Hi all, just have a quick question for all of you. For my rx7 I went with a anti swirl tank setup for the track with dual 044 and a denso in stock tank. link here Integrated Engineering Submerged Dual 044 Billet Surge Tank WITH PUMPS
Is there any way to have a fail safe to tell if one 044 stop working like a pressure switch and run them to the ecu to cut boost or power done to save motor and maybe run a wire to a little warning light to let me know. Idk if I'm over thinking the whole deal or not but say if one stops and i have a fp gauge it wont drop down to let me know? Any input would be great!

 

Do the two fuel pumps feed into one line, and if so, is there a check valve between each pump and the Y fitting?

I saw the manifold on their site that goes at right angles to the pump exit... I don't know if that's the best for flow but hey I haven't measured it!

If there is a check valve on each pump before the Y fitting, then you could fit a pressure switch or pressure sensor before each check valve.

If there are no check valves, then there's no way to tell from pressure if only one pump is working, because you'll see the same pressure at the 2nd pump (they're all connected together - Archimedes principle).

So the only way you'd know is if either you could measure the flow somehow, or because the pressure drops off earlier than it should.

In the second case (ie the pressure dropping off), that's something I'm working on now, to be able to put that into the ECU so it cuts the boost and goes into ignition cut if the fuel pressure drops off - for that you'll need to add an Innovate SSI-4 4-channel 0-5V input box (connects via serial to the ECU) and a 0-5V pressure sensor (I think they're about $170 - Digikey have them).

But that will only tell you once it becomes a problem. If you want to know before, then we need two pressure sensors and two check valves.

Stay tuned for the software update to make it happen.

Thanks!
Andy

 

thanks andy, yes the bosch 044 have check valves and with the integrated setup it keeps the a check valves in place. That was my idea to add a pressure sensor before check valve and run the two to the ecu so if one fails the ecu would know right away and cut boost down so don't hurt the motor. If your coming out with the software I could just get the stuff need since in the middle of my build right now.

 

Yes, I'd say put in the sensors now if you can find a way to install it before the check valve.

Sorry for the delay!