GIAC Software is now available for all 2013+ MY Audi S6/S7 4.0T models!

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GIAC Software is now available for all 2013+ MY Audi S6/S7 4.0T models! New GIAC Software: GIAC software calibrations for the 2013+ Audi S6 equipped with a 4.0L biturbo V8 are now available! Our 4.0T ECU software is calibrated to offer dramatic improvements over the factory tune, with a complete ECU recalibration created to work […]

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