Remap / Tuning

Garej Arwyn Cyf are an authorised Celtic Tuning Dealer


About Celtic tuning

Celtic Tuning are specialists in the development of engine management software where we have a specialist team of graduate level software developers. All of our software development is carried out in house using our state of the art facilities which very few companies can rival, even internationally.

Development Facilities

We have 2 state of the art 4WD linked dynamometer cells with full engine analysis capabilities to ensure our developments are providing you with the best power gains on the market whilst maintaining optimum reliability for your engine.

Our investment in dyno facilites means that our development programmes can work side by side allowing us to cover a wider range of makes and models.

CelticTuning Worldwide

We have a dealer network spanning 19 countries we have an unrivalled level of experience in working with engines operating in all working conditions and environments.

The major benefit of developing our software is that we are able to provide custom software for the clientele looking for even bigger power gains.

Customer Satisfaction

We pride ourselves on customer satisfaction and it is at the forefront of our operations. With reliability, drivability and satisfaction being our target we are sure you will be delighted with the service we offer.

For more information on services offered, visit