APR Audi RS3 (8V / MK3) 2.5 TFSI ECU Upgrade

+61-86 Horsepower

+70-100 FT-LBS of Torque

Faster and More Exciting

Money Back Guarantee

engineAPR is pleased to present the ultimate engine control unit (ECU) upgrade for the 2.5T engine!

APR’s ECU Upgrades are the best price-per-horsepower modification one can make to the 2.5T engine. The upgrades dramatically increase horsepower and torque, making for an exceptionally quicker and more exciting vehicle. This is made possible through APR’s optimization of the factory engine management system to take full advantage of the engine’s capabilities, without needing any end user adjustment. The software loads to the factory ECU through the OBD-II port, resulting in a clean and headache-free install.

APR Stage 1 ECU Upgrade

The APR Stage 1 ECU Upgrade is the first step towards making more power! This simple upgrade requires no engine hardware modifications, and produces 415-435 HP with 434-464 FT-LBS of torque depending on fuel grade. Gains as high as 61-86 HP and 70-100 FT-LBS of torque are available throughout the power band, making the vehicle exceptionally quicker in all scenarios.

APR Stage 2 ECU Upgrade

The APR Stage 2 ECU Upgrade is the next step towards making more power! This upgrade requires an upgraded intercooler and high flow downpipe exhaust system, and produces 436 HP with 459 FT-LBS of torque with 98 RON fuel. Gains as high as 82 HP and 95 FT-LBS of torque are available throughout the power band, making the vehicle exceptionally quicker in all scenarios.

APR Stage 2+ ECU Upgrade

The APR Stage 2+ ECU Upgrade is the next step towards making more power! This upgrade requires an upgraded intercooler, high flow downpipe exhaust system, and a High Pressure Fuel Pump Upgrade, and produces 443 HP with 494 FT-LBS of torque with 98 RON fuel. Gains as high as 107 HP and 130 FT-LBS of torque are available throughout the power band, making the vehicle exceptionally quicker in all scenarios.

Dyno Testing
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APR Calibration Report
Stage Fuel grade Max HP Max TQ Max HP Gain Over Stock Max TQ Gain Over Stock
- 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 VAG. | RON = ROW Fuel Grades | AKI = North American (RON+MON)/2 Fuel Grades.
- Reported figures are estimated based on results from various vehicles across the world on various dyno types. 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.
Stock As Reported by Audi 95 RON 362 HP 343 FT-LBS    
Stock As Reported by APR 98 RON 384 HP 364 FT-LBS    
APR Stage 1 95 RON 415 HP 434 FT-LBS +61 HP @ 4,700 RPM +70 TQ @ 4,150 RPM
APR Stage 1 98 RON 425 HP 449 FT-LBS +73 HP @ 4,700 RPM +85 TQ @ 4,150 RPM
APR Stage 1 104 RON 435 HP 464 FT-LBS +86 HP @ 4,700 RPM +100 TQ @ 4,200 RPM
APR Stage 2 98 RON 436 HP 459 FT-LBS +82 HP @ 4,750 RPM +95 TQ @ 4,150 RPM
APR Stage 2+ 98 RON 443 HP 494 FT-LBS +107 HP @ 4,500 RPM +130 TQ @ 4,100 RPM

APR ECU Upgrade Included Features

APR World Class Calibration Expertise

engine

Tuning 101:

The 2.5T engine uses a Bosch MED17 ECU for engine management. Basically, it’s a computer that tells the engine how to operate. Tuning software, like the APR ECU Upgrade, tells the engine how to make more power. It does this by running more boost pressure, optimizing the cam shaft positions, adjusting the air/fuel ratio, advancing ignition timing, and more.

A Better Engine Management System:

The 2.5T’s ECU is incredible. Without the driver knowing otherwise, the ECU makes intelligent adjustments to the engine’s operations to keep it running smoothly. Unlike ECUs found in many other makes and models, when properly tuned, the ECU eliminates the need for custom tuning to maximize output, even when weather conditions change dramatically.

How APR Differs from the Competition:

The ECU is powerful, but extremely difficult to master. Without mastery, the ECU must be simplified, removing what makes it so desirable. The result is an incomplete product that often requires end user adjustment to maximize output in limited scenarios. On the contrary, APR’s Engineers spent years mastering the ECU to unlock its full potential. With complete access to the thousands of maps, tables and variables within, as well as a high-level understanding of how it works, APR’s Engineers were able to take advantage of everything the ECU has to offer. Power is maximized in nearly all scenarios, eliminating the need for end user adjustments. High performance operational modes are enabled and calibrated to deliver smooth daily driving, with a snappy and responsive throttle during moments of spirited driving. Mastery of the boost control system makes for an impressively predictable driving experience as the turbo spools quickly, delivering instant power. Lastly advanced high-output protection routines are enabled, allowing the ECU to make constant adjustments to airflow and fuel to cool and protect the engine, all without the driver knowing otherwise.

rabbitAcceleration Enhancements:
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.

vmaxSpeed Limiter:
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 BrakingLeft 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.

vmaxMotorsport Rev Limiter:
APR’s Motorsport Rev Limiter allows the engine to reach max RPM without the ECU slowing down acceleration nearly 150 RPM earlier. The result is more power to redline and a definable redline feeling as seen on Audi Quattro GMBH vehicles such as the RS4, RS5 and R8.

ecoIncreased 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.

The APR Difference

APR ECU Explorer

ECUxAPR’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 with far more variables logged at once, at very high data rates.

APR ECU Composer

ECUcAPR’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.

APR ECU Assembly

ECUsAPR’s Electrical Engineers have the ability to alter the code structure of the ECU. Through code levels changes, APR's Engineers are able to add features to the ECU. Other changes allow higher torque limits 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 often allows APR to make turbo upgrades operate without the need for external manual controllers.

APR Direct Port Programming

DirectPort ProgrammingAPR’s DirectPort Programming is now available! 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!

Application Guide
Vehicle Engine
Audi RS3 (MKIII / Typ 8V) 2.5 TFSI
Pricing
Stage Price Exc. VAT Price Inc. VAT  
IMPORTANT PRICING AND AVAILABILITY DETAILS:
- Availability and ECU Compatibility: Stages, programs, and features may not be available for all ECUs.
- ECU Revision Notice: Multiple ECU revisions exist for each platform. APR software may be temporarily unavailable when factory updates are applied. An APR dealer can check availability in person, or over the phone if the ECU boxcode/revision is known.
APR Stage I ECU Upgrade £699.00 £838.80
- Upgrade from APR Stage I to APR Stage II £Please Call
- Upgrade from APR Stage I to APR Stage II (after purchasing an APR Downpipe) No Additional Charge  

How to Purchase

APR DealerPlease 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.

30 Day Money Back Guarantee

guaranteeAll APR ECU Upgrades include a 30-day money back guarantee with no questions asked. If for any reason the owners is dissatisfied with the APR ECU Upgrade, they may return to the place of purchase for a full refund, provided they are within the 30 day period from the time of the 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

guaranteeAll 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.

APR Tuned

Phone: 0333 240 6823 Address: APR Tuning UK, Unit 1 Siemens Road, Manchester M44 5AH, UK

Copyright © 1997 - Present Day: APR Tuning UK. All Right Reserved

While we try to keep everything current, APR tuning Ltd is not responsible for errors in pricing on this web site. All prices are in GBP and are applicable to the UK only.