*This software is installed in-house only, please call to make an appointment.
APR’s 4.0 TFSI V8 ECU Upgrade is an expertly recalibrated engine control strategy that primarily remaps the engine's
operating parameters, within the factory ECU, 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. Available in octane-specific variations, APR’s calibrations allow you to take
advantage of fuel quality available in your area. APR’s patented EMCS functionality puts the control of your engine’s
operation at your fingertips and allows for additional features and options to be installed to your OEM ECU.
Stage I ECU Upgrade Details:
Beyond power and torque enhancements, APR’s Calibration Engineers were able to increase the acceleration rate of the
RS6 & RS7 through other calibrations changes. Ignition delay is reduced resulting in a more responsive pedal without
altering overall throttle sensitivity. Furthermore, drivability was greatly improved by reducing the throttle lag commonly
noticed at slow speeds and while reapplying throttle after decelerating.
APR’s ECU upgrade increases the vehicle's top speed limiter for blistering sprints around the track or across the Autobahn
without the speed limiter shutting down your fun!
Increased Fuel Economy:
APR’s Calibration Engineers paid close attention to several parameters directly related to fuel economy, especially while
cruising at highway speeds. Depending on your driving style and fuel quality, you may see better miles per gallon!
Left Foot Braking:
APR's Left Foot Braking feature allows more control over the vehicle’s throttle. The factory equipped RS6 & RS7’s throttle
input is disabled while pressing the accelerator and brake at the same time. Left Foot Braking, a common motorsport
driving technique, allows the driver complete control over the vehicle’s throttle and braking system, which may give the
RS6 & RS7 the edge it needs at the track. As is with all features APR adds to the ECU, this feature may be removed
As Reported by Audi
Stock - 93 Octane
As Measured by APR
|91 Octane||93 Octane||100 Octane|
|*Max increases are based on APR's actual measured stock values and not those reported by Audi.|
|Rev Limit||6,700 RPM||6,700 RPM||6,700 RPM||6,700 RPM||6,700 RPM|
|Speed Limit||Max Speed Limited||Max Speed Limited||Unlimited||Unlimited||Unlimited|
|Peak Horsepower (HP)||553 HP||582 HP||645 HP||674 HP||728 HP|
|Peak Torque (FT-LBS)||516 TQ||563 TQ||656 TQ||700 TQ||744 TQ|
|Max Horsepower over Stock*||+90 HP @ 3,350 RPM||+123 HP @ 6,650 RPM||+162 HP @ 5,350 RPM|
|Max FT-LBS of Torque over Stock*||+134 TQ @ 3,400 RPM||+179 TQ @ 3,450 RPM||+223 TQ @ 3,500 RPM|
|Program Mode||0-60 MPH||0-62 MPH||0-100 KPH||0-100 MPH||60-120 MPH||62-124 MPH||100-200 KPH||60-130 MPH||30-130 MPH|
|Data collected at the same location via a Racelogic P-Box with ESP/ASR off, Dynamic mode and Sport mode. May not be comparable to data collected in other locations.|
APR Stage I
Stock vs APR 93
Stock vs APR 93
APR EMCS Programs & Features:
Program Switching: Program switching allows the user to cycle through up to four different engine calibrations and operating modes all without
the need for external hardware.
Stock Mode: By selecting stock mode, the ECU calibration is reset to the factory calibration. The engine will run exactly as it did before
purchasing APR software.
APR Performance Modes: APR's octane-specific calibrations are available for various premium and race fuels around the world. Each
performance mode is a completely new calibration, altered specifically for the characteristics of the fuel quality selected.
Valet Mode: APR's Valet Mode protects your vehicle from becoming an expensive toy for unauthorized individuals. By enabling Valet Mode, the
vehicle's performance is extremely limited. Launch control is uneventful, the vehicles top speed is limited to roughly 40 MPH and the engine's
redline is reduced to nearly 5,000 RPM!
Fault Code Erase: Fault code erase allows the user to erase and reset engine related trouble codes and ECU adaptation data without using a
Security Lockout: Security lockout prevents unauthorized individuals from using APR's EMCS functionality. When enabled, APR's EMCS features
will appear completely invisible until a user specified 2 to 4-digit security code is entered.
Anti-Theft: When activated, Anti-Theft prevents the engine from starting even if the factory key is used. The vehicle will be completely immobilized
until a user specified 2 to 4-digit security code is entered.
Special Note: This product is for installation in our Westlake, Ohio facility, please call HS Tuning to schedule an appointment.