xHP is the worldwide first and complete tuning solution for your BMW M2, M3, and M4. Including support for ZF 6HP automatic transmission, ZF HHP, and 7-Speed CTC.
Since introduction of the ZF 6HP transmissions in BMW vehicles in the early 2000s they remained a blackbox for calibrators.
While the ZF units have been tuned for many years now in other vehicles, BMW applied intense encryption and signature mechanisms to avoid calibrators from so.
While this is understandable from a manufacturers perspective, it does not satisfy the needs of BMW enthusiasts worldwide.