My car was running good for about 600 miles and then it got a little wet outside with rain and I had to drive it, and now it has a miss. I am still running an open exhaust and my friend at work says thats the reason why its doing that, but I can't understand why it would just start acting up at 600 miles into it. I am thinking that it might be the intake elbow because if it isn't connected on my car, it won't start. I know that the bottom of the rubber elbow isn't perfectly onb the throttle body so is it possible that the elbow might be the cause of this problem?