| Re: HP limitations of stock RF fuel system
Mark
One of the best tests is flow.
I have seen pressure but not a lot of volume.
When you are on the dyno put the fuel return into a container(return at fuel rail).
There will be enough fuel in the surge tank if you dont mess around.
Have the car hot start it & do a power run.
If the engine consumes more than the pumps will supply the fuel return will go down to a trickle.
I would expect a lt per minute or more at full noise from the return hose into your container.
Do it over 30sec & double it or 15 & X by 4 ect.
Keeping in mind the return I presume is returning to the surge tank on the std RF system this does help maintain fuel volume in the s/tank so dont hang around.
Doing it this way I find is good as it is a dynamic test with everything under full load & it leaves nothing to chance.
Jim |