This kit has was released in 2012 and has been working great! It works with most turbo kits and I am working with some of the ones it does not fit with to see if they will make some changes so it will. You will see improved bottom end response (like you geared down 2 ratio) and more top end (like you geared up one ratio). the kit save 5 lb and over 3 lb of rotating mass. No more oil changes or maintenance.
** NOTE: MODIFICATIONS FOR THE BATTERY MOUNT REQUIRED FOR ELECTRIC START MODELS AND WILL NOT WORK WITH THE STOCK MUFFLER.