2006 stage 3 roush ignition issues
I'm new to this and I'm looking for some advice. I have a 2006 500rc roush f150 and I've ran into what appears to be some major software issues with my ignition. It all started with your typical cylinder 5 and 6 misfire with the occasional primary ignition coil failure. I replaced all 8 plugs with the roush house brand and 5&6 coil boots. Ran worse. Then replaced all 8 coils with 45000 volt granatelli coils. Nearly inoperable now. The issue is in the pcm. Live stream testing indicated the ground tics were eratic, causing random misfires. The hardware tests solid, no wiring issues. How can I solve this issue? New pcm, pcm flash, or possibly a handheld programmer such as an edge (if it were non motorcraft components causing this would a program negate the stock tune to run with my new components)? Or should I go with my most dreaded option and go back to step one with new motorcraft basic hardware and see if that solves the software issue.