Swirl Flap delete Upgrade is only the software only, this will remove activation structures and fault codes from the ecu software. This makes the ECU (engine control unit) not look for these structures or fault codes in relation to the Swirl Flaps. Once this software is applied the Swirl Flap system will not continue to function unless the vehicle is returned to Stock/Original.
Please check if your car is compatible with this Upgrade.