At Celtic Tuning, we offer a complete range of Holden ECU remapping and chip tuning services for both petrol and diesel models. We write all our software in-house and test it fully on a dynamometer. This ensures personalized upgrades that improve performance, drivability, and reliability.

Our Holden ECU remaps give you quicker throttle response, more power, and smoother power delivery. For diesel engines like the Colorado, customers can also enjoy better fuel efficiency. This makes our remaps great for work and everyday driving.

We support popular Holden models, including the Colorado pickup (2012>) and the Commodore VE (2006-2013). Whether you want more pulling power, lower fuel costs, or a more enjoyable drive, our tuning software provides proven results.

Our software is fully developed and tested on our advanced 4WD Dynocom rolling roads. With two 4WD Dynocom dynos at our headquarters in Newquay, Cornwall, and another at our Derby location, we ensure precision, consistency, and top-quality results.

For your peace of mind, we also offer a mechanical breakdown warranty and a 14-day money-back guarantee.