He doesn't know what PWM means.
An FP ECU (fuel pump controller) is not a feature of Speeduino at this time. A FPC may be created stand-alone, or coded into Speeduino, or purchased aftermarket. To verify we are on the same topic, an FPC may:
Have you looked at this?
@Jochem - there are many uses for FPCs, and your example is common, as are several other needs. In your case, @dazq offered a reasonably-priced minimal unit for fixed pressure control that may do the job for you. More specifics on your use and setup would allow more specific suggestions for design.
True that, but there are many reasons for using PWM pump control, as we see here from time-to-time. Likely the one of the most common with users here is vehicles with small or non-existent charging systems. Drag racers, motorcycles, scooters, ATVs, etc. In these cases the fuel system is typically regulated by an inline fuel pressure regulator, bypassing excess pump flow when not needed.moonie223 wrote: ↑Wed Aug 19, 2020 8:19 amPretty much all fords from like 96+ have a FPDM. It's a PWM multiplying fuel pump driver that can switch like 20A.
You can have a returnless fuel system, you just need to mount the pressure regulator in the tank and have it atmospheric referenced. That's how all NB miata work from the factory in the USA, and they can all be tuned just fine without advanced fuel pump control.
Only reason anyone working with these levels of standalones should be messing with PWMing a pump is to ...
Yes, I stummbled upon this site before. This seems most interesting at this point since I hardly need to modifiy anthing, just putting the FPC between Pump and ECU....Have you looked at this?
The general question is if there is advantage to varying fuel pressure to MAP. In your case, it is running well and apparently has reasonable control of the injectors across the full range, so adding MAP reference may or may not help. MAP-referenced tends to provide a "flatter" fueling table as pressure differential is maintained, but do you need that?. It would not appear to be required in this project, so at this point, my perspective is to not complicate more than necessary to reach the goals. Your perspective may be different.
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