highest horsepower 3rd gen with stock fuel system
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Mine had the filter housing mounted fuel pump that "sucked" the fuel. But I made 466hp with the Smarty on 9 with it. Fuel pressure was zero or close to it though.
After adding the GDP Walbro I made 467 on a different dynojet.
I don't think my stocker FP would have provided any more fuel to make more power though....or certainly not much more. The intank pumps probably provide a little better pressure and supply though.
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Problem is I did not have anything to monitor those pressures during my dyno runs. I only recently got the Quadzilla RP/FP gauge, and that was after the fass system so I will never know what they were on the stock system. I know my fuel psi had to be dropping to 0, I just don't see how it wouldn't at my fueling level. As far as draining the rail I still get some cut out with my tst box on, but it's not quite as severe as it was prior. Time for a modded pump....
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