This product is for people with our ZZP turbo kit which already comes with a ZZP tune using CBMs tuning interface.  You must already have this to purchase this update.  This is only for people that make changes to the setup and it requires a retune, for example, changing boost level, injector size, switching from E85 to gas and visa versa.  Your ECM must be sent in for the file update.  Contact customerservice@ZZPerformance.com for more details.