MPi distributor... bear with me...

[Dustinicus]

I know that when it comes to injectors the biggest thing is the fuel pressure and pulse width... an engine running at 2500 RPM will have a longer pulse width than one running at 1500 RPM... What if you used 2 Distributors, one TBI and one MPI, made the toothed pick up wheel have only 1 or 2 teeth directly opposite each other, using the TBI comp run the TBI wheel in there also with one pick up reading the correct spart timeing, and the second 1 or 2 tooth wheel get signals that tell the injectors to work.... This is one road block that I first came acrossed; Pulse width, thats where the TBi comp comes into play (I dont have a working MPI harness and comp combo and cant afford to get one since im going with megasquirt eventually anyway), using the pickup sensor that reads the 1 or 2 tooth wheel, make it act as a switch that sends a signal to a switch board that will cycle between the injectors as the tooth passes bye the sensors... If any one wants to see my diagram/picture just let me know, if it works out right, it would be a simple standalone thats uses nothing but stock electronics...

Dustin

[xrattiracer]

what exactly are you trying to accomplish? trying to come up with the most unusual way to avoid doing things the right way (paying for a custom cal)?

[Dez]

Go for it, let us know how it turns out for you.

Good luck

[Dustinicus]

while im waiting for my engine hoist i thought i would mess around with some parts that im getting rid of anyway, besides I am mostly interested in the curcuitry wiring... The part about the automatic switch for the injector signal, any one know anything??

Dustin

[xrattiracer]

yes, but there is no point to this discussion.

[Dustinicus]

The point to this discussion is to try and find anyone here that may have more wiring knowledge than I do so that i can find some kind of circuit that will switch between 2 different wire leads to give signal for the injectors, I know that there are alot of other things to do that would make more sence, but right now im jsut looking for a switch circuit, thats all; and i figured that some one in this area of the forum would know something about wiring, and since the ECM is electrical circuitry then mabye some one would have a lead where i could find a simple automatic switch: it just needs to go... 1 'signal' -then - 'switch' - 2 'signal' - then - 'switch' - 1 .... and so on, something that could handle being switched between quickly and rapidly for long periods of time

-Dustin