Also many ignition boxes will retard the timing at higher RPM's and that is the reason for lost power not spark intensity.
Is this common with MSD's or you are talking about your cheaper systems Crane/Mallory boxes never herd before
A whole lot of people don’t know this or check this, or are capable of checking this.
Most modern EFI control boxes address this with a comp table. Usually only happens with mag sensors.
No way I would spend the money on a Digital 7 when there are much better and reliable options out there, and your current ignition is working fine.
Others opinions have merit, but I see no reason to dive in half way.
