Car Tuning
We are specialists in performance and economy tuning on mainstream cars and 4x4's. We are able to provide all stages of tuning from economy tuning right up to Stage 3 full custom conversions, mapping for towing and installation of speed limiters. With a specialist development program and dealers nationwide we are able to offer our full services in most places.
Van Tuning
We are specialists in performance and economy tuning on mainstream light commercial vans. With Vans running engine variants lifted straight from main stream cars, the tuning potential on these is the same as for cars. We are able to offer the full range of services including mapping for towing, installation of speed limiters, full custom upgrades etc.
We now have mobile dealers across South Wales..
We can complete most work at your home or work place.
HGV Tuning
We are specialists in performance and economy tuning on commercial fleet vehicles. With the ever increasing cost of fuel and increased strain on the haulage industry, we can offer solutions that help to substantially reduce running costs. With economy tuning, installation of limiters and the use of telematics, we are able to help companies take control of the spiralling costs of vehicle running costs.
Tractor Tuning
We are specialists in performance and economy tuning on agricultural vehicles. With an increase in power and torque, agricultural machinery becomes much more effective decreasing work times and increasing productivity. With an increase in tractability and reduction in fuel consumption it is an upgrade which saves time and time again. A Celtic Tuning power upgrade could also prevent the need to purchase new more expensive machinery to replace lower power units
ATV & Motorbike Tuning
Most modern motorcycles have untapped potential, but factory ECU maps are often detuned to cope with different climates, meet emissions rules, and fit product-range targets. ECU remapping removes these limits by adjusting the ECU’s maps—refining fuel, torque delivery, and throttle response—to safely unlock more power (bhp) and torque (Nm). It can also add stronger low-end pull, improve throttle control, and smooth out issues like a snatchy throttle, or low-rev surging.
Make a booking
Marine Tuning
We are specialists in performance and economy tuning on marine engines. The last 15 years of diesel development has not excluded marine applications, with our extensive knowledge and development programs we are able to provide tuning solutions for most marine applications both petrol and diesel. With most applications running electronic injection these days we are able to tune jet skis right up to super yachts.
Address:
Unit 1F Cwmgors Industrial Estate
Park Howard Road
Gwaun-Cae-Gurwen
Ammanford
SA18 1PA
Copyright © 2026 EC Performance all rights reserved.
