FBO's black HEI ignition box

512Stroker said

Rat, I have been running one of Don's white boxes for three years.
It has performed very well, no issues, and I really like the rev limiter.

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I‘m sure they do work fine.

My problem is his claim they don’t retard with RPM.

My cheap *** isn’t going to buy one of his systems to test his claim, but if someone sends me one to test I will test it and video the entire test.

I say it does retard with RPM because they ALL do it.

As long as that is known and it’s accounted for it doesn’t really matter. But you have to know and account for it.