The APR D4 S8 ECU Upgrade typically raises the power output of the 4.0T to 646 horsepower and 656 lb-ft of torque on 91 octane fuel with peak gains of 121 horsepower and 134 Lb-ft of torque at 3,500 RPM! Expect improved throttle response and a smoother, more powerful top end with no loss of drivability or reliability.
APR software can be loaded with up to four user selectable Operating Modes as well as Extra Features. APR's Flipswitch technology allows switching of Operating Modes or activation of Extra Features in seconds using the cruise control stalk with no need to purchase external hardware. Mode switching can also be performed via your iOS device with the APR Mobile Dongle (sold separately).
Exact OEM Calibration Stock Mode
APR 91 Octane Performance Mode
APR 93 Octane Performance Mode
APR 100 Octane Performance Mode
Valet Mode (Low power and speed)
Fault Code Erase (FCE): Resets engine related fault codes.
APR Mobile Dongle Support: Allows use of the APR Mobile Dongle (purchased separately) to switch Operating Modes, read and reset fault codes, view real time parameters, and perform data logging.
APR Audi D4 S8 4.0T ECU Upgrade Vehicle Fitment:
Installation: Installation can be performed at our facility by appointment, just give us a call at 425-895-0000 or email Service@Achtuning.com to schedule. With APR's DirectPort ECU tuning the ECU can be programmed in around 60 minutes, no ECU removal or soldering is required.
Note: We recommend that ECU chipping be done at your nearest APR distributor, this will offer you the best technical support available. Check The APR Dealer Locator to find your closest APR dealer. Installation of Security Lock Out and Anti-Theft is not available at Achtuning.
All APR ECU software comes with lifetime free updates (labor charges may apply). APR provides a lifetime warranty against defects in the software. All APR ECU upgrades have a 30-day Money Back Guarantee.