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Yes, that 581 number was with JUST the stock components in the fuel system
as DTR Member rip 112 said, that being, STOCK CP-3, STOCK INJECTORS, STOCK IN-TANK FUEL PUMP. I do NOT have an aftermarket "pusher type" fuel pump yet (FASS, Raptor, Walboro) but am getting ready to put one in.

How did it do it? I don't know, but it did! At the end of the dyno run my fuel pressure was at about 2-3lbs and my rail pressure at about 15,000 but I thought both would be lower than that. I guess I got a good stock set-up. It showed me that it COULD be done, despite what I had heard to the contrary! With that being said, I am SURE ir is not good for the fuel system though.

Hope that helps to answer your question.

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John_P

 

I made 515hp before the injectors and turbo. I need to dyno again but it feels like I am dumping too much fuel before the turbo spools. Truck does not feel as snappy as before the turbo and injectors. The smoke on take off is unreal, could the converter have anything to do with this.