APR Audi S5 (B8) 4.2L FSI V8 ECU Upgrade

Automobile Magazine Review of APR Software

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.

Dyno Performance

APR dyno
North American Application Guide
Year Vehicle Engine Stock 93 Octane (MON+RON)/2 Options Price  
 
2008+ Audi S5 4.2L FSI V8 355hp / 345ft-lbs 362hp / 352ft-lbs Single Program $699.00 Buy One Now
Rest of the World Application Guide
Year Vehicle Engine Stock 98 Octane RON Options Price  
 
2008+ Audi S5 4.2L FSI V8 355hp / 345ft-lbs 362hp / 352ft-lbs Single Program Contact Your Local APR Importer

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.

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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.

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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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