No difference for what you will be using it for.
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No difference for what you will be using it for.
Hi,
as the others said injectors appear to be commonly driven by the switching of a negative to the injector. Taking that signal can be done, ive done it on my Audi from all 6 injectors for the purpose of driving a separate injector into the manofold directly after the butterfly, injecting h20 thru that injector on each injector cycle, length and speed. So i simply made a 6 input "or" gate using pnp transistors and combined the output to switch the output stage.
So because the negative is switched, i required a positive trigger pulse for the duration of the injector signal, see attached diagram. R1 and r2 setup base resistor current bias for the 557, D1 protects any spike from the injector from overvolting the base emitter junction, on the output side at the collector, the led and resistor are optional. This will give you a means to obtain an injector signal that should not interfere with the output stage of the ecu driving the injectors..but do at your own risk.
Owen, maybe you should try using a MOC or opto isolator. Connecting one lead to the signal via a resistor and the output side (Transistor) could be connected to a NE555 or a high current transistor for yor cell
This might be closer to what everyone is looking for:
http://hodinfo.com/forum/topics/smar...bd-ii-vehicles
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Use a prototype micro controller. Steal the signal from the injectors and program the micro control to adjust what ever you want. I used a micro control to build my own fuel management system.