My mechanic just installed the Power Wire on my 5.9 and all I can say is awesome. I wasn't expecting much from this mod, but what a difference it has made with performance even after my current mods ( headers, intake, Superchip, Fastman throttle body, exhaust, and 4:56 gears ). It is definitely a lot peppier across the power band and it seems my truck is a lot quicker off the line. It's no placebo effect. Definitely recommend this mod to all, especially to the owners of 2000-2001 5.9 Rams since some people believe that the Power Wire is only for 3rd generation Rams. Extremely impressed and happy with this inexpensive mod. Thanks Air Ram for this wonderful product. By the way, JD770 and JWM1986 thumbs up with the Power Wire. You both won't be disappointed.