Its that time again Ray, another of those general but somewhat specific questions that calls upon your knowledge of all things T.
The '91 Alltrac ignitor - intelligent or dumb? I'm using the Megasquirt to fire it with ~3ms dwell but its not happy and rev limits at 5.5Krpm.
Having read through the 2nd gen to 3rd gen conversions people have done, when they try to use a gen3 ECU and gen2 ignitor (mine) they have the same problem as me and require the gen 3 ignitor. This smacks of the signal from the ECU being "different" in some respect. I dont have a 205 ECU available to scope out. The only thing i can see, other than voltage of IGT signal, is the pulsewidth.
Any ideas?