The CP3 pump is a high pressure pump that supplies constant pressure, and the injectors have to be physically opened and closed (Electronic, or otherwise, cam, plunger, etc).
The VP44 pump is a jerk style pump, and the injectors are dumb, mearly having a pop-pressure. SO, when the pressure gets to a certain point, the injector pops open (Like any pop-off valve would), and when the pressure falls below that point, it seals off. During injection, the pressure from the VP pump far exceeds the pop-off pressure, enhancing atomization...
So, having a CP3 pump into a rail, which, the pressure of a CP3 and a typical rail, exceeds the pop-off pressure of a VP44 injector, even at idle (5k PSI), will not work, because the injector will be injecting fuel at all times...
Unless I totally mis-understood your post... then, nevermind.
Increasing the volume of the injector lines (by adding a rail, possibly to each injector line? That's the only way it would possibly work) would have too mnay consequences, and most likely wouldn't work. Just look at the differences in drivebility, and idle lope, HP curve etc when switching from .89 lines to .93 lines and cross overs...
The high pressure CP3 pump cannot be operated like a VP44 jerk style pump... The two systems are completely incompatible.
Merrick
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