Product Features

• Maximize horsepower & torque gains in your Audi A4

• Easily and quickly tune your car at home

• Retain factory reliability

• Includes IE POWERlink Flash Tool

• Upgrade tunes at any time with no fees

• Stage 1, Stage 2, and K04 Tune available

• Easy octane switching

• Simple data logging

• return to stock anytime

• Improved throttle response

• Increased rev limiter

• Remove top speed limiter

IE Audi B8/B8.5 A4 Performance Tune (2009-2015)

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IE Direct-Port Flash Tool   +$149.99

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Add horsepower to your Audi B8/B8.5 A4 in minutes from the comfort of your own driveway. With a Windows laptop computer unleash your engine's potential while maintaining factory reliability and comfort. 

Product Summary



IE's motorsport-inspired software brings track-ready ECU programming to your Audi A4 2.0T while retaining factory comfort and reliability. Developed in-house, IE engineers are equipped with industry-leading tuning technology to completely reverse engineer the factory mapping and safely modify it to maximize performance. Years of professional tuning high-powered race vehicles and intimate knowledge of the VW & Audi engines results in a wicked fast car on the street or the track. Your new software tune is easily uploaded to your factory installed ECU (engine control module) without touching a wrench in your own driveway. Multiple tunes are available to match your stock or installed aftermarket hardware.



Click on the Power Gains tab to view dyno charts.



The IE Stage 1 Audi B8 & B8.5 A4 (EA888 Gen 2 TSI) tune delivers an aggressive power upgrade without having to install any hardware modifications. Perfect for customers looking for a big jump in power without adding any additional hardware. In a matter of minutes, the vehicle will be much more enjoyable to drive with a massive boost in performance.
For customers looking to maximize the performance of the stock engine and turbo setups with bolt-on hardware, IE Stage 2 software fine-tunes the ECU calibration to match installed aftermarket hardware.  Stage 2 results deliver massive power gains across the powerband, fully realizing the engine and stock turbocharger potential. Requires IEEXCG1 Performance Downpipe, see additional hardware tab for Stage 2 hardware requirements.

Ready for more boost? The IE K04 Tune is meticulously designed for bolt-on Borg Warner K04 Turbocharger upgrades and features a completely new ECU calibration to take advantage of the larger turbo efficiency range. Upgrading to a K04 and Tune results in a much wider RPM band and power doesn't taper off like the factory installed K03 turbo. The ECU tune is safely adjusted to take advantage of the larger compressor wheel to reliably release the full potential of the new turbo size, pushing power much higher than available from the stock turbo. Tune includes 91, 93, and 100 octane files for maximum power.  


IE's own in-house developed POWERlink cable gives you the control to unlock your engine’s true potential from your own garage or driveway. Enjoy the freedom to quickly reflash your car’s engine control unit (ECU) or transmission control unit (TCU) with IE’s line of performance tunes. The cable simply plugs into your vehicle’s OBD-2 port delivering instant access to choose different IE Tune stages to match installed hardware, take advantage of different fuel octanes, flash back to stock, perform engine diagnostics, read/clear codes and gather high-quality operating data via logging.

Simply plug your IE POWERlink cable into your vehicle’s OBD-II port and the USB port on your Windows-powered laptop to use the included IE Flash Wizard software.
Upgrading to Stage 2 or beyond is easy! You only pay the difference in cost between the files with no additional or hidden fees. Upgrade at any time.

Many IE Tunes have multiple options available for you to take advantage of higher octanes. Gain big power by flashing 93, 100, or 104 octane versions of your file.

Easily gather simple to read ECU data for fast troubleshooting with our pre-loaded data logging option.

Have a friend with a compatible VW or Audi? Share the power with up to 5 different cars with a single cable. Just add enough credits to your cable for the desired tune and power-up your entire crew.

With the IE POWERlink, you can return your vehicle back to 100% original ECU programming at any time.

IE will always provide free software updates as they become available and easily reflashed through your IE POWERlink cable. 

Laptop or tablet with Wifi connection and USB port running Windows 7 or above operating system required. Powered by 32 or 64 bit processor with 1.0GHz or greater and 4GB of Ram.



IE's own easy to use Flash Wizard Software allows the IE POWERlink Tool to communicate with your vehicle's ECU to flash software tunes, upgrade, update, data log, or read/write codes. The software download is included with your tune/cable purchase and operates on any Windows 7+ powered laptop or tablet. The software is very simple to use and once installed will walk you through the fast tuning process to deliver instant horsepower. 



After completely reverse engineering the factory ECU, our engineers use our in-house Dynapack DP42 dynamometer to perform repeated runs to test each change that is made to the software and confirm drivability in any situation. This ensures IE performance software delivers massive horsepower and torque increases across the entire powerband. Using our in-house dyno and advanced tuning tools, IE engineers have fully optimized every aspect of the factory ECU mapping on many different vehicles. This produces a tune that retains all factory like driving and safety protocols when needed, and an intense surge of power when you want it.

The factory ECU speed limiter has been removed to make sure the increased power and torque can be used to its full potential on straightaways and drag strips.

With the significant power increase, the rev limiter is also increased to allow a wider powerband on all IE Audi A4 files. By increasing the rev limit, you gain a perfect match for the increased performance available from your new IE performance software tune.

To further increase the responsive feel of the car, IE engineers have carefully adjusted the throttle sensitivity. This offers a more connected feeling to your car with plenty of power available right beneath your foot.

All IE tunes have been adjusted to run as economically as possible, dialing in air/fuel ratios to exactly where they need to be. With an IE performance ECU flash, it is common to see increased fuel economy under cruising and part-throttle driving.

Power charts




  • AUDI - B8 & B8.5 A4 2.0T EA888 GEN1/GEN2 ENGINES (2009-2015)
  • AUDI - B8 & B8.5 A5 2.0T EA888 GEN1/GEN2 ENGINES (2008-2015)
  • AUDI - B8 & B8.5 A4 ALLROAD 2.0T EA888 GEN1/GEN2 ENGINES (2009-2015)
Additional hardware

IE Stage 1 required hardware:

  • None, optimized for stock hardware


IE Stage 1 recommended hardware:

  • IE performance FDS Intercooler - IE part number: IETPCG1

  • IE Cold air intake - IE part number: IEINCG1


IE Stage 2 required hardware:

  • IE performance FDS Intercooler - IE part number: IETPCG1

  • IE Cold air intake - IE part number: IEINCG1

  • IE Performance Downpipe - IE Part Number: IEEXCG1

IE K04 Tune required hardware:

  • IE performance FDS Intercooler - IE part number: IETPCG1

  • IE Cold air intake - IE part number: IEINCG1

  • IE Performance Downpipe - IE Part Number: IEEXCG1

  • B8 A4/A5 K04 Turbo Kit


Share your thoughts on this product Write a review
Read Full Review
Fantastic Tune
I've now had the stage 1 tune on my A4 for about 6 months. I've driven it in both the hot weather and the winter extremely cold weather. I have nothing but great things to say, this tune has actually improved the drivability of this car (6MT). With stock there was a dip in the powerband around 2500-3000 RPM, it's still there slightly but not nearly as noticeable. Everytime I step on the gas I smile! Will be buying an IE tune again with my next car!
Read Full Review
Great tune, very happy
Ordered the Stage 2 during the last sale. Super easy to install and the results put a smile on my face every time I get in the car. The stock drive ability is retained at low RPM, but once you hit about 3000 rpm it all changes in a good way! Thanks again!!
Read Full Review
Should have done it sooner!
Can not believe how much the stage 1 tune woke up my car. Would recommend this tune to anyone looking to put a bit more power into their cars. The drivability and throttle response has improved a ton and can’t thank you guys enough for your awesome customer service!
Read Full Review
Fantastic customer service
Ordered my cable and a 91Oct stage1 tune. When I plugged it in, my ecu wasn’t a US model, they took only three hours to add my ecu coding to their system and get me a 95RON (91Oct) tune. Works perfectly, has smoother out all the flat spots the stock tune comes with.
Adding a HFC and intercooler in the coming weeks - will be heading to stage2 soon.

Great customer service and fantastic product.
Read Full Review
Very pleased with the performance software
I initially purchased the stage 1 software and flash tool. The installation was quick and easy and I was impressed with the performance. After an intercooler and down pipe upgrade, I purchased the stage 2 for only $50 more. IE provided excellent customer service and even offered a 93 octane file. A++
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