PIWIS 2 is the earlier version and has been widely used for Porsche diagnostics. It offers a range of functions such as reading and clearing fault codes, performing system tests, programming keys, and adapting control units. This tool has proven to be reliable and efficient for diagnosing and troubleshooting issues in Porsche 981 models. PIWIS 3 is the latest version and is considered to be more advanced in terms of functionality. It provides enhanced diagnostic capabilities, including the ability to perform advanced coding and programming, as well as access to additional control units and systems within the vehicle. PIWIS 3 also offers a more user-friendly interface and faster processing speed, allowing for quicker and more accurate diagnostics.

In terms of function-wise, PIWIS 3 is the better choice for a Porsche 981. With its advanced features and improved performance, it provides a more comprehensive and efficient diagnostic experience. However, it is important to note that PIWIS 3 may come at a higher cost compared to PIWIS 2, and it may require additional software updates and subscriptions to access the latest features and functions.https://www.autonumen.com/goods-7319-Porsche-Piwis-3-Plus-Panasonic-CF-MX5-Laptop.html

Ultimately, the choice between PIWIS 2 and PIWIS 3 depends on your specific needs and budget. If you require basic diagnostics and are on a tighter budget, PIWIS 2 may still be a reliable option. However, if you want access to the latest features and a more advanced diagnostic experience, PIWIS 3 would be the recommended choice. It is always advisable to consult with a professional or contact the manufacturer for guidance and recommendations based on your specific requirements.