just hoping someone has had this problem and what did you find the problem was.i have had a miss only at hard throttle in the lower gears then it clears and runs fine.To try and fix things i got new tubes and sent the injectors off for a rebuild still the same problem.So i took the smarty off put the stock tune back and no miss.If the problem is in the smarty how do you fix that i downloaded the new softwear will try that today. If i still have trouble what else should i look for.