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Unitronic® is proud to release its Unlocked DQ381.2 TCU solution, allowing those with locked "401" TCUs access to Unitronic's renowned TCU Performance Software. Now, MK8 GTI®, Golf R® and 8Y S3® enthusiasts can finally experience increased clutch clamping pressure, optimized gear shifts, Advanced Torque Management, dual setpoint adjustable launch control, gear display, and much, much more thanks to Unitronic's unlock solution and TCU Performance Software!
WHY SWAP TO AN UNLOCKED TCU?
Some 2022 and many 2023+ vehicles built after 02/2022 were equipped with TCUs which have a locked "401" bootloader, previously limiting tuning options. Unitronic's Unlocked DQ381.2 TCU comes ready to plug-n-play into your vehicle with Unitronic's TCU Performance Software.
With the proper tools, equipment, and guidance, this TCU swap is straightforward for most. For added convenience, Unitronic also offers an optional Service Kit, which includes all necessary fluids and hardware needed to detach the TCU from the mechatronic unit and perform a gearbox service. At this stage, enthusiasts can also opt to replace the failure-prone plastic oil tubes with Unitronic's high-strength CNC machined Oil Tubes as well.
As part of Unitronic’s commitment to delivering thoroughly tested and reliable performance solutions, extensive field testing was conducted prior to this release. Special thanks to Unitronic Authorized Dealer, ACM Technik, for their assistance with validations throughout.
NOTE: Unitronic TCU Performance Software is required to use this unlocked TCU. You must have already purchased Unitronic TCU Performance Software, or purchase it alongside this upgrade. For new and existing ECU + TCU customers, DSG® Combo Discounts of up to $150 in SAVINGS are available.
When purchasing this upgrade, please be prepared to provide Unitronic with your TCU ID, TCU Revision, and VIN to ensure the unit can be properly configured for your specific vehicle.
TRANSMISSION TUNING BENEFITS
Pairing this Unlocked TCU with Unitronic Performance Software delivers significant improvements for both daily drivers and performance enthusiasts alike. From enhanced drivability to increased transmission responsiveness and optimized shift strategies, this combination transforms the overall driving experience — whether you're commuting or pushing your car to the limit. Key benefits include:
• Increased clutch pressure (up to 600Nm)
• Advanced torque management
• Faster, crisper gear shifts
• Optimized Drive and Sport modes
• Adjustable dual-setpoint Launch Control
• In-dash gear display and more
• Explore the full list of TCU tuning benefits HERE.
SUPPORTING HARDWARE UPGRADES
For optimal performance and drivetrain stability, enthusiasts can upgrade to a Unitronic Street or Race DQ381 Dogbone Engine Mount. Designed to eliminate the slop present in factory-style mounts, these kits are built to withstand the forces encountered during hard launches and aggressive driving — whether on the street, drag strip, or road course. The result is reduced wheel hop, crisper shifts, and improved overall control, all while maintaining comfortable levels of NVH (noise, vibration, and harshness) for daily use.
INSTALLATION NOTES
Unitronic recommends reviewing the full installation guide ahead of time to get familiar with the process, tools, and components involved in performing this TCU upgrade. While installation is straightforward for experienced enthusiasts, professional installation is still recommended.
APPLICATIONS
2022+ VW® Golf R® 2.0TSI® EA888.4 MQB® EVO
2022+ Audi® S3® 2.0TSI® EA888.4 MQB® EVO
2022+ VW® GTI® 2.0TSI® EA888.4 MQB® EVO
*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.
