Walbro 460 in r32 gtr

[Butters]

The only logic and I know this is flawed to my staged pumps is the chance of detecting a pump failure. With both running all the time if one dies you won't know. With one primary if that dies you know, the second yes will be a mystery but at least you have a 50% chance ?

Either way though safeties are super important in dual setups.  I've wondered about putting an Amp meter on as extra safety but then you just should buy a PDM

 

[Murray_Calavera]

53 minutes ago, Butters said:

chance of detecting a pump failure

Your ECU's engine protection should pick this up easily. 

Just recently my ECU alerted me to lower then usual fuel pressure caused by a failing car battery. I'd be absolutely blown away if the ECU couldn't tell that you only had half the pumps you should have lol. 

[Dose Pipe Sutututu]

Injector pressure differential set, base pressure set, and let the ECU/engine protection do the work.

I'm assuming the ballers with MoTecs could even do closed loop fuel pump duty cycle to maintain pressure, where as the commoners on Haltechs need to just stick with a static table and engine protection to kill off torque when fuel pressure drops off 

[Predator1]

On 31/05/2024 at 12:00 AM, Butters said:

using a map with TPS and duty cycle with a slight delay on the off. 

The second pump only really needs to come on when flat out. 

Thats interesting.. Both my pumps are on at all times.

 

On 31/05/2024 at 9:15 AM, Dose Pipe Sutututu said:

Correct, I used to run 1x SSR for both pumps, but the inner OCD in me wanted 1x SSR per pump, so here we are  

Flyback diodes built into the harness

 

Here's my DC table

Exact setup as me, except I only have 1 SSR that drives both my pumps..Walbro 525's. This would be why my fuels heating up.

Wonder how much work it would be to add another SSR.