yes but the idea I tried to implicitly make is that it can be done quite simply without requiring fancy ecu control, variable pump speeds or anything we don't already have

 

Saw the deadhead setup from drawing I first posted, this weekend, at Formula Drift, on the KMR 1300hp 3 rotor Miata.

Works flawlessly.

Regulator is mounted right above fuel cell in trunk. Pressure sensor reads right off of regulator. Vaccuum line from engine to regulator in trunk. Only one feed line to engine. Rails capped off on ends. No ecu control etc that some people have been talking of. Just staged pumps.

No fuel heat and very simplistic. I'll be switching soon.

 

Nice, David! I hope the other link I sent you worked out too. Simplicity is underrated. If you find you need them to be controlled by boost, the tried and true method is a Hobb's Switch setup at various pressures to signal (NOT POWER) the next pump as a higher boost pressure is reached.

I think 3x of those Walbro 450s are a good choice for your build. One thing that I'm worried about is the fuel damper (since I don't remember what you're doing for it), and I would suggest one Radium XR per fuel rail.

Fuel Pulse Damper, Direct Mount Kits

 

haha hahahaha hahahaha

Simplicity is underrated...coming from you?????

Now tell me Ryan, who taught you that about simplicity???

Skeese

 

Why doesn't Haltech have a 3500 with 3x the amount of IO?

 

2500 and a REM or an IO12A and IO12B. I need all those inputs. Honest.

If this is Kyle Mohan's car I'm glad he didn't pop his engine again. I'm not sure what his issues were the last 2 times out, here's to hoping it wasn't a fuel pressure/distribution issue!

 

Thats a ton of expansion lol

center bearing issue was the engine failure, car ran great at the ATL event. Car is absolutely insane. I can't imagine 40psi after driving a 20b at 15psi!