using a 255 pump and stock lines how much
power increase has someone made getting the fuel
from the fuel rail ??? BTW motor made 320 rwhp
no bottle.

 

are you asking how big of a shot has some one ran using the fuel rail? or how big of a shot can you run without using the fuel rail?

 

depends on fuel pressure, keep running more and more until the fuel pressure safety switch shuts it off. IIRC around a 175 shot, I'd have a dedicated fuel system for sure though.

 

i assume you mean a fuel pressure switch
after the fuel rail before the solenoid ...
ain't got one ...
4 fogger nozzles w/ .018 F & .030 N jets

 

I have the 5151 kit pulling fuel from the rail and my fuel pressure doesn't drop on a 175 shot. I also have the hot wire kit. With as much as I've had to jet down the fuel side to stay above 10:1 afr I wouldn't think fuel delivery would be a problem with the stock rails. I'm going to spray the 225 shot soon(.083 nitrous jet?), I'll let you know what happens.