Colorado — Stage 2 ECU Tune
- 44% power increase
- 62% torque increase
- Improved fuel efficiency
- Enhanced boost control
- Optimized fuel delivery
This 2019 Colorado 2.8 diesel ran a proper Stage 2 hardware package before calibration: upgraded injectors, high-pressure fuel pump, boost solenoids for wastegate control, and drive-by-wire tuning. Factory ECU.
Result was 103 kW at the wheels from a baseline 71.5 kW, with torque lifting from 252 Nm to 409 Nm. The jump in usable torque makes a real difference for towing and loaded work, especially in the low and mid-range where these trucks spend most of their time. The fuel and boost hardware gives the tune room to move without pushing factory components past their limit.
Calibration was kept safe for daily use and long highway runs. Summer heat and loaded driving were accounted for in the fuel and timing maps.
Why the upgraded fuel pump and injectors on a Stage 2?
The factory fuel system on the 2.8 becomes a restriction once you're pushing past 350 Nm. Upgraded injectors and a high-pressure pump give the calibration enough fuel delivery to support 409 Nm safely without running the injectors at 100% duty cycle.
Is 409 Nm safe for the transmission and drivetrain?
It's well within tolerance for the Colorado's six-speed auto and drivetrain when the torque curve is controlled properly in the tune. Factory rating is conservative, and this level of torque is common in fleet and towing applications overseas.
What's the benefit of the boost solenoid setup?
Electronic wastegate control via solenoids gives much finer boost regulation than the factory mechanical setup. It allows the tune to hold boost more consistently across the rev range and respond faster to throttle changes.
Workshop & Dealer Access
Protunes supplies ECU calibration files exclusively to approved workshops, tuners, and dealers throughout Australia. Platform: Factory.
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