APR Audi R8 5.2L FSI V10 ECU Upgrade

Automobile Magazine Review of APR Software

APR is pleased to present the ultimate ECU Upgrade for the Audi R8 5.2L FSI V10 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 power across the entire power band, improved throttle response and a smoother, more powerful top end.


The Lambororghini Gallardo Superleggera offers OEM ECU Calibrations for the same 5.2L FSI V10 to achieve power levels as high as 570HP. APR's first opportunity was to equalize the R8 V10's calibration with the higher output versions.


The APR Audi R8 5.2L FSI V10 ECU Upgrade is an expertly recalibrated engine control strategy that remaps the timing, air fuel ratios and other engine management paramaters 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 583 horsepower and 431lb-ft. of torque, but also gains of up to 53 FT-LBS of torque is available at lower rpms! APR's ECU Upgrade is the best power per dollar modification for the Audi R8 5.2L FSI V10 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.


Dyno Performance

APR Stage I ECU Upgrade Calibration Report
As Reported by Audi
As Measured by APR
91 Octane (R+M)/2 or
95 Octane RON
93 Octane (R+M)/2 or
98 Octane RON
Rev Limit 8,650 RPM 8,650 RPM 8,650 RPM 8,650 RPM
Speed Limit 310 MPH 310 MPH Unlimited Unlimited
Power (HP@RPM) 525 HP @ 8000 RPM 526 HP @ 7750 RPM 559 HP @ 7950 RPM 583 HP @ 7850 RPM
Torque (LB-FT@RPM) 391 TQ @ 6500 RPM 395 TQ @ 6600 RPM 411 TQ @ 6650 RPM 431 TQ @ 6500 RPM
Largest Power Gain Over Stock (HP@RPM)     36 HP @ 8000 RPM 59 HP @ 7950 RPM
Largest Torque Gain Over Stock (LB-FT@RPM)     24 TQ @ 7950 RPM 53 TQ @ 3350 RPM
North American Application Guide
Vehicle Engine Transmission Options Price  
¹ Customers purchasing the APR ECU upgrade will be entitled to a fully loaded ECU when it becomes available at no additional charge.
Audi R8 CoupĂ©, Spyder & GT 5.2L FSI V10 6MT & R-Tronic APR Stage I 91 Octane (R+M)/2¹ or
APR Stage I 93 Octane (R+M)/2¹
$1,499.00 Buy One Now
ROW Application Guide
Vehicle Engine Transmission Options Price
Audi R8 Coupé, Spyder & GT 5.2L FSI V10 6MT & R-Tronic APR Stage I 95 RON or
APR Stage I 98 RON
Contact Your APR Importer

At this time the APR ECU Upgrade is offered as a single program only. Customers may choose APR software specific to their local fuel grades. North American customers may also return to an APR dealer at any time to reflash back to Stock or any other available octane. You are free to choose between any stock or performance mode without purchasing the software again. However, select dealers may choose to charge labor fees at their discretion.

North American customers purchasing the APR ECU upgrade will be entitled to a fully loaded ECU when it becomes available at no additonal charge.

Installation Options

APR's ECU Upgrade is able to be installed by APR's professional dealer network or by APR directly. Some applications are available to be installed via DirectPort programming without removing your ECU or even opening the hood. Some ECUs must be removed from the vehicle for DirectPort Programming. DirectPort Programming is not available for all late 1990 / early 2000 models and in these rare cases EMCS Modules are able to be soldered to the ECU. In the event there is not an APR dealer near, you also have the option to remove your ECU and send it to APR Headquarters for installation.

DirectPort Programming

DirectPort Programming is another industry first brought to you by APR. DirectPort Programming is also referred to as "flashing" the ECU with the new operating software contained in APR's ECU Upgrade. No more soldering additional hardware to expensive and delicate factory electronics. DirectPort Programming facilitates ease of installation and offers new features to give you even more flexibility with your OEM ECU. DirectPort Programming is only available by bringing your car to an APR dealer or by mailing your ECU to APR directly.

How to Purchase

APR provides two easy and painless methods to purchase your ECU Upgrade. You may visit any APR Dealer for local installation while you wait or you can remove your ECU and send it directly to APR Headquarters for installation. Typically your ECU is returned the same day we receive it. For ECU removal instructions see our Customer Support page.

If you're sending your ECU in to us, please print out and complete the order form below. Be sure to indicate which programs you would like to purchase, as well as the other information requested. For information on the program options, see above under the EMCS heading.

Find a Dealer

Order Form

Security, Warranty and Money Back Guarantee

All APR ECU Upgrades are fully encrypted to prevent theft of our valuable and proprietary coding information by lesser companies.

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. Installation may be additional and is not included in the warranty.

All APR ECU Upgrades offer a 30 day money back guarantee with no questions asked. If for any reason you are unhappy with your APR ECU Upgrade you may return the upgrade to your place of purchase for a full refund provided you are within a 30 day period from your time of initial purchase. Installation is not included in the guarantee and is at the discretion of the place of install.


  • AlamoCity Audi - Just had the APR ECU tune done today, and in a word: amazing. Car feels transformed with much quicker throttle response and the additional low end (~3k rpm) torque is a huge boon in city driving. Can't wait to get it on the track. I can't imagine a better power-per-dollar modification out there. And as an aside, kudos to the APR support staff (I called them several times and they were incredibly helpful).

  • gazza1 - It is APR day as I just had mine installed today as well on 98 octane. Quick brief is car NOTICEABLY quicker and pulls hard..hardcore is best word for now! Feels harder pull than my Cobb/mid pipe R35 GTR. Can start to feel real g force on the chest now. In second gear accelerating hard in a straight line the tyres now really squirm and the traction control works overtime. Best bang for buck out there...Worth every cent.

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Phone: (800) 680-7921 Local Phone: +1 (334) 502-5181 Fax: (334) 502-5180 Address: APR LLC, 4800 US HWY 280 West, Opelika, AL 36801

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