Fuel problem?
09-28-2007, 08:57 AM
#23
Originally Posted by bignred
DrX, What kind of boost are you running? I will not be running over 8lbs max, so I'm wondering if I need to go to something like this or is there a simpler solution. I noticed that the factory FPR has a torx screw in the top of it. I wonder if that could be adjusted to make a little more pressure from the start? Or, could I use the Magnavolt with my sytem the way that it is?
I have run my setup with 8-12+ psi. Just running a 3.2 pulley(8-10 psi) until I get the fuel pump fixed. I feel that, on your motor, with a returnless fuel system, the 42lb/hr injectors will be pretty well maxed out at 8 psi/upper RPM range. Mototron 60's(actully 68's at 60 psi) will be able to provide the required fueling at the lower fuel pressures.
There is also an Aeromotive inline booster pump controller("Digital FMU") available for returnless systems. This allows you to add an inline booster pump without requiring a return line. Best price I have seen so far is $420
http://www.aeromotiveinc.com/product...tsub=0&prod=32
09-28-2007, 10:37 AM
#25
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DrX, Shift at 5600rpm, Do you think the Aeromotive unit would be better than the Magnavolt? I drive the truck alot, so I would like to stay away from meth if possible. I would think I would be always having to fill it.
09-28-2007, 11:58 AM
#27
Originally Posted by bignred
DrX, Shift at 5600rpm, Do you think the Aeromotive unit would be better than the Magnavolt? I drive the truck alot, so I would like to stay away from meth if possible. I would think I would be always having to fill it.
Not sure if adding an inline pump will be that much better than boosting the voltage to the single 255 you already have unless you add an even higher flowing pump($). Max flow will always be a little higher than that of the higher flowing pump in the series. If both pumps were 255's, then you might be better off with just a voltage booster. Unless the Aeromotive unit also allows you to to control the voltage to the second pump.
Either way the intank pump still needs to be working properly.
I know someone on here has used the Aeromotive unit, just don't recall who.
10-02-2007, 09:33 PM
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O.K. the latest update. I replaced the FPR and removed the factory fuel filter. When I put another FPR in, I turned the screw a little. Now the fuel pressure starts at 62lbs, but still drops to 53-54lbs. There is nothing else but fuel lines and the injectors. What's going on?
10-02-2007, 10:58 PM
#30
O.K. the latest update. I replaced the FPR and removed the factory fuel filter. When I put another FPR in, I turned the screw a little. Now the fuel pressure starts at 62lbs, but still drops to 53-54lbs. There is nothing else but fuel lines and the injectors. What's going on?