Upgrade your current Unitronic Software and benefit from huge savings as an existing Unitronic customer with our Unitronic Stage Upgrade for your vehicle.  Simply select your current tune as well as the tune which you intend to upgrade to.  Please refer to the individual Unitronic tunes listed on the 8V S3 2.0T product page to obtains more details about your desired stage. This vehicle has added support through UniCONNECT+ which allows you to program your own vehicle right in your own garage.  Unitronic software is flashed directly through the (OBDII) diagnostic port of your vehicle (10-15 minutes). Features: Upgrade to any stage as an existing Unitronic customers Massive savings for existing Unitronic customers Engineered with Strict Industry Standards End-User Programmable with UniCONNECT+ What's Included: Unitronic ECU Tune Stage Upgrade Unitronic UniCONNECT+ Cable (OPTIONAL)