NEW AD20 AD20 supports all OBD2 functions of ELM327 Bluetooth and AD10, including engine diagnosis and additional extended features. AD20 Features 1. HUD Function: AD20 supports HUD functionality, allowing you to change instrument panel styles online. 2. Driving Records & Analysis: AD20 records and analyzes driving data, including fuel consumption, distance, and driving behaviors for each trip. 3. Performance Test: AD20 enables car performance testing, providing acceleration metrics such as 0-100 meter performance values. 4. Engine Diagnosis: Check engine light activation and read engine fault codes. 5. Error Code Analysis: AD20 can read and clear OBD2 error codes, then analyze them to identify causes and potential solutions. 6. Free Update: Equipped with Bluetooth 5.0, compatible with Android and iOS devices. The AD20 software is independently developed and receives free updates. 7. High Quality: Built with full-pin high-quality chips and durable housing, tested thoroughly before delivery. Supports hardware and software upgrades for improved functionality. Full engine diagnostic capabilities.