71 Duster 360 turbo build

[TT5.9mag]

I’ve used adjustable rising rate fuel regulators or FMU’s in the past on old turbo dodges with limited tuning options. A 2:1 rising rate regulator would be pretty cool.

I remember those. I used a 12:1 FMU to run boost on a 5.0 Ford with stock injectors before we could tune em, or had the availability of injectors and pumps we have now.

 

[85glht]

Believe me I WANTED to setup my car that way, but I also wanted high quality injectors. $2500 for ID1700’s is a tough pill to swallow. I can also honestly say I did not realize I would need so much fuel system. I used fuel injector calculators that say what I have should support 1000hp, but that’s clearly not the case.

Right now I think my best bet is to dilute from e80 down to e60 to see how much room that gives me. I’m currently aiming for 25+ psi boost so that may still not be enough fuel. After that I can also increase my fuel base pressure to get 1400ish cc from these same injectors(I ran ID injectors at 90psi base on my wrx), but I’m not sure how far my pumps will take me. I can add a 3rd 380lph pump very easily(already have a spare), but at that point I’m running a total of 4 fuel pumps pulling 50ish amps. I think the battery can handle that for 9 seconds but I’m not sure. Bosch 220’s may be the easiest fix. We’ll see

I've ran into issues running multiple pumps with my GLH. One pump could not keep up with the other resulting in the engine starving for fuel. Just my opinion but I would try one big pump