Thanks for the link. This is of course for recording a misfire, normally the lack of a spark but it was interesting to read that the misfire appears to be initiated by crankshaft rotational speed variations not only due to the unburned fuel or hydrocarbons. "The camshaft position sensor is used to identify misfiring cylinders and the crankshaft position sensor is used to measure variations in the crankshaft rotation speed. The misfire counter increments when crankshaft rotation speed variations exceed threshold values."
So this will also be a key item to ensure is addressed.
I will be disconnecting one of the fuel injectors and placing a 10K resistor across the two pins in the harness in an effort to fool the ECM into thinking the fuel injector is still there. I will work my way towards 100 ohms but will stop at the highest value which the ECM recognized the fuel injector as being present. I am hoping a 1K resistor is as low as I have to go.
After that we will have to see if the misfire is actually recorded. My plan is to turn off fuel injectors in a rotational pattern only for predetermined requirements such as load on the engine and engine speed. Heavy load disables the circuit or a bypass switch of course.
I'm doing this because of the minimal heavy use on my truck and fuel costs and most important, I need a new project to keep me busy. I don't that even if I'm successfull in fooling the engine that I will save fuel. I quite possibly could end up using more over normal driving.
Now time to find a high speed high power (400Hz 10AMP) SPDT electronic relay that doesn't cost me a ton of money since I'll need 6 of them for the final prototype.
Thanks for the info,