alright yesterday I had a little help, and I found out that when you rev this new engine up to about 4-5k rpm, that not all of the exhaust is going out the pipe.... but more or less falling straight to the ground.... and going back up under the hood and getting sucked back in through the cold air intake. I believe I found the cause of my EGR problem.... does anyone know how to fix it? I'm not sure exactly were it's coming from, I'm too prissy to actually get on the ground and look. XD