Please note that your vehicle must be present in order to program your ECU. To schedule an appointment, please feel free to contact us.
APR is pleased to present the ultimate ECU Upgrade for the Audi S5 4.2L FSI V8.
APR is pleased to present the ultimate ECU Upgrade for the Audi B8 S5 4.2L FSI V8 engine. After months of long nights and many hours of testing, development and more testing, we are pleased to offer you an ECU recalibration that is second to none. APR's extensive research and development provides you with a powerful ECU Upgrade with no loss of drivability or reliability. Expect increases in low-end torque, improved throttle response and a smoother, more powerful top end.
The APR Audi B8 S5 4.2L FSI V8 ECU Upgrade is an expertly recalibrated engine control strategy that remaps the timing and air fuel ratios to provide smooth and reliable power as if intended by the OEM. APR's ECU Upgrade is developed to work within the OEM and Tier 1 Supplier specifications for engine component stress tolerances and performance specifications. APR's ECU Upgrades are available in octane specific versions to allow you to take full advantage of the fuel quality available in your area. APR's patented EMCS functionality puts the control of the engine's operation at your finger tips and allows for additional features and options to be installed to your OEM ECU.
Stage I ECU Upgrade
Not only does our Stage I ECU Upgrade give you higher peak numbers of 362 horsepower and 352lb-ft. of torque, but also gains of up to 15 horsepower! APR's ECU Upgrade is the best power per dollar modification for the Audi B8 S5 4.2L FSI V8 and gives it just the extra edge these cars lack from the factory without pushing the limits. With factory like smoothness and drivability APR's ECU Upgrade will fill the void in an otherwise excellent car.