup.. that is very close to what is already being done. The Nissan GT-R uses 2 pumps from the factory in a comparable configuration.

We offer a twin fuel pump unit to our customers. We always recommend that people wire it to be staged, where one 255lph pump is on full time, and the second pump is energized at higher engine load.

It isnt a good idea to wait until fuel pressure drops to engage the secondary pump.
I've just begun to research the idea of a two staged fuel pump energizing system for my CJ Motorsports twin fuel pump with a full return fuel setup.

Any recomendations? I do like the idea of a RPM based trigger

Zat
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