APR is pleased to present the ultimate engine control unit (ECU) upgrade for the 4.0 TFSI V8. APR's ECU upgrade is available in octane-specific variations, including and is conveniently flashed to the vehicle's factory ECU through the OBD-II port without any physical modification to the factory ECU. APR's EMCS functionality puts the control of theThe post APR Audi S6 and S7 4.0 TFSI V8 ECU Update 1.1 appeared first on Next Level Tuning.
