knumcyl is a divisor and lower number of cylinders results in a higher value. Three cylinder is 96d or 60h.
knumcyl is a divisor and lower number of cylinders results in a higher value. Three cylinder is 96d or 60h.
Well gents I have never been able to stabilize the secondary computor. I finally abandoned the spark control and put an HEI dist with mechanically advanced spark. Starts and runs, first time every time.
Interesting to note. Are you talking about the AFR? Or the spark timing?
It's been a while since I read about the physical connections in this thread, but IIRC he was using one ECM for both spark and fuel and the second ECM for spark only. I can see how keeping the second ECM in sync would be an issue, especially where spark timing is so critical. fuel could literally be dumped in at pretty much any time, especially when it comes to TBI fueling and still run without a noticeable issue... *shrug*
The man who says something is impossible, is usually interrupted by the man doing it.
There secondary computor didnt have the ability to advance the spark 90 degrees even though the software would let you change the field to 89.65 degrees. The original schematic was incorrect. Only 1 ignition control module can be used. I could get 1 or 2 sparks out of the second computor then nothing. Changing cyl count to 3, and reducing fuel bpw to 137 resultd in 50% of required fuel. Using cyl count of 6 th fuel pulse of once per rev reduced fuel pulse to every other rev- 50% short. Fuel was still immaterial since I only had sprk on 1,3,5. Excellant excercise, project wasn t completed the way iI had hoped, but I have learned enough that I will never have a problem diagnosing Efi systems. Willys is running very well with 4.3 bin with bpw reduced to 137, havn t even logged it yet. That will come in time. Thanks for ll your help!
Craig
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