Mine is megasquirted, and I was triggering off the dizzy and controlling fuel and spark. As I tuned and drove, it would seem better, then worse, better then worse. I was advised that triggering off the dizzy with the centrifugal advance still active ( I was trying to use MS to fudge in a little vacuum advance, but let the dizzy do the mechanical) would wreak havoc on the timing prediction algorithm.
So I then added a trigger wheel on the crank that masked the problem for another 500 miles, until the dizzy was jumping around enough to hit the wrong cylinder at high RPMs. I scratched my head over this one for another 100 miles until it jumped time and wouldn't start.
I lost the entire gear in the pan. I replaced the
oil pump, but after disassembling the old one, it looked fine with only a tiny minor mark here and there. I never saw a drop in
oil pressure so I guess the bearings are OK.
It's better to fix it and move on... just share your experience and help dink their market share. Honestly, the real problem is in the documentation... or lack of. Had the engine came with a build sheet, I would not have changed the iron gear that came on the new MDS dizzy for a steel one and all would be well. Instead, 2 months after my engine was delivered, I had to look on Ford Racing's website and see somewhere "billet roller cam"