GIAC Stage 1 Plus Audi S4 B9 ECU upgrade 3.0T

We are pleased to present the GIAC Stage 1 Plus Audi S4 B9 ECU upgrade with 3.0 Turbo engine. The Audi S4 B9 ECU upgrade replaces the standard software in your car's engine control unit without any physical modifications. In other words, the tune adjusts ignition timing, fuel delivery, boost settings, rev limiter and/or speed limiters to optimize performance and, in some applications, fuel economy. Depending on the ECU part number the installation could be either through OBDII or we will need to remove the ECU and then flash it. If we need to remove the ECU, the installation will take around 3 business days. An additional fee applies.

GIAC's understanding of vehicle controllers goes much deeper than simple table variable modification. While most "tuners" can only add and subtract from existing tables in the Engine Control Unit, we have the ability to change the functionality of the ECU at the code level, allowing for a complete calibration and even the creation of new tables and functions.

GIAC map switching gives customers the ability to change performance settings in their vehicle without a visit to the shop. The switch takes a couple of seconds and can even be done while the vehicle is idling. We have tuning products for fuel quality ranging from 91 to 109 octane covering both normally aspirated and turbo models.

Please choose the local pickup option at check out, when you purchase the product.

Stage 1 Plus ECU upgrade

We designed the GIAC Stage 1 Plus ECU Upgrade to dramatically increase torque and horsepower without sacrificing smooth drivability. In addition, the software accommodates numerous aftermarket performance modifications. An upgraded intake system, exhaust system and/or a charge cooler will further improve the performance.

The Audi S4 B9 ECU upgrade is available for the following ECUs (feel free to stop by our shop to check yours): 8W0907559G, 8W0907559H, 8W0907559L, 8W0907559M, 8W0907559S (OBDII).

Power gains from the Audi S4 B9 ECU upgrade

* 91 octane fuel compatible. 93 octane fuel for optimum results.
** 100 octane fuel compatible. 105 octane fuel for optimum results. Optional switcher or remapping required.
- All fuel grades are North American AKI or (RON+MON)/2. For more details click here.
- Reported wheel figures measured on GIAC's in house 4WD Mustang Dynamometer. Also, HP and Torque figures are average engine estimates from wheel power and acceleration testing. To sum up, the results will vary depending upon environmental conditions, vehicle, transmission, vehicle health, operating conditions, temperatures, fuel grade, dyno type, dyno setup, and other modifications.