APR

APR ECU Upgrade - 3.0T EA839 V6 (4M) (Q7/Q8)

Unlock hidden horsepower and torque with our performance tuning software for your vehicle's Engine Control Unit (ECU).

Part # ECU-30T-EA839-4M
We're excited to announce our Engine Control Unit (ECU) Upgrades are now available for the Audi Q7 and Q8 (4M) 3.0 TFSI engine with the Bosch MG1 ECU! Expect massive gains with up to 393-432 HP and 500-564 FT-LBS of torque on tap, depending on octane, from this simple software upgrade.

Features:

  • Delivers up to 393-432 HP with 500-564 FT-LBS depending on octane
  • Max gains of +79-126 AWHP and +120-183 AWFT-LBS depending on octane
  • Supports 91 AKI, 93 AKI, 100 AKI, and 104 AKI fuel grades in North America and 95 RON, 98 RON, 104 RON, and 108 RON in the rest of the world
  • Optional factory term limit matching limited powertrain warranty with APR Plus
  • Standing RPM soft limiter increased
  • Left-foot braking / brake boosting added
  • Properly rescaled performance gauges
  • Optimized launch control strategy for faster response and boost building
  • Optimized driveline protection during launch
  • Optimized thermal management and additional protection
  • Optimized high-gear LSPI protection and turbocharger protection added
  • Speed limiter removed
  • Exhaust flaps recalibrated to provide better performance and increase sound during free-rev
  • Exhaust crackle added while retaining temperature safeties (optional feature)
  • Auto start-stop defaults to the off position
  • No hardware required (Software only)
  • Supports standard bolt on modifications
  • Eliminated the need for a TCU upgrade to achieve full torque
  • Free lifetime updates
  • Direct OBDII port flash (No ECU removal)
  • 30 day money back guarantee
Brand APR
Engine AspirationTurbocharged
Engine ConfigurationV6
Engine Displacement3.0L
Engine FamilyEA839
Engine OrientationLongitudinal
Fuel TypeGasoline
MarketNAR
ROW
Product TypeECU Upgrade
Part NumberECU-30T-EA839-4M
Important fuel quality information
Important fuel quality information
Find your boxcode and revision
Find your boxcode and revision
ECU Order Form
Select VW/Audi MG1 under unlock type
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 ECU Upgrade Stages

Our new suite of MG1 ECU software comes after months of extensive research and development that is typically absent from the aftermarket. Our upgrade makes the engine more powerful and more exciting. We’ve extensively calibrated the system to work flawlessly on the track, while retaining safety routines to protect your engine in the most demanding scenarios. This was all made possible by our engineering team's pursuit of perfection. Development vehicles were outfitted with additional sensors, including turbo shaft speed sensors, thermocouples, transducers, and more, along with our high speed direct RAM logging equipment, to feed valuable data to the team for analysis. After thousands of hours of testing and tuning we created new calibrations that are fine tuned for several octanes and contain hundreds of map changes, with a vast array of safety features built in.


The result of this work is nothing short of astounding. Not only have we increase power, we’ve added many safety routines to ensure the engine and components are protected under demanding scenarios. Additionally we’ve added features to enhance the driving experience.


We’ve recalibrated the exhaust flaps to reduce backpressure and create consistent turbo spool characteristics. Sound characteristics are improved too, especially during free-rev, which sees its limiter raise in park and neutral. We’ve added an optional feature to enable exhaust crackle, which mimics much of the behavior of the RS models without being over-the-top and obnoxious. This enables during free-rev, downshifts, and lifting off the throttle. It’s optimized with exhaust flap actuation, and includes safety routines to ensure component protection. Through proper torque management and ECU code changes, we’ve removed the requirement of a transmission tune to achieve full torque. We’ve optimized launch control for a better take-off and enabled boost building on the line. Additionally we’ve defaulted the start-stop feature to the off position, removed the speed limiter, added left-foot braking or brake-boosting, and configured the ECU to send the correct calibration to the dash for the performance gauges.


To protect the engine and components we’ve spent a considerable amount of time tuning safety routines, some of which were not active from the factory. The ECU will protect the engine should the exhaust flaps fail as back pressure becomes too high. The optional exhaust crackle feature will turn off should components get too hot. The engine has advanced LSPI protection to prevent the engine from damage when being lugged in the tallest gears. Excessive intake air temperature, which is common on a dynamometer, will cause power to reduce to protect the engine. Furthermore more we’ve added and calibrated protection routines for turbocharger pressure ratios, shaft speed, exhaust pressure, intake air temperature, coolant temperature, oil temperature, lambda, fueling system limitations, and more. All of this and more gives us confidence to offer an optional limited powertrain warranty through APR Plus!

APR Stage 1

The APR Stage I ECU Upgrade is the first step towards making more power! This simple upgrade requires no engine hardware modifications, and produces 393-432 HP with 500-564 FT-LBS of torque depending on fuel grade. Gains as high as +79-126 AWHP and +120-183 AWFT-LBS of torque are available throughout the power band, depending on fuel grade and factory output, making the vehicle exceptionally quicker in all scenarios. For even more power, this stage is compatible with normal bolt-on hardware modifications.


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 Plus

The APR Plus ECU Upgrade is the first step towards making more power, and it includes our limited powertrain warranty. This simple upgrade requires no engine hardware modifications, and produces 393 HP with 500 FT-LBS of torque. Gains as high as +79 AWHP and +120 AWFT-LBS of torque are available throughout the power band, making the vehicle exceptionally quicker in all scenarios.


The APR Plus ECU Upgrade matches the performance of our Stage 1 ECU Upgrade (91 octane). To get even more power, you can add any of our other Stage 1 compatible products and still be covered under the APR Plus warranty! If you're not interested in the APR Plus limited powertrain warranty, and want even more power, check out our other Stages.

Horsepower and Torque Dyno Charts

Select a DynoSelect a Dyno Type
30t_ea839_4m_q7_q8_s0_vs_s1_91_c.png

APR Calibration Report

StageHPTQMax GainMax Gain
Stock As Reported by Audi 335 HP 369 FT-LBS
Stock As Measured by APR 335 HP 384 FT-LBS
APR Plus
91 AKI / 95 RON393 HP 500 FT-LBS +79 HP +120 FT-LBS
Stage 1
91 AKI / 95 RON393 HP 500 FT-LBS +79 HP +120 FT-LBS
93 AKI / 98 RON407 HP 519 FT-LBS +96 HP +138 FT-LBS
100 AKI / 104 RON425 HP 540 FT-LBS +113 HP +158 FT-LBS
104 AKI / 108 RON432 HP 564 FT-LBS +126 HP +183 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.

The APR Difference

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!

APR Software Pricing Guide

Our performance software upgrade is available in multiple stages with optional features.

APR Plus
APR Stage 1 ECU Upgrade$1,799.95
APR Stage 1
APR Stage 1 ECU Upgrade$899.95
APR Stage 1 ECU Upgrade from APR PlusFREE

Purchasing, Guarantee, and Updates

How to Purchase - APR Software Upgrades are available through Authorized APR dealers. The dealer will connect to your vehicle, and install the update.¹ Alternatively you can mail your ECU to APR*. Fill out this form. Use this guide to remove your ECU. Mail your ECU to to APR, 4800 U.S. Hwy 280 W, Opelika, AL 36801, USA, and include the last 6 of your VIN on the outside of the box.


Money-Back Guarantee - Try our Software Upgrades for up to 30 days, risk free! If you are not satisfied, return to an APR Dealer to have it removed and refunded.²


Free Updates - If we make an update, add a standard feature, or if the manufacturer issues an update, you are entitled to a free update.³


1. APR Software may not be available for all vehicles. Stages, programs, and features may not be available for all ECUs.
2. Excludes some Software Upgrades, such as those included with a hardware purchase. Labor charges are at the discretion of the installer.
3. Subject to availability. Labor charges are at the discretion of the installer. Applicable to the original purchaser. Second hand owners may inquire with an APR Dealer about a software license transfer fee.
*. Excludes APR Plus.

*Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages.

Some parts are not legal for use in California or other states with similar regulations.