Ok, I have now replaced both sides of the eng ign coil banks, and new plugs ($3000) to stop a cyl misfire that the shop said is being caused by the ign packs. No change. If I unplug the battery for 10 minutes, it runs perfectly for 5-10 minutes, then misses again. When it is running perfectly I can remove the injector plugs one at a time and the eng misses as it should, plug it back in and the eng runs smooth. Then out of the blue the eng light flashes, then it runs rough again. Problem is; with 12 cyl's I can't tell how many are dropping off line. I am scheduled to ge back to the shop tomorrow am. Any ideas?? The shop is good, the guys are smart, but everybody is stumped !!!! 48,000 miles only, never raced or driven hard. That is why I have the MV Agusta F4 1000.