The Holden RG Colorado is a robust and versatile utility vehicle known for its towing capacity and off-road capability. Tuning this model can significantly enhance its performance, particularly for those using it in demanding conditions or for intensive tasks. This article explores the outcomes of tuning the RG Colorado, addresses the feasibility of DIY ECU remapping, discusses the benefits of remapping a diesel engine, and outlines potential issues associated with diesel engine remapping.

What are the Results of the RG Colorado Tune?

Tuning the RG Colorado typically results in increased power and torque, improved throttle response, and better fuel efficiency. Specific gains can vary, but owners often report enhancements in:

  • Power Output: Increase in horsepower and torque, making the Colorado more capable of handling heavy loads and tough terrain.
  • Fuel Economy: Optimization of fuel injection and timing can lead to more efficient fuel use, reducing overall operating costs.
  • Driveability: Smoother acceleration and more responsive handling, particularly beneficial for those who use their Colorado for both daily driving and adventurous outings.

Explore our tailored tuning solutions for the RG Colorado at Colorado 7 Remap.

Can I Remap My ECU Myself?

While it is technically possible to remap your ECU yourself, it requires specific technical knowledge and the right tools. The process involves adjusting the software within the engine’s ECU, and errors can lead to significant engine damage. Therefore, it is generally recommended to have your ECU professionally remapped to ensure the adjustments are safe and effective.

RG colorado on the dyno ready for a remap and custom tune
A 2018 Holden Colorado in red, towing a white caravan along a mountain road, showcasing its towing capacity against a backdrop of lush green mountains and clear blue sky.

Is It Worth Remapping a Diesel Engine?

Remapping a diesel engine is often considered worthwhile due to the substantial benefits it can offer, including:

  • Enhanced Performance: Diesel engines respond well to remaps due to their high torque output, making significant gains in power and efficiency.
  • Improved Fuel Economy: Remapping can make a diesel engine run more efficiently, often resulting in lower fuel consumption.
  • Customization: Remapping allows for adjustments based on personal driving styles and requirements, such as enhanced towing capacity or optimized off-road performance.

What are the Problems with Remapping Diesels?

While there are many advantages to remapping diesel engines, there are also some potential downsides to consider:

  • Warranty Issues: Remapping can void vehicle warranties if not approved by the manufacturer.
  • Increased Wear and Tear: Higher outputs can lead to faster wear of engine components, potentially reducing the lifespan of the engine. This is all dependant on who has tuned your vehicle and the end power goal
  • Legal and Insurance Implications: In some regions, remapping may affect the legal status of the vehicle regarding emissions standards. It can also impact insurance policies, sometimes leading to higher premiums.


Tuning your RG Colorado can transform its performance, making it a more powerful and efficient vehicle suited to a variety of needs. While DIY remapping is technically possible, the complexities involved mean that professional remapping is usually the safer and more reliable option. Considering the benefits and potential drawbacks of remapping a diesel engine will help you make an informed decision to ensure your Colorado performs at its best. For expert remapping services, visit our RG Colorado Remap page.