You may be saying, wait a minute, didn't GIAC already have software available for the new S4's? And you would be correct. However, the 2013 models of the S4 and now the S5 utilize the Simos 8.51 ecu which required different programming than earlier models with the 3.0 TFSI supercharged V6 motor. This means ECU parts numbers that match 8K5907551C and 8K5907551E for the US Domestic Market can now be tuned.

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Gains are said to be up to 63 all wheel horsepower on 91 octane, impressive. A hand held map switcher is also available with pump, race, and valet modes. The tune and handheld map switcher retail for $1500.

Features:

* Improved wheel horsepower and torque gains at 65 - 70 HP & 30 - 35 Ft. / Lbs. of torque, on 91 octane fuel.
* Estimated wheel gains as high as 63 horsepower and 51 Ft. / Lbs. of torque in some areas of the power band (up to the OEM rev limiter of 6500 RPM).
* Properly recalibrated air/fuel ratios and maximized boost pressures.
* Improved throttle response for a drive-by-cable system feel.
* Raised speed limiters to factory redline in final drive gear
* Included stock, race and valet modes, in addition to a GIAC Handheld Program Switcher with purchase.


A dyno sheet from a stock 2013 Audi S5 after the software is below, well done GIAC:

Click here to enlarge

Click here to enlarge