Since i put in the Overkill pcm about 3 weeks ago, my car kind of stutters right before 2-3 shift only from 5.5-6k rpm (yellow area) pulls fine up until that point. Also 1st gear pulls fine until 6000 and shifts fine there, problem is only with 2nd. Before the pcm, the car obv shifted at 5.5k so i don't know if the problem would have happened before pcm install or not. Any ideas?