NEW AD20 AD20 covers all OBD2 functions of ELM327 Bluetooth and AD10, but also adds engine diagnosis and other extended functions AD20 Features 1.HUD function:AD20 supports HUD function and you can replace exquisite instrument styles online 2. Driving Records& Analysis:AD20 supports driving records and driving analysis, each driving data will record and analyze the fuel consumption, distance, and some driving behaviors during driving. 3.Performance Test :AD20 supports the performance test of the car, you can see some values and performance of the car through the acceleration of 100 meters 4.Engine Diagnosis:check engine light on and engine code reading/detect code 5. Analyze Error Codes:AD20 can read and clear the error code of OBD2 ,then analyze these error codes will let you konw what causes and how to solve it now 6.Free Update: The latest Bluetooth 5.0, supports Android and IOS. AD20 software is independently developed by XTOOL,the software is free updated 7.Hihg Quality:AD20 Full Pin High-quality chips and shells are tested repeatedly before delivery, and various problems can be solved through hardware and software upgrades. AD20 Full Engine Diagnostic