Toll Free: 1.866.341.2447 My Cart (0)     FR


Unitronic Stage 2 Performance Software for B9 S4, S5 and SQ5 3.0TFSI EA839 - Now Available

May 30th, 2024 Products

Unitronic® Stage 2 ECU Performance Software is now available for the B9 Audi® S4®, S5® and SQ5® equipped with the 3.0TFSI® EA839 (CWG) engine.* With testing and validations completed, power output is increased by up to +116HP / +187LB-FT with Unitronic Stage 2 (93octane/98ron) Performance Software for a maximum of 467HP / 547LB-FT. This Performance Software is entirely compatible with our UniCONNECT+ cable, empowering Clients to tune their vehicles directly through the OBD-2 port within minutes, from the comfort of their own home or garage.

In order to support this huge increase in power, Unitronic is also pleased to announce the release of its High Performance Downpipe for the B9 3.0TFSI engine featuring a 6" GESi® UHOX 400cpsi catalyst, stainless steel construction, OEM heat shielding and direct bolt-on design.

Unitronic 3.0 SW

Unitronic 3.0 SWUnitronic 3.0 SW

With extensive experience and a growing catalog of Performance Hardware and Software offerings for the 2.9TFSI & 3.0TFSI EA839 engines, Unitronic Engineers recalibrated the BOSCH MG1 ECU found in the B9 S4, S5 and SQ5 with total boost regulation control, optimized ignition timing, lambda, camshaft timing and much more. With testing and validations completed, power output is dramatically increased over Stage 1 and Stage 1+ levels for a maximum gain of +116HP / +187LB-FT over stock with Unitronic Stage 2 (93octane/98ron) Software and supporting bolt-ons. Stage 2 (91octane/95ron) calibrations are available as well. Stage 1+ E85 and Stage 2 E85 calibrations will also be released shortly.

Optimized Responsiveness, Smoothness, Drivability, and Comfort

Unitronic’s ECU calibrations are engineered to improve engine response and reduce low-end lag. Unitronic’s Performance Software has gained worldwide recognition and is well known for its broad powerband, with smooth power delivery, maximizing responsiveness and “area under the curve”, under normal and hard acceleration.

Ignition Timing Precisely Calibrated for Higher Octane Fuel

Engine calibration optimized to take advantage of higher fuel quality to extract maximum combustion energy. Therefore, when using a higher octane fuel, more power and better fuel efficiency will be achieved.

Optimized Maximum Output

Unitronic’s ECU Calibrators deliver the maximum power output while staying within the operational limits of the factory engine and drivetrain components. Specifically, this results in the highest engine performance without sacrificing the reliability of the engine, turbocharger, or other engine and drivetrain components.

Factory Safety Limiters Retained

OEM “fail safes” are retained within the ECU calibration. Close monitoring of all operation parameters ensures that engine operation stays within factory components limits, resulting in reliability.

Power Delivery Perfectly Optimized Throughout the Power Band

Aligned with the OEM strategy, the calibration is designed to offer a large flat torque plateau to provide a smooth and linear power band. Maximum torque output is achieved sooner and maintained longer which creates a broader torque plateau and greater area under the curve. This results in an improved acceleration and optimal engine operation.

Speed Governor Removed

Vehicle speed limiter within ECU is removed. (Subject to transmission rotational speed limit.)

Improved Fuel Efficiency

Optimized timing and injection in cruising condition allows for an improved fuel efficiency, under normalized driving conditions.

Engineered with Strict Industry Standards

With over 20 years of experience with Bosch and Siemens engine management systems and calibrations, Unitronic is able to utilize its expertise, industry leading tools and equipment to ensure an optimal calibration; delivering maximum performance, while maintaining complete OEM-like reliability and drivability.

Extensively Tested Under Various Driving Conditions

Development begins using Unitronic’s in-house Maha Chassis dyno housed in an environmentally controlled cell; closely monitoring a plethora of operational data, utilizing industry leading calibration tools and resources. Beta calibrations are then tested in street and track scenarios, using multiple cars under various driving conditions. This engine calibration strategy ensures Unitronic Performance Software delivers maximum performance, OEM-like drivability and reliability anywhere in the world. Unitronic Performance Software is only released to its Clients once development is thoroughly completed in accordance to Unitronic’s strict standards.

Unitronic UniConnect Plus cable

This platform is also supported with Unitronic’s UniCONNECT+ cable, empowering you to tune your vehicle from the comfort of your own home or garage. The cable and associated software allows you to install and upgrade your new Unitronic tunes, flash back to stock, read and clear DTCs and much more. This is the perfect option for people who like to be autonomous or who don't have a Unitronic Authorized Dealer nearby.


Unitronic is proud to expand upon its Performance Hardware offerings for the B9 3.0TFSI EA839 platform which now includes the all-new and highly anticipated Performance Downpipe, the popular and direct-fit Intercooler upgrade, high-flow Intake System and Turbo Inlet which all combine to help produce maximum gains, performance and reliability.

Unitronic DownpipeUnitronic Intercooler

Unitronic IntakeUnitronic Inlet

Unitronic's Performance Downpipe features OEM-style heat shielding which not only protects the engine bay from radiant heat, but also ensures catalyst temperature is reached and maintained for optimal efficiency and function. The large 6" GESi UHOX catalytic converter provides exceptional flow while greatly enhancing the exhaust note of the turbocharged 3.0TFSI V6 engine. The smooth post-cat stainless steel transitions lead into dual 4.5" T304 stainless steel tubing, terminating at the factory 3-bolt mid-pipe flanges to ensure a seamless direct bolt-on fitment. When we say it's bolt-on fitment, we stand behind our words.

Unitronic 3.0 DP

In order to assure maximum performance and reliability, Unitronic highly recommends its Intercooler upgrade for all tuned B9 3.0TFSI vehicles. The graph below shows how quickly intake air temperatures can rise with the insufficient OEM intercooler. After 6 consecutive dyno runs, the Unitronic Intercooler provided significant reductions in air temperature allowing for more dense charge air to be ingested by the engine which translates to increased overall performance. Its resistance to heat soak means that the core also retains its cooling abilities, even through the most demanding conditions.

Unitronic Intercooler Performance


Featuring an extensive lineup of Performance Software and Hardware with tune-from-home capabilities, Unitronic is confident that its suite of upgrades for the B9 3.0TFSI platform will impress customers across the globe. From increased power to improved throttle response and drivability, Unitronic's meticulously engineered solutions offer unparalleled performance and reliability. Whether you're a seasoned car enthusiast or new to vehicle tuning, our user-friendly products and exceptional customer support ensure a seamless and satisfying experience. Join the global community of satisfied Unitronic customers today!

S5 Dyno


2017+ Audi S4 3.0TFSI

2018+ Audi S5 3.0TFSI

2018+ Audi SQ5 3.0TFSI

*Subject to ECU box code availability.

Unitronic Dealer Locator Banner

View mobile version

UNITRONIC® is a registered trademark of Unitronic Corporation Inc.
© 2024 Unitronic Performance Software and Hardware. All Rights Reserved.
4633 Louis B-Mayer, Laval, Quebec, Canada, H7P 6G5 Tel.: 1.866.341.2447 / Fax: 1.866.714.9893
Sema Logo

*Unitronic is not affiliated with any vehicle manufacturers. All Manufacturer and vehicle names and trademarks are used in this web site are for identification purposes only. All trademarks and trade dress such as Audi ®, Volkswagen ®, VW ®, Seat ®, Skoda ®, Porsche ®, Lamborghini® GTI ®, Golf ®,Golf R ®, Golf City ®, Alltrack ®, SportWagen ®, Cupra ®, Scirocco ®, Jetta ®, GLI ®, R32 ®, Rabbit ®, Passat ®, Passat CC ®, Tiguan ®, Beetle ®, New Beetle ®, EOS ®, Touareg ®, Phaeton ® DSG ®, S Tronic ®, TSI ®, TFSI ®, VR6 ®, A1 ®, A3 ®, S3 ®, RS3 ®, Q3 ® , A4 ®, S4 ®, RS4 ®, A5 ®, S5 ®,RS5 ® Q5 ®, SQ5 ®, A6 ®, S6 ®, RS6 ®, Q7 ®, SQ7 ®, A7 ®, S7 ®,RS7 ® A8 ®, S8 ®, R8 ®, TT ®, TTS ®, TTRS ®, Boxster ®, 911 ®, 996 ®, 997 ®, 991 ®, Panamera ®, Macan ®, 918 Spyder ®, Cayenne ®, Cayman ®, Huracan ®, Huracan Performante ® are registered trademarks of Volkswagen AG, Audi AG, and Porsche AG.

Unitronic Corporation Inc. is not affiliated with the Unitronics Group of Companies. To reach Unitronics Group please follow this link https://www.unitronics.com