GIAC is proud to announce OBD flashing for most Audi ® 2018 to 2021 B9 RS5 and 2021 B9 S4/S5 computers!
From B5 to B8.5, GIAC has been an industry leader for making the fastest Audi ® S4 and RS4 cars on the planet. We are proud to now carry this twenty two year tradition of excellence to the B9 chassis, with the release of OBD flashing for B9 RS5 as well as the 2021 model year of the B9 S4 and S5. The installation process is quick, reliable and can be done at any one of the many GIAC dealers located around the world.
B9 RS5 GIAC gains over OEM:
| Peak Gains | Largest Gains At Any RPM |
|
| 93 Octane | + 71 HP and + 78 ft-lbs |
+ 80 HP and + 84 ft-lbs |
| 91 Octane | + 35 HP and + 66 ft-lbs |
+ 64 HP and + 77 ft-lbs |
| Peak Gains | Largest Gains At Any RPM |
|
| 93 Octane | + 67 HP and + 79 Ft-Lbs |
+ 73 HP and + 82 Ft-Lbs |
| 91 Octane | + 40 HP and + 68 Ft-Lbs |
+ 60 HP and + 68 Ft-Lbs |
Note: While GIAC does currently offer OBD flashing for the earlier 2017 - 2020 B9 S4 and S5 computers, they can still be sent to GIAC for the flash installation. Alternatively, some late 2021 and 2022 RS5 ECUs have been "locked" by the OEM manufacturer and can not be modified by any aftermarket calibrator at this time.
dynoplots
