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Yes I can

github.com/Greatwrk/VP44-EXPLORER

Closed source.

The solenoid is about 0.3 ohms so it's the amperage that matters. Full battery voltage is applied for 500 to 800 microseconds depends on battery voltage less time at 14 volts more time at 10 volts. During the rest of the injection duration the amps are reduced to 10 amps. You need to make a programmable constant current source. Power dissipation will be high.

I've been thinking about open sourcing my project because there probably isn't much money to be made the Vp trucks are pretty much obsolete now. I've not decided yet I have a lot of time invested, years. If you have info on the VP CAN bus messages/ decoding please share.

@@raym5562What’s a good way to get ahold of you? I tried putting an e mail up but it’s getting taken down I think. Have some info that might help.

I have too send a email... No answer... I want buy informations for use fixe 800 rom /1500 RPM signal. Regards

It's all about prediction. The solenoid has mass and inertia so it takes some deadtime between current flow and injection about 650 to 1000 microseconds depends on battery voltage so it needs to be energized before the 19 th tooth edge of the B signal happens. That means the 19th edge time in the future must be predicted from the trend of the teeth that are passing and have passed by the sensor. Use a timer with capture and compare to measure the tooth periods and set a compare to trigger a driver mosfet at the predicted 19th tooth time minus the deadtime. Google kinematic equations see some examples like how long for the airplane to stop on the runway. To make the math easier on the controller instead of velocity equals degrees per second think >> how many microseconds did it take for the engine to rotate 6 degrees. That's the spacing of the tooth wheel from high to high transition or low to low You need to master timer peripherals and interrupt code. Add a hardware fail safe circuit that times out after about 200 milliseconds if there is current flow in the solenoid and trips a power relay off. Remember buggy software or shorted driver = cooked solenoid.

mopar1973man.com/topic/19095-diy-vp-44-and-ecm-it-runs-very-happy/ this post has some timing diagrams and useful wave forms. View all 3 pages. Be careful the fuel solenoid is about 0.3 ohms and 250 micro Henry. It will burn out in seconds if left on at full current.

@@raym5562 that amazing man ill have aread over and get back to you ! would love to compare notes at some point on the differences with my motor being a lot smaller would be cool. Keep up the work man, thanks!!

holy shit that that is an amazing looking pcb you have made thats lot more professional than what im doing !

I loaded a video to make an opto isolate and duplicator so you can parallel run your own control of the solenoids

@@raym5562 thank man your been an amazing help, about to call it a night but will have a proper study over it tomorrow would love to have you opion on htis project and maybe some other projects along the line especially the reseach project for my master project involing an open source digital hydraulic valve train!

Runs better than expected. I think it's going to need a larger heatsink

@@raym5562 you can never overdo a heat sink