Have you talked to Rich at FastManEFI? Rich has been running COP for at least 10 years on various cars. He probably has some boosted customers but I'm not sure about your level of boost.
Do you think it is an electrical issue? Just not enough amps available to fire the plugs with COP? Or do you think it is something else such as timing stability? I'd think COP would have some advantages but I guess it all depends on the details. With the amount of power you guys are building it would be difficult to run tests.
From what I am beginning to understand it's the decreased duration of the spark(as compared to our 48 amp mag) that somehow can cause a lazy condition at lower RPM's. This may not be true for every combination but it seems to be with ours'.
