APR - Performance ECU Software - 3.0T EA837 V6 (Simos 8.5) audi sq5 b9.5 Fits Audi RS6 Avant 21-25

Fits Audi RS6 Avant 21-25

This system also requires other hardware to function properly when using APR software (sold seperately)

WHY THE SIMON 4

Our wheels boast ample clearance for both factory and aftermarket big brakes

a non-enthusiast may give up these characteristics for a quieter ride

APR - Performance ECU Software - 3.0T EA837 V6 (Simos 8.5) audi sq5 b9.5 Fits Audi RS6 Avant 21-25APR's ECU Upgrades are the best dollar per horsepower modification one can make to improve engine performance. The upgrades dramatically increase horsepower and torque, making for an exceptionally quicker and more exciting vehicle. This is made possible through APR's optimization of the factory engine management system to take full advantage of the engine's capabilities, without needing any end user adjustment. The ECU Upgrades are available with