The Unitronic FLEX enabled ECU Software Suite is sold as a $500 add-on for the 2.5TFSI EVO (DAZA) platform. After a you purchase this separate add-on, Unitronic FLEX enabled files will be made available for you up until the highest purchased ECU Software stage. If for example you upgrade from Stage 1 to Stage 3 on the ECU side, you will NOT need to purchase the FLEX add-on again in order to move up to one of Unitronic's Stage 3 FLEX enabled ECU calibrations.* AVAILABLE FLEX ENABLED ECU FILES • Stage 1 91 FLEX - Calibrated for use with 91 octane -> E85• Stage 1+ 93 FLEX - Calibrated for use with 93 octane -> E85• Stage 2 91 FLEX - Calibrated for use with 91 octane -> E85• Stage 2 93 FLEX - Calibrated for use with 93 octane -> E85• Stage 3 IMS750HS 91 FLEX - Calibrated for use with 91 octane -> E85• Stage 3 IMS750HS 93 FLEX - Calibrated for use with 93 octane -> E85• Stage 3 TTE700 91 FLEX - Calibrated for use with 91 octane -> E85• Stage 3 TTE700 93 FLEX - Calibrated for use with 93 octane -> E85• Stage 3 TTE777 91 FLEX - Calibrated for use with 91 octane -> E85• Stage 3 TTE777 93 FLEX - Calibrated for use with 93 octane -> E85 Unitronic's Flex ECU Software Suite makes it easy to take advantage of increased performance with its plug-n-play harness and integrated Bluetooth® connectivity. Now with added features such as Waste Gate Rattle Fix and Rolling Anti Lag CAN integration of ethanol content data, your ride has never been smoother. ***This is not a physical product and you will be emailed with instructions after your order with any access code necessary***
