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. Furthermore, for those looking for tuning with a limited powertrain warranty, APR Plus has you covered!

Fits 2012-2017 Audi A6, A7, A8, Q5, S4, S5, SQ5

Features:

Horsepower - More horsepower throughout the whole rpm band
Torque - More torque throughout the whole rpm band
Warranty - APR Plus is available, providing a factory term limit matching limited powertrain warranty
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 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 433-465 HP with 364-385 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 448-527 HP with 381-471 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 478-541 HP with 429-475 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 (272/310/333/354)	HP	TQ	Max Gain	Max Gain
Stock As Reported by VAG	272 PS 310 PS 333 PS 354 PS	295 FT-LBS 325 FT-LBS 325 FT-LBS 346 FT-LBS
Stock As Measured by APR	271 HP 309 HP 333 HP 361 HP	287 FT-LBS 321 FT-LBS 327 FT-LBS 364 FT-LBS
APR Plus
91 AKI / 95 RON	433 HP	364 FT-LBS	+147 HP +106 HP +124 HP +52 HP	+119 FT-LBS +86 FT-LBS +90 FT-LBS +42 FT-LBS
Stage 1
91 AKI / 95 RON	433 HP	364 FT-LBS	+147 HP +106 HP +124 HP +52 HP	+119 FT-LBS +86 FT-LBS +90 FT-LBS +42 FT-LBS
93 AKI / 98 RON	444 HP	372 FT-LBS	+159 HP +117 HP +134 HP +63 HP	+128 FT-LBS +95 FT-LBS +98 FT-LBS +51 FT-LBS
100 AKI / 104 RON	459 HP	380 FT-LBS	+171 HP +129 HP +150 HP +76 HP	+138 FT-LBS +105 FT-LBS +109 FT-LBS +64 FT-LBS
104 AKI / 108 RON	465 HP	385 FT-LBS	+174 HP +133 HP +155 HP +79 HP	+141 FT-LBS +107 FT-LBS +113 FT-LBS +65 FT-LBS
Stage 2 Single Pulley
91 AKI / 95 RON	448 HP	381 FT-LBS	+166 HP +125 HP +138 HP +71 HP	+135 FT-LBS +101 FT-LBS +101 FT-LBS +58 FT-LBS
93 AKI / 98 RON	458 HP	387 FT-LBS	+176 HP +134 HP +148 HP +80 HP	+142 FT-LBS +108 FT-LBS +108 FT-LBS +65 FT-LBS
100 AKI / 104 RON	470 HP	398 FT-LBS	+186 HP +145 HP +160 HP +91 HP	+151 FT-LBS +117 FT-LBS +117 FT-LBS +74 FT-LBS
104 AKI / 108 RON	481 HP	406 FT-LBS	+196 HP +155 HP +171 HP +101 HP	+159 FT-LBS +125 FT-LBS +125 FT-LBS +82 FT-LBS
Stage 2 Dual Pulley
91 AKI / 95 RON	445 HP	415 FT-LBS	+168 HP +126 HP +134 HP +73 HP	+135 FT-LBS +102 FT-LBS +98 FT-LBS +87 FT-LBS
93 AKI / 98 RON	468 HP	432 FT-LBS	+189 HP +147 HP +157 HP +93 HP	+152 FT-LBS +119 FT-LBS +115 FT-LBS +104 FT-LBS
100 AKI / 104 RON	513 HP	461 FT-LBS	+233 HP +191 HP +202 HP +138 HP	+188 FT-LBS +155 FT-LBS +147 FT-LBS +130 FT-LBS
104 AKI / 108 RON	527 HP	471 FT-LBS	+245 HP +204 HP +215 HP +150 HP	+198 FT-LBS +165 FT-LBS +157 FT-LBS +140 FT-LBS
Stage 2+ Ultra
91 AKI / 95 RON	478 HP	429 FT-LBS	+194 HP +153 HP +167 HP +99 HP	+157 FT-LBS +124 FT-LBS +122 FT-LBS +96 FT-LBS
93 AKI / 98 RON	498 HP	444 FT-LBS	+213 HP +172 HP +187 HP +118 HP	+172 FT-LBS +139 FT-LBS +137 FT-LBS +111 FT-LBS
100 AKI / 104 RON	530 HP	467 FT-LBS	+245 HP +204 HP +219 HP +150 HP	+198 FT-LBS +165 FT-LBS +160 FT-LBS +136 FT-LBS
104 AKI / 108 RON	541 HP	475 FT-LBS	+255 HP +214 HP +230 HP +160 HP	+206 FT-LBS +173 FT-LBS +168 FT-LBS +144 FT-LBS

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!

1 Review Hide Reviews Show Reviews

5
APR Stage 2

Posted by Milan Komljenovic on 1st Mar 2024

Certainly felt like it has more torque and pull from 2k rpm to 5k compared to the stage 1, worth the money.