A fresh 3.0, twin plug, crank fire, 12.0 to 1.0, 110 fuel, MFI engine, my best engine that I had just freshened up. Felt very strong for the first few laps and then began to deterioate. By the time I pulled into the pits she was missfiring. 3 cylinders involved, #s 1,3 and 4. #1 being the one most effected. The injectors all spray well and I had the pump on my test bench right before installing it. My ignition is Electromotive XDi and timed at 22,7 and 1 degree giving me 30 total. Running this system for 4-5 years with no issues. I noticed that the headbolts had loosened a bit, but I have experienced that on other rebuilds right after the initial outing. I have to think something has gone south in the ignition box. Any thoughts. Thanks,
