***Official NV Chat Thread***
Oct 27, 2011, 02:23 PM
#9181
I'm not an expert on fuel systems and I would agree that those two items are bottle necks....
I remember someone telling me that with two fuel pumps you might need to raise the base fuel pressure to make them flow more efficiently. The fuel rail could become a bottle neck, but not as much as the two mentioned above.
I remember someone telling me that with two fuel pumps you might need to raise the base fuel pressure to make them flow more efficiently. The fuel rail could become a bottle neck, but not as much as the two mentioned above.
Injectors, on the other hand, flow more the higher the pressure goes, as they have line pressure helping to increase flow rate.
Oct 27, 2011, 08:33 PM
#9188
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Buschur has gone 9.0 on the factory rail/regulator. I also run an OEM regulator.
That is all you need to upgrade, Jim.
Actually, Eric.... You have it a little backwards. Pumps are more efficient at lower pressure. The walbro/aeromotive/dw pumps ALL lose efficiency bigtime once they get to 70psi of pressure. Base pressure is 43psi, so at 27psi of boost, the pumps start to lose flow.
Injectors, on the other hand, flow more the higher the pressure goes, as they have line pressure helping to increase flow rate.
That is all you need to upgrade, Jim.
Actually, Eric.... You have it a little backwards. Pumps are more efficient at lower pressure. The walbro/aeromotive/dw pumps ALL lose efficiency bigtime once they get to 70psi of pressure. Base pressure is 43psi, so at 27psi of boost, the pumps start to lose flow.
Injectors, on the other hand, flow more the higher the pressure goes, as they have line pressure helping to increase flow rate.
