Autotuner Update Nissan/Infiniti MG1CS623 ECU Mail-in Unlocking

By | May 21, 2026

Nissan & Infiniti (MG1CS623): Live on Bench!
The new 3.5L Twin-Turbo V6 (replacing the legendary V8) has arrived on your AutoTuner Tool! Tune the massive torque of the absolute latest Japanese titans.

This protocol grants you exclusive access to the absolute latest generation of luxury and off-road SUVs from the Nissan/Infiniti group (2024-2025 models). Say goodbye to the V8, and hello to the brand-new, hyper-powerful 3.5L Twin-Turbo V6 engine! You now have the perfect solution to boost the massive torque required by these heavyweights, including the highly exclusive Nismo variants.

 

The secure workflow (Mail-in -> Bench): To guarantee absolute safety on these latest-generation ECUs, an initial unlock is required:

Mail-in Unlock: The ECU must first be sent to our facility for a highly secure unlock by AT engineers.

Bench: Once the ECU is returned to your shop, you have total control to comfortably read and write the vehicle via Bench.

Exclusive Supported Vehicles (3.5T V6 Engine):

Nissan: Patrol & Armada (2024-2025) – Including Nismo versions!
Infiniti: QX80 (2025)

 

Key Features:
Type: Engine Control Unit (ECU)
Mode: BENCH NR
Readout: Calibration
MCU: TC389
Read time: 2min
Write time: 1min
Checksums correction
Backup creation
Mail-in Unlock required

Compatibility List:*
Infiniti Model: QX80 (2025)
Infiniti Engine: 3.5T V6
Nissan Models: Armada (2024) // Patrol (2025)
Nissan Engines: 3.5T V6 / 3.5T V6 (Nismo)

autotuner nissan mg1cs623 mail in unlocking