CA18DET & Denso MDL560P (Evo 560cc Injectors)

[levelone]

Good evening everybody, this is my first post here and i would like to begin with a big thumbs up to Matt and everybody involved in this amazing piece of hardware and software. Hello to the community as well!

I have a fully forged CA18DET with the following specs.

- Supertech 84mm (40 thou) pistons
- ZRP Connecting Rods
- ARP head, main bolts
- Cometic Gasket
- Garrett GT2860RS turbocharger
- Genuine and properly working Z32 AFM
- Denso MDL560P 560cc Evo injectors (pink ones)
- Walbro 255lph fuel pump
- Stock fuel pressure regulator (36 psi).

What i am trying to find out, is if anyone is using these injectors for their engine so i can get a "in the ball park" K Value.
I have been able to retrieve the specs of the injectors which are as follows:

Code: Select all

Denso MDL560P
Low Impedance, Mitsubishi Evolution VIII
 
.62ms @ 13.8v @ 38psi
1.03ms @ 8.66v @ 38psi

Battery voltage correction: .08ms/v
.76ms @ 13.8v @ 38psi w/DSM injector resistor (6 ohms)
1.28ms @ 8.66v @ 38psi w/DSM injector resistor (6 ohms)

Battery voltage correction: .10ms/v
Flow rate: 520cc @ 38psi
Tests on the Evo VIII injector were performed at 38psi and with a DSM injector ballast resistor to accurately represent the injector operating environment when swapped into the DSM platform.

So i can safely assume that the latency needs to be 620μs (though NIStune wants the latency @ 14V i think this value is in par).

However, i seem to have hit a sweet spot at K Constant of 270. I would like some feedback on this one if possible so i can have a rough estimate.

Every opinion counts, thanks in advance!
Greetings from Greece

[skylinegtrhr]

Did You modified VQ map?
Here You can find some more info about this prblem louiswun did great job on CA ECU:

viewtopic.php?f=12&t=1911&p=13385#p13385