| They are meant to run at a static fuel pressure of 43 psi. And once you start bring up the fuel pressure there flow starts to drop down. Use this link as a reference. (which we had something this nice in our FAQ section :-)
[ http://www.stealth316.com/2-fuelpumpguide.htm ]
and another
[ http://www.vfaq.com/pump-Walbros.html ] Here is a borrowed charted from there.
 Something interested to consider is what happens when raising the voltage on pumps. ATM I am only running 1 pump myself made well over 500RWHP+ @ 14.7 PSI using just AFC and JWT 850CC ecu. And have been wanting to turn up the boost to 35PSI and see what I get but. What to do about more fuel delivery is where I am stuck, do I increase the voltage? Do I add an inline pump out of the bottom of fuel tank? Do I replace the factory pump with 2xWalbro? Do I add a 2nd factory fuel pump in the 2nd sabble bag of a gas tank. These are all interesting options but I am not sure which is the best atm. I guess I should find out what others are doing. See Walbro pumps have a high failure rate atleast in my opinion and there are not many big flowing fuel pumps that are in tank. And the inline pumps like Weldons are noisey. So this brings up the question what if we just boost up the voltage on the factory 300ZX pump. On the boost a pumps there is claims that fuel pump can flow upto 43% more @ 17 volts versus 13V.
|
So the bottom line is that NA pumps are designed for NAs - 
