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APR

APR ECU Upgrade - 2.5T EA855 EVO

2.5T I5 Engine Tune for the Audi RS3 17-20, TT RS Quattro 18-22

Part # ECU-25T-EA855-EVO Be the first to write a review

APR ECU Upgrade - 2.5T EA855 EVO

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Suggested Retail
$629.96
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7

Emissions

This part is legal under the provisions of EPA’s Tampering Policy dated November 23rd, 2020.

See Emissions Details
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!

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
  • Program Switching - Change programs and access features with your cruise control stalk
  • APR Mobile - Change programs and access features with your smart device
  • 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
  • Low Grip - Multiple profiles designed to enhance launching in low and high grip situations
  • Fuel Grades - Multiple octanes from which to choose
  • Ethanol - Ethanol support from E60-E85 for maximum performance
  • 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
  • Rev Limiter - Increased redline for higher revving
  • Standing Limiter - Increased standing limiter for higher revving at idle
  • Speed Limiter - Go as fast as you want with the speed limiter out of the way
  • Motorsport Limiter - With the soft limiter removed, you‚Äôll get full power right up to the hard, ‚Äúbap bap bap‚Äù redline fuel cut
  • Auto Start/Stop Inversion - Auto Start/Stop defaults to the off position
  • Exhaust Crackle - Multiple exhaust crackle profiles including factory, mild, and aggressive all with mode switching and component protection
  • Exhaust Flaps - Enhanced power delivery and drivability through recalibrated exhaust flap actuation
  • Added Safety - Additional safety features and protection modes added
  • Boost Gauge - The factory boost gauge displays accurate boost and reacts more quickly
  • Power and Torque Gauges - The factory power and torque gauges are accurately rescaled
  • Optimized Cold Start - Stage 2 features an optimized cold start that will surely please your neighbors
  • Economy - While cruising, or driving normally, your fuel economy may benefit from our optimized calibration
  • Flash Counter - Flash counter does not increase with each flash
  • Direct Port Programming - Clean and easy install through the OBD II port without removing the ECU
  • Free Updates - Get free updates for life
  • Guarantee - 30 day money back guarantee
Brand APR
Emission Code7
Engine AspirationTurbocharged
Engine ConfigurationI5
Engine Displacement2.5L
Engine FamilyEA855 EVO
Engine OrientationTransverse
Fuel TypeGasoline
Install TypeAPR Dealer (Software Price Shown)
MarketNAR
ROW
Product TypeECU Upgrade
Part NumberECU-25T-EA855-EVO
7

This part is legal under the provisions of EPA’s Tampering Policy dated November 23rd, 2020. The company has reasonable basis (test results) to verify that this product allows the vehicle to operate within legal emissions standards and is therefore legal to be sold for on-street use in all states that accept the legal provisions of the Clean Air Act and the EPA Tampering Policy. This product is NOT LEGAL FOR SALE OR USE IN THE STATE OF CALIFORNIA. Testing with the California Air Resources Board, in order to achieve 50-state compliance, is pending with CARB. Once testing is complete with California, and an E.O. number is issued, this product will be updated to 50-state legal status.
Important fuel quality information
Important fuel quality information
Find your boxcode and revision
Find your boxcode and revision
Program switching guide
Program switching guide
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. Please Note: Each vehicle's year, make, and model may have multiple factory engine or transmission controller software part numbers, known as box codes, each with unique revisions. Manufacturers periodically release software updates that alter this information, which can only be determined by scanning the controller and is not publicly provided. Due to the variety of codes, some stages, octane levels, features, or options may not be available for specific codes. Therefore, our website provides a general guide based on general info such as Year, Make, and Model. Our system allows you to request unavailable software, and we offer a 30-day money-back guarantee if you're not satisfied.

Have a question about this product?

  • Question

    Does the stage 3 tte700 e85 require a lpfp upgrade?

    By mike mounlio on February 26, 2023

    Answer
    Yes
    Helpful?
  • Question

    Hi, can this ECU be installed on a 2021 RSQ3?

    By Emanuele Guerra on February 22, 2023

    Answer
    Yes
    Helpful?
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APR ECU Upgrade Stages

Our ECU Upgrades are available in multiple configurations. Installation of additional performance hardware, such as an intercooler or intake systems, may provide further performance improvements. 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, reenabled the crackle on models where it was removed (2019+), adjusted the factory crackle to protect the components on Stage 1 and 1+ and enabled in more scenarios on Stage 2, 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

The APR Stage 1 ECU Upgrade is the first step towards tuning your engine. It produces up to 459-542 HP and 451-500 FT-LBS of torque. This stage has optional high and low grip modes designed to reduce wheel spin and aid in 60 FT and 0-60 times depending on surface prep. APR Spark Plugs are recommended.


APR Stage 1 is available for 91 AKI, 93 AKI, 100 AKI, 104 AKI and E60-E85 Ethanol in North America, and 95 RON, 98 RON, 102 AKI, 104 AKI, 108 AKI and E60-E85 Ethanol in the Rest of the World.

APR Plus

APR Plus is our APR Stage 1 ECU Upgrade with our limited powertrain warranty and it’s the first step towards tuning your engine. It produces up to 459 HP and 451 FT-LBS of torque. Please check our warranty manual to understand modifications supported by APR Plus.

APR Stage 1 Plus

The APR Stage 1+ ECU Upgrade is the next step towards tuning your engine. It produces up to 493-569 HP and 454-520 FT-LBS of torque, depending on octane. Use this tune with the APR Turbo Inlet. This stage has optional high and low grip modes designed to reduce wheel spin and aid in 60 FT and 0-60 times depending on surface prep. APR Spark Plugs are recommended.


APR Stage 1+ is available for 91 AKI, 93 AKI, 100 AKI, 104 AKI and E60-E85 Ethanol in North America, and 95 RON, 98 RON, 102 AKI, 104 AKI, 108 AKI and E60-E85 Ethanol in the Rest of the World.

APR Stage 2

The APR Stage 2 ECU Upgrade is the next step towards tuning your engine. It produces up to 493-569 HP and 454-520 FT-LBS of torque. This stage has optional high and low grip modes designed to reduce wheel spin and aid in 60 FT and 0-60 times depending on surface prep. Additionally this stage is available with optional crackle modes. The more aggressive modes increase the length, duration, intensity, and operating modes of the crackle. APR Spark Plugs are recommended.


APR Stage 2 is available for 91 AKI, 93 AKI, 100 AKI, 104 AKI and E60-E85 Ethanol in North America, and 95 RON, 98 RON, 102 AKI, 104 AKI, 108 AKI and E60-E85 Ethanol in the Rest of the World.

APR Stage 3

The APR Stage 3 ECU Upgrade is the next step towards tuning your engine. It produces up to


  • 576-713 HP with 523-536 FT-LBS of torque (TTE700)
  • 581-740 HP with 511-555 FT-LBS of torque (GTX3582)


Use this tune with the TTE700 turbocharger w/ included WG actuator or GTX3582 turbocharger with turbosmart WG actuator and MAC 3-port solenoid. Use 980cc port injectors. Use a proper 500 LPH+ @ 6 bar LPFP with E85 (SRM Brushless). This stage has optional high and low grip modes designed to reduce wheel spin and aid in 60 FT and 0-60 times depending on surface prep. Additionally this stage is available with optional crackle modes. APR Spark Plugs are recommended.


APR Stage 3 is available for 91 AKI, 93 AKI, 100 AKI, 104 AKI and E60-E85 Ethanol in North America, and 95 RON, 98 RON, 102 AKI, 104 AKI, 108 AKI and E60-E85 Ethanol in the Rest of the World.

Horsepower and Torque Dyno Charts

Select a DynoSelect a Dyno Type

APR Calibration Report

StageHPTQMax GainMax Gain
Stock As Reported by VAG 394 HP354 FT-LBS
Stock As Measured by APR 420 HP 372 FT-LBS
APR Plus
91 AKI459 HP 451 FT-LBS +66 HP +88 FT-LBS
APR Stage 1
91 AKI / 95 RON459 HP 451 FT-LBS +66 HP +88 FT-LBS
93 AKI / 98 RON476 HP 470 FT-LBS +86 HP +108 FT-LBS
102 RON491 HP 475 FT-LBS +98 HP +112 FT-LBS
100 AKI / 104 RON516 HP 498 FT-LBS +106 HP +137 FT-LBS
104 AKI / 108 RON524 HP 506 FT-LBS +113 HP +146 FT-LBS
E85542 HP 500 FT-LBS +132 HP +134 FT-LBS
APR Stage 1+
91 AKI / 95 RON493 HP 454 FT-LBS +86 HP +96 FT-LBS
93 AKI / 98 RON513 HP 480 FT-LBS +104 HP +116 FT-LBS
102 RON528 HP 485 FT-LBS +116 HP +121 FT-LBS
100 AKI / 104 RON533 HP 510 FT-LBS +125 HP +144 FT-LBS
104 AKI / 108 RON541 HP 518 FT-LBS +132 HP +152 FT-LBS
E85569 HP 520 FT-LBS +162 HP +152 FT-LBS
APR Stage 2
91 AKI / 95 RON499 HP 468 FT-LBS +92 HP +113 FT-LBS
93 AKI / 98 RON519 HP 496 FT-LBS +110 HP +134 FT-LBS
102 RON529 HP 490 FT-LBS +120 HP +125 FT-LBS
100 AKI / 104 RON540 HP 512 FT-LBS +131 HP +147 FT-LBS
104 AKI / 108 RON548 HP 520 FT-LBS +140 HP +156 FT-LBS
E85574 HP 530 FT-LBS +165 HP +165 FT-LBS
APR Stage 3 TTE700
91 AKI / 95 RON576 HP 512 FT-LBS +162 HP +145 FT-LBS
93 AKI / 98 RON596 HP 523 FT-LBS +182 HP +158 FT-LBS
100 AKI / 104 RON682 HP 526 FT-LBS +269 HP +202 FT-LBS
104 AKI / 108 RON694 HP 531 FT-LBS +280 HP +210 FT-LBS
E85713 HP 536 FT-LBS +294 HP +221 FT-LBS
APR Stage 3 GTX3582R
91 AKI / 95 RON581 HP 511 FT-LBS +164 HP +145 FT-LBS
93 AKI / 98 RON601 HP 523 FT-LBS +187 HP +158 FT-LBS
100 AKI / 104 RON707 HP 544 FT-LBS +295 HP +221 FT-LBS
104 AKI / 108 RON720 HP 549 FT-LBS +306 HP +230 FT-LBS
E85740 HP 555 FT-LBS +321 HP +241 FT-LBS
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.