Hello all, my name is Mike and this is my first time at DD. I am also a first time Duramax owner myself. My 20yr. old son bought a 03 LB7 a couple years ago and I fell in love with it. A few weeks ago, my wife bought me (yes she did) an 07 Crew cab short bed LBZ and I just love it. I am looking at learning how to tune these monsters with EFI Live. I will need alot of help I'm sure.