034Motorsport is proud to offer Performance DSG Software for B8/B8.5 Audi S4/S5 models equipped with the DL501 7-Speed S-tronic transmission! Flashed directly through your vehicle’s OBD-II port, 034Motorsport’s proprietary calibrations for the DL501 TCU safely and effectively raise the factory transmission's RPM limiter, increase shift speed, and optimize the shift points in Drive and Sport modes for better performance and driveability. The result is a noticeable improvement in acceleration, without any sacrifice in comfort or reliability. 034Motorsport's DL501 Performance Software was developed entirely in-house on 034Motorsport's Development B8 Audi S4. The calibrations were then refined on multiple enthusiast-owned B8/B8.5 Audi S4/S5 vehicles before release.