Originally posted by shiv:
TO RUN 8 TO 10 PSI (est. 280-300HP)===>
1) INSTALL AUXILLARY RISING RATE FUEL PRESSURE REGULATOR
Hmmm... the only unit I know of that does this is offered by Bell Engineering (San Antonio, TX). They make a number of FPRs-- all designed to work differently. The one that I'm using on my car has no spring pre-load and is designed for modified OEM turbo cars. Suprisingly, it's not a big seller because not many people know about it. I should have kept it to myself But the unit works wonderfully because it is designed to become active only at 8psi and above. Below that boost threshold, it is just sitting pretty, letting the very effective S-AFC do all the fuel-related work. In other words, it doesn't screw anything up. This is good. But as soon as the injectors begin to max out at 8psi, it "jumps in" and raises fuel pressure agressively (5:1). To make things easier to visualize, here's a little chart of turbo boost and its associated fuel pressure.
Shiv, can you explain how you hook up 2 FPRs? (if that is what you did) And how they work with each other?
Also do you have a part number for that Bell FPR?