APR Audi S6 and S7 4.0 TFSI V8 ECU Upgrade
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 the engine’s operation at your fingertips and allows for additional features and options to be installed to the OEM ECU.
The ECU’s MED 17 engine management system is responsible for proper operation of the engine during constantly changing environmental and load conditions. With built in compensational data for environmental variables and varying load conditions, the factory ECU is far more complex and intelligent than units found in other vehicle makes and marques.
APR's Calibration Engineers spent months calibrating the engine management system, including many hours of chassis dyno development. With a thorough understanding of the ECU’s torque structure, APR’s Calibration Engineers properly increased engine load to produce more power and torque across the entire power band. APR’s ECU Upgrade increases boost pressure, optimizes ignition timing, cam timing, lambda and more to produce higher output!
APR’s ECU Upgrades provides an excellent leap in horsepower and torque while retaining OEM knock control sensitivity and other built in safety features. This results in an exciting and powerful upgrade, optimized for various fuel grades found around the world
APR Stage I ECU Upgrade
The APR Stage I ECU Upgrade gives you higher peak numbers of 563 HP/627 FT-LBS on 93 (R+M)/2 octane and up to 578 HP/635 FT-LBS on 100 (R+M)/2 octane race fuel! As much as 138 HP and 198 FT-LBS of torque are available through the power band!
Beyond horsepower and torque enhancements, APR’s Calibration Engineers were able to increase the acceleration rate of the vehicle through other calibrations changes. Ignition delay is reduced resulting in a more responsive pedal without altering overall throttle sensitivity. Furthermore, throttle lag commonly noticed at slow speeds and while reapplying throttle has been reduced.
APR's Engineers paid particular attention to torque delivery when using launch control. Through specific ECU calibration and code changes torque delivery is limited until the clutches are fully engaged. This results in blistering acceleration without suddenly over-stressing the S-Tronic clutch packs.
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 driving style and fuel quality, better miles per gallon may be achieved.
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 the fun.
Left Foot Braking:
APR's Left Foot Braking feature allows more control over the vehicle’s throttle. The factory equipped vehicle'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 vehicle the edge it needs at the track.
- APR Stage I - 91 - Wheel
- APR Stage I - 93 - Wheel
- APR Stage I - 100 - Wheel
- APR Stage I - 91 - Crank
- APR Stage I - 93 - Crank
- APR Stage I - 100 - Crank
- APR Stage I - 91 - Gain
- APR Stage I - 93 - Gain
- APR Stage I - 100 - Gain
As Reported by Audi
|Stock - 93 AKI
As Measured by APR
|- APR recommends and tuned with Sunoco GT 260 for 100 AKI mode and Sunoco GT 260 Plus for 104 AKI mode. Never use lower octane than specified by the mode.|
|- Max increases are based on APR's actual measured stock values and not those reported by Audi. | RON = ROW Fuel Grades | AKI = North American (RON+MON)/2 Fuel Grades.|
|- Reported wheel figures measured on APR's in house Dynapack Dynamometer with a US Spec 2013 S7 S-Tronic, using SAEJ1349 correction and an average of multiple runs. Crank figures are estimated based on the measured wheel figures. Results may vary depending upon environmental conditions, vehicle, transmission, vehicle health, operating conditions, temperatures, fuel grade, dyno type, dyno setup, other variables and other modifications.|
|Speed Limit||Max Speed Limited||Max Speed Limited||Unlimited||Unlimited||Unlimited|
|Peak Horsepower (HP)||420 HP||480 HP||553 HP||563 HP||578 HP|
|Peak Torque (FT-LBS)||406 TQ||451 TQ||588 TQ||627 TQ||635 TQ|
|Max Horsepower Increase over Stock*||+108 HP @ 3,850||+125 HP @ 3,800||+138 HP @ 3,850|
|Max FT-LBS of Torque Increase over Stock*||+155 TQ @ 3,500||+187 TQ @ 3,250||+198 TQ @ 3,350|
- APR Stage 1 - 93 - 0-60 MPH
- APR Stage 1 - 93 - 0-100 MPH
- APR Stage 1 - 93 - 62-124 MPH
- APR Stage 1 - 93 - 60-130 MPH
|Program Mode||0-60 MPH||0-100 MPH||62-124 MPH||60-130 MPH||1/4 60'||1/4 ET||1/4 Trap Speed|
|Data collected with version 1.0 at the same location via a Racelogic P-Box and at an IHRA Certified Drag Strip with launch control, ESP/ASR off, Dynamic mode and Sport mode. May not be comparable to data collected in other locations.|
|Best Measured Stock - 93 (R+M)/2 Octane||4.06 sec||9.24 sec||9.56 sec||11.32 sec||1.713 sec||12.216 sec||112.42 MPH|
|Best Measured APR Stage I - 93 (R+M)/2 Octane||3.52 sec||8.32 sec||8.51 sec||9.93 sec||1.656 sec||11.628 sec||117.83 MPH|
Acceleration Testing - Stock vs APR Stage I 93 Octane
Quarter mile Testing - Stock vs APR Stage I 93 Octane
APR EMCS Programs and Features
APR’s EMCS, Enhanced Modular Chipping System, brings selectable programs and features to your factory ECU, all without the need to purchase external hardware. Others have attempted to imitate EMCS with external switching devices that only replace or multiply portions of a “base” calibration. However, EMCS has the ability to completely rewrite the entire operating map data, giving each map a complete set of calibration changes. APR’s EMCS features and programs modes are activated via your OEM cruise control buttons. Your cruise control will continue to function as normal.
Program switching allows the user to cycle through up to four different engine calibrations and operating modes all without the need for external hardware.
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.
Fault Code Erase:
Fault code erase allows the user to erase and reset engine related trouble codes and ECU adaptation data without using a specialty tool.
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.
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.
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!
APR Mobile is a simple yet powerful tool designed to enhance the APR tuning experience.
APR Mobile installs on smart phones, tablets and other devices and provides a wireless connection to the vehicle’s engine control unit or ECU. Once connected, the device can be used to access APR’s EMCS program switching features, read and clear fault codes and data log the ECU at high data rates not found on other commercially available tools. The app can also be used to access APR’s latest news articles, locate dealers in APR’s network and review previously saved data logging sessions.
To learn more about APR Mobile, please visit our product page.
How to use APR EMCS Programs and Features without APR Mobile
S6 and S7 EMCS Program Switching and Features are operated identically to the B8 S4 shown in the video above.
To Enable EMCS:
Turn the ignition and cruise control to the on position. Do not start the engine. Ensure Security Lockout or Anti-Theft is disabled.
To Unlock the ECU or Disable Anti-Theft:
"SPEED+" is used to enter a digit and "SPEED-" is used to register the digit. Enter the first digit of the security code by pressing "SPEED+" the number of times corresponding to the first digit, then use "SPEED-" to register the digit. Repeat this step for each digit in the user defined security code. The check engine light and EPC light will flash to indicate the ECU is unlocked or Anti-Theft is disabled.
To use Security Lockout to Lock the ECU:
Hold "RESUME" on the cruise control stalk. The check engine light will blink in sets of one to three blinks indicating different features. Release "RESUME" when the check engine light is flashing in groups of three blinks per second. The EPC and CEL will blink to indicate the ECU is locked.
To Cycle through APR Programs:
Hold "SET" on the cruise control stalk. The check engine light will blink in sets of one to four blinks to indicate programs one through four. Release "SET" during this sequence to select a program. The EPC light will flash one to four times to indicate the program selected. The vehicle may be started.
To use Fault Code Erase:
Hold "RESUME" on the cruise control stalk. The check engine light will begin to blink. Release "RESUME" when the check engine light is flashing in groups of one blink per second. Fault Codes will be cleared.
To Enable Anti-Theft:
Quickly press "SET, SET, RESUME, RESUME, SET, SET, RESUME and RESUME". The check engine light will begin blinking. The vehicle will no longer start until the user defined security code is entered.
The APR Development Difference
APR DirectPort Programming:
APR’s DirectPort Programming is now available for the Bosch MED17.x ECU! Any APR Dealer in the world, connected to the Internet, has direct access to APR’s latest ECU upgrades for loading directly over the vehicle's OBD-II port. This completely eliminates the need to remove and open the ECU for currently available files and can be uninstalled at any time!
APR ECU Explorer:
APR’s proprietary ECU Explorer gives APR’s Calibration Engineers unparalleled access to the vehicle’s entire engine management system. Typical commercially available data logging tools, used by most tuners, only allow logging up to 12 engine-operating variables at extremely low data rates. These tools are also limited to a small, specific list of variables. APR’s ECU Explorer is capable of logging every variable found within the ECU. It’s capable of logging well over 100 variables at once with data rates as high as 100 samples per second. Synchronous data logging is available for fine-tuning.
APR ECU Composer with APR Live Tuning:
APR’s proprietary ECU Composer is used for altering the engine management system. With full access to every table, map and variable within the ECU, APR’s Calibration Engineers are not limited to a handful of maps as is common for most tuning companies. ECU Composer takes calibration to a new level on the 4.0T with APR's Live Tuning. APR’s Calibration Engineers can test calibration changes with a single click of a button to instantly monitor the changes, rather than spending several minutes shutting down the vehicle to reflash the ECU. This allows a level of fine-tuning unmatched in the market.
APR ECU Assembly:
APR’s Electrical Engineers have the ability to alter the code structure of the ECU to add features not available from the factory. Through code levels changes, APR's Engineers are able to add features designed to protect the gearbox during launch control. Other changes allow higher torque limit than those achievable through only modifying calibration data or using piggyback devices as is the case for many tuners. On the highly modified end, this allows APR to make Stage III Turbo Upgrades operate as if intended by the OEM. For most 4.0 TFSI owners, the advantage of this ability is the addition of APR’s EMCS Functions. EMCS puts the control of the engine’s operation at your fingertips and allows for additional features and options to be installed to your ECU.
|2012+||Audi C7 S6||ROW & North America||4.0 TFSI V8||S-Tronic||Quattro|
|2012+||Audi C7 S7||ROW & North America||4.0 TFSI V8||S-Tronic||Quattro|
|- Program switching may not be ablable for all vehicles.|
|- Pricing applicable to the USA only. If outside of the USA, please contact an APR Dealer and Importer for pricing.|
|- Please note vehicle manufacturers issue many ECU part numbers and revisions throughout their vehicle lineup. As such, some ECUs may be temporarily unavailable as new parts and/or revisions are released. If the vehicle's ECU part number and revision is known, availability can be checked at any APR Dealer.|
|APR Stage I ECU Upgrade||None||$1,499.00|
|- Add a Second Program Mode||Included at no charge|
|- Add a Third Program Mode||Included at no charge|
|- Add a Fourth Program Mode||Included at no charge|
|- Add APR Fault Code Erase Option||Included at no charge|
|- Add APR Security Lockout Option||Included at no charge|
|- Add APR Anti-Theft||Included at no charge|
How to purchase
Please use the APR Dealer Locater Tool to locate an APR Dealer, confirm availability and schedule an appointment.
Please note vehicle manufacturers issue many ECU part numbers and revisions throughout their vehicle lineup. As such, some ECUs may be temporarily unavailable as new parts and/or revisions are released. If the vehicle’s ECU part number and revision is known, availability can be checked at any APR Dealer.
Security, Warranty and Money Back Guarantee
30 Day Money Back Guarantee:
All APR ECU Upgrades include a 30-day money back guarantee with no questions asked. If for any reason you are dissatisfied with the APR ECU Upgrade, return to your place of purchase for a full refund, provided you are within the 30 day period from the time of your initial purchase. Labor or shipping charges are not included in the guarantee and are at the discretion of the place of install.
Limited Lifetime Warranty:
All APR ECU Upgrades include a limited lifetime warranty against defects in the software, and to provide free updates and reflashes as they become available. Labor or shipping charges are not included in the warranty and are at the discretion of the place of install.