Oh man, that was almost 13 years ago. All I remember is that the pump was obviously cavitating, so we used vice grips on the line to restrict the flow while returning fuel into the tank through the filler connection so we could work out the problem. Then we did the same thing (just flowed fuel in a loop) after we modified the canister to test the changes.
However, to amend my earlier comments, since fuel returns to the can in the stock setup, and not to some other tank, my thoughts about it draining the canister without pressure are wrong. It'll just circulate a lot faster. The jet pump only has to replace the draw-down, not the entire 400+ lph fuel flow that the stock pump will do without backpressure.
However, to amend my earlier comments, since fuel returns to the can in the stock setup, and not to some other tank, my thoughts about it draining the canister without pressure are wrong. It'll just circulate a lot faster. The jet pump only has to replace the draw-down, not the entire 400+ lph fuel flow that the stock pump will do without backpressure.