Well, i got my truck about a month ago and did some searching on here and the result was i ended up with banks air intake, magnaflow turbo back, and ppe programmer. The truck feels and sounds amazing i never thought that this truck can get up and go this fast o and its only on level 3 kinda scared to go any higher due to the tranny as i've read on here that its somewhat weak after 400+rwhp?? This is my first diesel so i really don't know so if anyone has any suggestions just let me know. I want to thank Dan at PPE for the prompt turn around of the programmer and Chad at Alligator Performance for the great prices shared with me and for the info past on to a newbie. Thanks again to everyone here as well. Btw with these mods that i have what is the rwhp that i should be at more or less?