I had a digital 6 with a high end miss. Swapping in another box fixed the problem. I had MSD test it on Drag Week since I carried it as a spare and it would bridge a huge gap at massive RPM with no trouble, but in high gear it always cut out, swap in the other digital 6 and the problem was gone. The good digital 6 caught fire on me the next year on drag week and I had to swap it the high end miss box to finish the week.....so I am done with those lol.