APR 2.5 TFSI EA855 EVO ECU Upgrade

Brand: APR
Part number: APRECU088
Applications: See Compatible Vehicles
Availability: Please contact us for availability

Due to the nature of this product it is not available to buy online. Please call us or visit our workshop if you wish to purchase.

Do you need help?
Call Us: 01773 602660
Email Us: info@prodigymotorsport.co.uk

PLEASE NOTE - For security we are not able to take orders over the phone. All orders should be placed via the website or in-store

Product Details

APR is pleased to present the ultimate engine control unit (ECU) upgrade for the 2.5T EA855 EVO (Gen 2) engine!

APR’s ECU Upgrades are the best dollar-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. Optional features, such as APR's EMCS Program Switching and APR Mobile are available.

APR ECU Upgrade Stages

APR’s ECU Upgrades are available in multiple stages, supporting various octanes both with or without any hardware modifications. Specific software is available for use with a high flow downpipe exhaust system and drop-in turbocharger upgrades are coming soon. Each stage is fully compatible with an upgraded intake, intercooler, catback exhaust, or other minor bolt on modifications.

Each stage includes optimizations to the factory boost gauge making it react more quickly and corrections to the power and torque gauges to match the increased output. Furthermore, we’ve added left foot braking, removed the speed limiter, raised the rev-limiter and added a motorsport limiter, adjusted the factory exhaust crackle to protect the catalyst, optimized cold start, retuned the exhaust flap actuation for the best performance and sound in multiple modes, optimized high altitude mappings, retuned the throttle for better response, and completely optimized the driving experience for street and track use making for a much more enjoyable driving experience!

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 459-542 HP with 451-506 FT-LBS of torque, depending on octane. Gains as high as 66-132 HP and 88-146 FT-LBS of torque are available throughout the power band. To get more power, the vehicle can be outfitted with an upgraded intake, intercooler, catback exhaust and other small modifications without requiring any new modification to the ECU. Upgrading the small factory intercooler is highly recommended on this platform.

APR Stage 1 is available for 95 RON, 98 RON, 102 RON, 104 RON, and 108 RON fuel grades.

APR Stage 2 ECU Upgrade

For use with a high flow downpipe. Details coming soon.

APR Stage 3 ECU Upgrade

For use with an upgraded drop-in turboharger. Details coming soon.

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.
- Reported wheel figures measured on APR's in house Dynamometer with a US Spec 2018 RS3, 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. On the dyno, this platform will see large swings in power based on intake air temperature, and the gear in which it's dynoed.
Stock As Reported by Audi 95 RON 394 HP 354 FT-LBS    
Stock As Measured by APR 98 RON 420 HP 372 FT-LBS    
APR Stage I 95 RON 459 HP 451 FT-LBS +66 HP +88 FT-LBS
APR Stage I 98 RON 476 HP 470 FT-LBS +86 HP +108 FT-LBS
APR Stage I 102 RON 491 HP 475 FT-LBS +98 HP +112 FT-LBS
APR Stage I 104 RON 516 HP 498 FT-LBS +106 HP +137 FT-LBS
APR Stage I 108 RON 524 HP 506 FT-LBS +113 HP +146 FT-LBS
Stage Price Exc. VAT Price Inc. VAT
- 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 1 ECU Upgrade £950.00 £1140.00
APR Stage 2 ECU Upgrade Coming Soon
APR Stage 3 ECU Upgrade Coming Soon


Below is a guide as to what vehicles this product will fit. If you are unsure if this will fit your vehicle, please contact us

Audi RS3 (Facelifted) (MKIII / Typ 8V)
Audi TT RS (MKIII / Typ 8S)