Navara NP300 — Stage 2 ECU Tune
- 38% power increase
- 25% torque increase
- Boost control optimization
- High pressure fuel pump tuning
- Fuel injector optimization
- Drive by wire calibration
This 2015 Navara NP300 D23 came through with the typical supporting hardware for a reliable Stage 2 diesel tune: snorkel, full exhaust kit, and upgraded cooler pipes. The factory ECU was recalibrated to suit, with boost sitting at 2 bar and fuelling mapped to keep EGTs sensible under load.
The workshop recorded 86 kW at the wheels and 338 Nm after the tune. It's a conservative but usable result for a ute that sees regular towing and highway work. The exhaust and cooler pipes make a tangible difference to how the D23 holds power in our summer heat, and the tune keeps the delivery linear rather than peaky.
Calibration focused on drivability and thermal management over outright numbers. The torque curve sits flat through the mid-range, which is where these rigs spend most of their time when loaded or on long hauls.
Is 2 bar of boost safe on the factory D23 turbo and engine?
Yes, with the supporting mods in place. The snorkel, full exhaust, and cooler pipes help manage intake temps and backpressure, and the tune is calibrated to suit the factory hardware without exceeding thermal or mechanical limits.
What's the real-world difference with this Stage 2 setup?
Improved throttle response, better torque delivery through the mid-range, and more consistent power when towing or climbing. The exhaust and intercooler work reduce heat soak, which keeps the tune effective in stop-start traffic and extended highway runs.
Can this tune run on standard Australian diesel?
Yes, it's calibrated for pump diesel. No special fuel required.
Workshop & Dealer Access
Protunes supplies ECU calibration files exclusively to approved workshops, tuners, and dealers throughout Australia. Platform: Factory.
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