I Run A Distributor. No Waste Spark Means Lower Egts.
It Is Not An Igntion Improvement By Any Means It Is
A Step Backwards.the Horsepower Gain Is Acheived
By A More Aggressive Tune-up. This Has Been Proven On The Dyno.
Waste Spark Ignites Un Burned Fuel In The Off Stroke Cylinder
Raising The Cylinder Temperature. The Best System For Sure Is
Cop Accurate Less Mechanical Parts And One Sequential Spark.
If that were true about the waste spark actually igniting whatever unvaporized, non compressed air/fuel mixture there is in the exhausting cylinder, I would be in a heap of trouble with intake backfiring. With my setup, the waste spark is going off while my exhaust and intake valves are open. No backfiring. On top of that, I use nitrous which makes it an even more volatile situation. Again, no intake backfiring. I'm running a comparatively high overlap cam.
My EGTs are not out of line for an alcohol engine.
The waste spark system has not kept me from running whatever ignition timing strategy I choose.
I agree about the COP system. The only drawback that I see to the COP system is the complexity. At least, compared to w/s. More expensive components to fail. Instead of worrying about 3 coils, you're worrying about six. And finding the room to hang 6 coils.