Autotuner Update Isuzu Holden Delphi 4J ECU via OBD VR

By | March 11, 2026

Autotuner released a BETA OBD protocol for Mighty 4JJ1.

AT just added support for the Delphi 4J ECU powering the legendary 3.0 TD engine.

Supported Models:

  • Isuzu D-Max & MU-X
  • Holden Rodeo

Method: OBD Virtual Read (BETA) Fast and efficient! Get the original file from our server directly via the OBD port. Try it out and let us know your feedback!

Key Features:
Type: Engine Control Unit (ECU)
Mode: OBD VR
Readout: Calibration
MCU: MPC561
Write time: 2min
Checksums correction

Compatibility List*:
Holden Models: Rodeo (2002+)
Holden Engines: 3.0 TD (4JJ1)
Isuzu Models: D-Max / Vcross (2006+) / MU-X (2013+)
Isuzu Engines: 3.0 TD (4JJ1)
*The list may evolve over time.

autotuner Delphi 4J Isuzu by OBD