Description

Overview

APR's ECU Upgrades are the best dollar-per-horsepower modification one can make to improve engine performance. 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 ECU Upgrades are available with various features and supported octane levels and each stage is compatible with most typical bolt-on modifications. The software is installed to the vehicle's factory ECU through the OBD-II port, resulting in a clean and headache-free install.

Fits 2010-2012 Audi S4, S5

Features:

Horsepower - More horsepower throughout the whole rpm band
Torque - More torque throughout the whole rpm band
Program Switching - Change programs and access features with your cruise control stalk (Stage 1 Only)
APR Mobile - Change programs and access features with your smart device (Stage 1 Only)
Valet Mode – Neuters the vehicle, giving the driver minimal output
Anti-Theft – Password protects driving the vehicle
Security Lockout – Password protects program switching
Fault Code Erase – Resets ECU fault codes and adaption on the fly
Stages - Multiple performance levels depending on installed hardware
Fuel Grades - Multiple octanes from which to choose
Acceleration - Accelerate faster with more power and reduced throttle lag
Brake Boosting - Left foot braking or brake boosting added
Speed Limiter - Go as fast as you want with the speed limiter out of the way
Rev Limiter - Increased redline for higher revving
Standing Limiter - Increased standing limiter for higher revving at idle
Motorsport Limiter - With the soft limiter removed, you’ll get full power right up to the hard, “bap bap bap” redline fuel cut
Economy - While cruising, or driving normally, your fuel economy may benefit from our optimized calibration
Direct Port Programming - Clean and easy install through the OBD II port without removing the ECU
Free Updates - Get free updates for life

Only use fuel equal to or higher than specified. Never use a lower octane fuel. Always follow our fuel guide, especially with race fuel and Ethanol, where available. Dynos are for reference only. Results will vary. Contributing factors include the vehicle condition, vehicle setup, dyno type, dyno setup, environmental factors, fuel quality, and more. When describing fuels, the North American Region (NAR) uses the Anti-Knock Index (AKI), (RON+MON)/2, or (R+M)/2. The Rest of the World (ROW) uses RON. RON is Research Octane Number and MON is Motor Octane Number.

APR ECU Upgrade Stages

APR’s ECU Upgrades are available in multiple octanes levels. Each stage is fully compatible with an upgraded intake, catback exhaust, or other minor bolt on modifications.

APR Stage 1

The APR Stage 1 ECU Upgrade is the first step towards making more power! This simple upgrade requires no engine hardware modifications and produces 427-462 HP with 370-387 of torque. To get more power, the vehicle can be outfitted with an upgraded intake, cooler, catback exhaust, and various other bolt-on modifications all without requiring any new modifications to the ECU.

APR Stage 1 is available for 91 AKI, 93 AKI, 100 AKI, and 104 AKI in North America, and 95 RON, 98 RON, 104 RON, and 108 RON in the Rest of the World.

APR Stage 2

The APR Stage 2 ECU Upgrade is the next step towards making more power! This simple upgrade requires upgrading the supercharger pulley, crank pulley, or both pulleys and produces 437-527 HP with 386-469 FT-LBS of torque when upgrading a single pulley. A cooler is highly recommended, and required to meed advertised results with a dual pulley setup. Use NGK Iridium IX BKR9EIX spark plugs. To get more power, the vehicle can be outfitted with an upgraded intake, exhaust, and various other bolt-on modifications all without requiring any new modifications to the ECU.

APR Stage 2 is available for 91 AKI, 93 AKI, 100 AKI, and 104 AKI in North America, and 95 RON, 98 RON, 104 RON, and 108 RON in the Rest of the World.

APR Stage 2 Plus Ultra

The APR Stage 2+ Ultra ECU Upgrade is the next step towards making more power! This simple upgrade requires the APR Ultracharger Throttle Body Upgrade, both the supercharger and crank pulley, intake, cooler, and exhaust and produces 478-542 HP with 426-472 FT-LBS of torque. Use NGK Iridium IX BKR9EIX spark plugs. To get more power, the vehicle can be outfitted with various other bolt-on modifications all without requiring any new modifications to the ECU.

APR Stage 2+ Ultra is available for 91 AKI, 93 AKI, 100 AKI, and 104 AKI in North America, and 95 RON, 98 RON, 104 RON, and 108 RON in the Rest of the World.

APR Calibration Report

Stage	HP	TQ	Max Gain	Max Gain
Stock As Reported by VAG	333 PS	325 FT-LBS
Stock As Measured by APR	359 HP	350 FT-LBS
Stage 1
91 AKI / 95 RON	427 HP	370 FT-LBS	+84 HP	+61 FT-LBS
93 AKI / 98 RON	441 HP	375 FT-LBS	+98 HP	+72 FT-LBS
100 AKI / 104 RON	458 HP	385 FT-LBS	+115 HP	+84 FT-LBS
104 AKI / 108 RON	462 HP	387 FT-LBS	+119 HP	+87 FT-LBS
Stage 2 Single Pulley
91 AKI / 95 RON	437 HP	386 FT-LBS	+94 HP	+68 FT-LBS
93 AKI / 98 RON	455 HP	395 FT-LBS	+112 HP	+82 FT-LBS
100 AKI / 104 RON	473 HP	404 FT-LBS	+130 HP	+95 FT-LBS
104 AKI / 108 RON	480 HP	409 FT-LBS	+138 HP	+100 FT-LBS
Stage 2 Dual Pulley
91 AKI / 95 RON	445 HP	412 FT-LBS	+100 HP	+80 FT-LBS
93 AKI / 98 RON	465 HP	428 FT-LBS	+120 HP	+97 FT-LBS
100 AKI / 104 RON	513 HP	459 FT-LBS	+168 HP	+126 FT-LBS
104 AKI / 108 RON	527 HP	469 FT-LBS	+182 HP	+136 FT-LBS
Stage 2+ Ultra
91 AKI / 95 RON	478 HP	426 FT-LBS	+133 HP	+97 FT-LBS
93 AKI / 98 RON	498 HP	441 FT-LBS	+154 HP	+112 FT-LBS
100 AKI / 104 RON	530 HP	464 FT-LBS	+185 HP	+135 FT-LBS
104 AKI / 108 RON	542 HP	472 FT-LBS	+196 HP	+143 FT-LBS

APR EMCS Program Switching

Program switching allows you to access additional program modes and features from your cruise control stalk or your smart device with APR Mobile. Depending on the ECU, available memory, and selected options, up to four program modes and all features, can be installed.

Stock Mode - Go back to the stock power levels.
Performance Modes - Switch between octanes and program modes.
Valet Mode - Neuters the vehicle, giving the driver minimal output.
Security Lockout - Password protects program switching.
Anti-Theft - Password protects driving the vehicle.
Fault Code Erase - Resets ECU fault codes and adaptation.

Who we are - We’re a global automotive engineering firm nestled in Opelika, Alabama. Our 80,000ft² state-of-the-art facility is home to some of the best engineers in the industry, who have mastered hundreds of engine management systems. We have multiple engine and chassis dynos, and the resources necessary to create our ECU Upgrades in-house, from the ground up! We're not a new company either. We've been around since the 90's and we have a strong financial backing to ensure we'll be here to support you for decades to come!

What we do - We optimize everything to make your engine more powerful. We adjust air-fuel ratios, advance ignition, increase boost pressure, alter cam positions and lift profiles, and more, all depending on the type of engine and management system, of course! We don’t take shortcuts, and we don’t take risks. We do it the right way.

How we differ - With our proprietary calibration and direct ram access data logging tools and operating system code changes, we’re able to make some of the strongest and fastest ECU upgrades, without needing costly end user adjustments. We work with the ECUs intelligent modeling and closed-loop systems, and beta test in multiple environments to create upgrades that work no matter where you drive!