The black box next to the ECU.
 

Hey guys, I was wondering what does the black box to the left of the computer do? I noticed yesterday, when doing my carpet and insulation. there were 2 plugs unplugged. I wonder if that helped make him run better by plugging them back in. It seemed he ran better after he warmed up. But he still has that stuttering problem. Anyway I am going to try and look in my FSM to see what it's purpose is. Any info and or feedback would be appreciated. :D Thanks :)

Never mind I found out what it was. It was the tail stop light sensor. Nothing to do with the car running. :( I was hoping it did. Oh well I will wait until Monday or Tuesday for my other dizzy. Thanks! :D