These are the hardware components needed to read/write your ECM/TCM. You will need to select the proper number of credits that are required to flash each vehicle, and please keep in mind the credits added to the interface are not transferable. Tune and tune updates are extra, and this only partially refundable. If you select the interface only when the complete interface and all physical components are returned and undamaged we will refund you $275, if you select the laptop add on option it would be $500. (within 30 days of shipment) Returns over 30 days can only be converted to in store credit. You are not required to return it, you can keep the interface if you want to continue to tune and scan your vehicle.
See HPTuners website for how many credits your specific car will need. Most cars only require 2, but when it hits around 2016+, a lot of cars require 4 or 8 credits.