From what has been explained to me, it makes your ignition easy to adjust. Just like the power commander does for your fuel. Dont have a TRE? This will do the job. Looking at a quick shifter, these are also nice. But unless you are doing quite a bit of modding i wouldnt say its a necessity.
Im doing all the moding that my pocket can handle! LOL I slid my baby into a field a couple of months ago and that costed me about 800 in cosmetics to get her look'n sexy again. But im just looking to see what my next mod should be.