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APR 1.8T Gen3 IS20 Turbo ECU Upgrade

+104-149 Horsepower

+113-145 FT-LBS of Torque

Factory Turbo Upgrade

Quicker and Faster

500+ APR Dealers World-Wide

APR is pleased to present the OEM GTI/A3 IS20 Turbocharger ECU upgrade for the 1.8T EA888 Gen 3 engine!

APR IS20 Turbo Upgrade

This ECU Upgrade requires the factory IS20 turbocharger, found on the MK7 GTI / A3 Quattro, and seperate ECU Upgrades are available for use with the factory DP exhaust system or a FWD Race DP or AWD Race DP.

With the factory exhaust DP it produces 274-306 HP with 308-326 FT-LBS of torque. Gains as high as 104-136 HP and 113-138 FT-LBS of torque are available throughout the power band.

With a FWD Race DP or AWD Race DP it produces 284-319 HP with 311-330 FT-LBS of torque. Gains as high as 114-149 HP and 117-145 FT-LBS of torque are available throughout the power band.

APR highly recommends the vehicle be outfitted with an upgraded intake and intercooler. To get more power the vehicle can be outfitted with a catback exhaust and other small modifications without requiring any new modification to the ECU. APR's TCU Upgrade may be required to prevent transmission slip on DQ250 DSG/S Tronic models, and is required to acheive a higher redline. APR recommends properly gapping the factory spark plugs to a tighter gap (Ex: 0.024" ±0.002" or 0.6mm ±0.05mm), properly installed and torqued (Ex: Per the manufacturers specifications), and maintained with a shorter changer interval (Ex: 10,000-15,000 mi or 16,000-24,000 km).

Dyno Testing
Select A Graph Select Graph Type
APR Calibration Report
Stage NAR Fuel ROW Fuel 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 wheel figures measured on APR's in house AWD Mustang Dyno with a US Spec 2017 MK7 Golf Sportwagen DSG, using SAEJ1349 correction and an average of multiple runs. Crank figures are estimated based on the measured wheel figures. 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 VAG 91 AKI95 RON 170 HP 184 FT-LBS    
Stock As Measured by APR 93 AKI98 RON 170 HP 198 FT-LBS    
APR IS20 GTI Turbo w/ OEM DP 87 AKI 91 RON 274 HP 308 FT-LBS +104 HP +113 FT-LBS
APR IS20 GTI Turbo w/ OEM DP 91 AKI 95 RON 292 HP 315 FT-LBS +123 HP +120 FT-LBS
APR IS20 GTI Turbo w/ OEM DP 93 AKI 98 RON 297 HP 319 FT-LBS +127 HP +129 FT-LBS
APR IS20 GTI Turbo w/ OEM DP 100 AKI 104 RON 306 HP 326 FT-LBS +136 HP +138 FT-LBS
APR IS20 GTI Turbo w/ APR DP 87 AKI 91 RON 284 HP 311 FT-LBS +114 HP +117 FT-LBS
APR IS20 GTI Turbo w/ APR DP 91 AKI 95 RON 302 HP 325 FT-LBS +133 HP +131 FT-LBS
APR IS20 GTI Turbo w/ APR DP 93 AKI 98 RON 312 HP 329 FT-LBS +143 HP +138 FT-LBS
APR IS20 GTI Turbo w/ APR DP 100 AKI 104 RON 319 HP 330 FT-LBS +149 HP +145 FT-LBS

APR ECU Upgrade Included Features

APR World Class Calibration Expertise


Tuning 101:

The 1.8T engine uses a Continental Simos 12 and 18 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, valve lift actuation, adjusting the air/fuel ratio, advancing ignition timing, and more.

A Better Engine Management System:

The 1.8T’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, while torque-by-gear helps with traction control and protects the engine from being lugged out in tall gears. 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. Please note, this feature may not be available for all ECUs.

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 Market Engine Transmission Drivetrain
Audi A3 (MK3 / Typ 8V) North America 1.8 TFSI EA888 Gen 3 S Tronic Front Wheel Drive
Volkswagen Golf (MK7 / Typ 5G) North America 1.8 TSI EA888 Gen 3 5MT & Tiptronic Front Wheel Drive
Volkswagen Golf Alltrack (MK7 / Typ 5G) North America 1.8 TSI EA888 Gen 3 6MT & DSG All Wheel Drive
Volkswagen Golf Sportwagen (MK7 / Typ 5G) North America 1.8 TSI EA888 Gen 3 5MT, 6MT, Tiptronic & DSG Front Wheel Drive & All Wheel Drive
Stage Price
- Pricing: Please contact an APR Importer for pricing outside the USA.
- 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 IS20 Turbo ECU Upgrade - Existing APR ECU Upgrade Customer
Buy Now$299.99
APR IS20 Turbo ECU Upgrade - New Customer $599.99

Turbocharger Loyalty Program

We’re pleased to announce the turbocharger upgrade path just got a little easier for our loyal APR customers. If you’ve purchased an APR ECU Upgrade and want to upgrade to one of our turbocharger systems, you can take advantage of fantastic savings! It’s our way of saying “thank you” for enjoying our ECU Upgrades before stepping up to the big leagues! To see the savings, head on over to our product pages and take a look at the new pricing tiers.

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.

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.

warningWARNING: Cancer and Reproductive Harm. For a list of APR part numbers associated chemicals, go to https://www.goapr.com/prop65/. For more information, go to www.P65Warnings.ca.gov.

APR Tuned

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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Notice: Products that affect emissions and do not carry a California Air Resources Board Executive Order are not for sale in California, USA. While we try to keep everything current, APR LLC is not responsible for errors in pricing on this web site. All prices are in USD and are applicable to the United States of America only.
¹APR offers free ground shipping to the lower 48 states for purchases over $100.