The misfiring has become more pronounced, perhaps because the weather has been changing. There are times when it misfires then it's like I loose all timing advance and the AFRs go all over the place. Usually this is when I am cruising on the freeway. AFRs before it happens are 14.7:1 and I am not modifying timing at all. Turning the key off and on again does not fix this however unplugging and plugging the SMT6 back in again does. Then it works for 5-10 minutes until it does it again. Still not positive what is causing it so I put the stock injectors back in and bypassed the SMT6. It runs great again now so I will try the SMT6 set to zero across the board again and see if I can reproduce it without any tuning parameters to confuse the issue.
Weasy2k, I thought that might be the case so I pulled a 12 gauge wire right from the terminal in the engine bay box and also attached the ground right to the chassis. It still does it though. I noticed that sometimes when this would happen that the RPM would no longer show up in the tuning software until I replugged in the SMT6 connector. Maybe it is a bad connection somewhere inside the SMT6 or one of the pins on the connector? My tach dips when it misfires so I'm thinking it's the ignition signal that is being interrupted. It works fine with the bypass board in place so at this point I don't think it's my wiring.
