Fangrui Product Details Suitable For Most American, European, Japanese, For G-m Benzine Vehicles The Product Is Our Most Powerful Dynamic Soft-flasher. Operating At 20mhz With Plenty Of Flash Memory, The Offers Extended Compatibility And Faster Patching For Higher, More Consistent Gains The Product Is A Vehicle Specific, Custom Programmed 20mhz Microcontroller. It Utilizes Its High Speed Serial Input/output To Communicate Directly With The Ecu Through The Obd-ii Port 1.v-p12 Is A Truly Play-ready,vp-12 Is Simple To Install, Plug And Play, Without Any Hardware Modification And Modification, When No Longer In Use, You Can Unplug And Restore The Your Car At Any Time. 2.varm Reminder:in Order To Ensure The Effect, Please Install Accor Ding To The Order Of The Tutorial,hot Car - Turn Off - In Sert The Device - Press The Reset- And So On 2 -5 Minutes After The Completion, If Not Clear, Please Contact Customer Service. 3.led Indicator,the Vp12 Is An Intelligent Plug-in Computer, It Will Collect Vehicle Data, Generate Special Caspecif