BT Changer is entirely a Hungarian development. The device is being developed by Viktor Babrian and Ákos Égő.
In addition to numerous projects, Viktor has been producing programmable engine control electronics (ETUN) for racing cars since 1999. Ákos feels more at home in the world of Saabs, among other things he is the founder and leader of the Saab 900 Club Hungary. Together with several colleagues, their first joint project began in 2007 with the development of E85 bioethanol converters (BioETUN). Unique on the market, they made an E85 converter for direct injection engines, and they also achieved significant success with the E85 injection for diesel vehicles (BiFUEL). Due to changes in the market situation, the E85 project is currently on hold.
From 2017, Viktor and Ákos reconsidered some of the more problematic Saab electrical units. They have their own mirror folding electronics for OG 9-5 and also make center brake light and rear LED strip retrofit electronics for new generation 9-5.
The BT Changer project began in the spring of 2022. Taking a new approach, the team first developed a Bluetooth audio adapter with CAN-BUS connectivity for older-generation Saab 9-3 and 9-5 vehicles. However, Bluetooth converters quickly became available for various Saab models, including the critical first-generation 9-3, which has a notoriously challenging audio expansion. By February 2025, the BT Changer Hands-Free mode was also completed.
Additionally, their goal is to manufacture reliable and professional Bluetooth modules not only for Saab but for other car brands as well.
