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'''Ignition (output, ignadv and dwell) page for MembersPage/EricN''' Note that trigger is on MembersPage/EricN/Trigger '''Even-fire 6-cyl''' '''LS1 coil near plug ignition transformers''' This is what I know so far: 4 wires per coil * 12v * ground * ground to the ecu * trigger wire Since there is only 1 "trigger wire", I assume this can only work with distributor. Maybe a 6-cyl wasted-spark coilpack off of a Ford or Chrysler or whatever worths considering (drawback is that it might prevent factory look). * Kind of lost me, but I assume if I was more specific and mentioned that LS1 coils are coil near plug type, this would make more sense and the above paragraph would not apply. (Factory look is eventually the goal, but for now, I want to practice on this engine the same setup that will be in my racecar when it is actually built, then I will revert back to more simplistic setup) I have done some various measurements on a running vehicle. Trigger is by a 4 Volt signal (I didn't check the trigger time but the scale was set to 1 second and it was just a vertical blip) that does not change at all with RPM. I suspect it is extremely low amp, logic level signal. '''How to output a logic-level ignition signal''' Use the same driver as the original IGBT is driven from, just solder a jumper wire in place of the IGBT (don't solder IGBT for given channels), between the gate and drain the 2 pins closest to the EC36 connector, and use ign_out=70 in your config /Emil We usually use ignition channel 2 and 5 for these (recent tradition, that assembled ECMs are setup with ign channel 2 and 5 this way unless ECM goes for V8 with COP: very handy when IgnitionPage/TransformerWithAmplifier is to be used), for 6-cyl with ignition module with logic level input you need a 3d logiclevel channel. MembersPage/MarcellGal/EngineSwap also uses similar logic-level ign setup for IgnitionPage/TransformerWithAmplifier * really lost now. I assume that is for a wasted spark type coil pack, again, if I mentioned coil near plug, I suspect the above paragraph wouldnt apply. I am a plug it in and figure out why it doesnt work kind of guy. I was just going to try and fire the ignition channels like the injectors and play with stuff untill it worked or melted. ---- '''Dwell''' - for LS1 ignition transformers I have measured dwell: * dwell length is around 59 degrees at all engine speeds and loads. * Duty cycle was at about 95%, stayed constant. Please correct the above, obviously there must be some misunderstanding as 59 degrees is not equal to 95%*120 crankdegrees. * I probably screwed it up. I stuck my Snap On Vantage wires on the trigger and the other on ground, ran the truck (v8) and changed between the different scales (dwell, duty, pulse width, voltage), I assume that is the wrong way todo it? - * Pulse width changed dramatically but if I understand it correctly: if either of the above (59 degrees or constant 95%) is true, that is natural consequence of engine speed ( pulse period decreasing as RPM increases)
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