the blue blur...
sct is the equivalent of a "super" superchips....way better as you can have someone custom tune your truck specifically for what your mods are and can store them and change programs based on what you want. alot more possibilty's than just a regular handheld, and the different tunes are basically limitless as far as upgrading. you will need a wideband if you ever go blown or get sct, or both. its essential for data-logging so that your tuner knows exactly what tune you need.