Mitsubishi Triton ML/MN Diesel Tuning & Servicing
The ML and MN Triton (2006-2015) run Mitsubishi’s 2.5-litre 4D56 common-rail diesel — an older but capable platform we tune conservatively and service around its well-known weak points.
We tune every ML/MN Triton in-house on the factory ECU, on our own dyno, matched to your exact truck rather than a generic off-the-shelf file.
The 4D56 is known for suction control valve (SCV) faults, a timing belt that must be replaced on schedule, and EGR and intake carbon build-up. We tune and service with those traits front of mind, never against them.
Already know what you need? Browse our Triton performance parts & upgrades. Got the newer model? See our MQ/MR Triton tuning & servicing page.
Mitsubishi Triton ML/MN diesel engines we tune
Why choose Willy’s for your Mitsubishi Triton ML/MN
Performance Tuning
Custom, dyno-verified ECU tuning developed in-house on the factory ECU for the ML/MN Triton’s 4D56 diesel.
- Custom in-house tuning of the 2.5L 4D56 (131kW/400Nm), conservative and matched to the engine’s condition.
- Dyno-verified before-and-after results developed for your specific truck, fuel and use.
- Real-world focus on low and mid-range torque for towing and loaded driving.
- Engine condition checked first — SCV and timing-belt history are assessed before any tune is recommended.
Servicing & Repair
Servicing and repair built around the 4D56’s known SCV, timing-belt and carbon issues.
- Suction control valve (SCV) diagnosis and replacement on the 4D56.
- Timing-belt replacement kept to schedule — a critical service item on this engine.
- EGR and intake carbon cleaning for the 4D56.
- Routine logbook servicing and driveline work on the ML/MN platform.
Why drivers trust Willy’s Workshop
Mitsubishi Triton ML/MN diesel FAQs
What is a Mitsubishi Triton ML or MN?
ML/MN or MQ/MR Triton — which one do I have?
What are common problems with the Triton’s 4D56 engine?
Is it worth tuning an ML or MN Triton in 2026?
How much does ML/MN Triton tuning cost?
Book your Mitsubishi Triton ML/MN in
We tune and service across South-East Queensland — choose the workshop nearest you.
