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

Fits 2018-2023 Volkswagen Atlas

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
Fuel Grades - Multiple octanes from which to choose
Stages - Multiple performance levels depending on installed hardware
Acceleration - Accelerate faster with more power and reduced throttle lag
Linear Throttle - Pedal maps adjusted for a more linear feel
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
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
Auto Start/Stop Inversion - Auto Start/Stop defaults to the off position
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

Important fuel quality information
Important fuel quality information

Find your boxcode and revision
Find your boxcode and revision

APR Plus Warranty Booklet
APR Plus Warranty Booklet

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 tuning your engine. It produces up to 291-319 HP and 317-348 FT-LBS of torque. This stage has optional low torque output files and FWD specific files to limit first gear wheel spin. APR spark plugs are recommended.

APR Stage 1 is available for 87 AKI, 91 AKI, and 93 AK North America, and 91 RON, 95 RON, and 98 RON in the Rest of the World.

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.

The APR Stage 1 ECU Upgrade is the first step towards making more power! This simple upgrade requires no engine hardware modifications and produces 291-319 HP with 317-348 FT-LBS of torque on most models. To get more power, the vehicle can be outfitted with an upgraded intake, intercooler, catback exhaust, and various other bolt-on modifications all without requiring any new modifications to the ECU. This stage has an optional low and high torque modes to maximize clutch and transmission compatibility. This stage also has optional FWD and AWD files depending on setup. The FWD files will limit wheel spin in first gear. APR recommends NGK heat range 9 (NGK-R7437-9) spark plugs gapped to 0.024" ±0.002" or 0.6mm ±0.05mm with a change interval of 10-15,000 mi or 16-24,000 km.

APR Stage 1 is available for 87 AKI, 91 AKI, and 93 AK North America, and 91 RON, 95 RON, and 98 RON in the Rest of the World.

APR Calibration Report

Stage	HP	TQ	Max Gain	Max Gain
Stock As Reported by VAG	232 HP	258 FT-LBS
Stock As Measured by APR	253 HP	262 FT-LBS
APR Plus
87 AKI	291 HP	317 FT-LBS	+41 HP	+57 FT-LBS
APR Stage 1
87 AKI	291 HP	317 FT-LBS	+41 HP	+57 FT-LBS
91 AKI / 95 RON	311 HP	340 FT-LBS	+59 HP	+80 FT-LBS
93 AKI / 98 RON	319 HP	348 FT-LBS	+66 HP	+88 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!