This program makes me feel real dumb at times... but are these the files you wanted me to post? These are the pids that I made for the vve logging when I started the tutorial. I dont have another calc_pids file in the config cause I replaced the original with the one I got from you. I also posted a log of the up and down afrs I am getting (Ithought at idle) throughout my rpms. I brought the car in to gm last year and they said they looked over everything and thought maybe it was just a bad tank of gas but it never went away. I also thought it was maybe from my long tube headers and high flow cats but the car has run like this since I bought it as far as I can remember. I did recently try and clear the ethanol readings, and the fuel trims to see if the computer would relearn a better way to idle lol. But like I said the random anoying flutter is gone