Not sure if this is any help, but may be related. My '05 SRT6 often starts with a miss. After I drive for a minute or two, I stop, turn off and back on - the miss is gone and she runs smooth as silk. This happens with such regularity I think it must be something others have recognized. I spent a few thousand chasing a misfire, changing plugs and coils (good idea fior new owner anyhow) only to eventually see it as this. I think there must be a fault and then a re-set in the ECU or something like that.
Am I ringing any bells? Anyone have a similar condition?
Crow13