COVID19 UPDATE - We are keeping a close eye on the current situation and in line with latest government guidance we will remain operational until further guidance clarifies otherwise. If you have any questions, concerns or wish to postpone please do give us a call on 03336000669. We do still have our self-tuning options available: for those vehicles which are supported.


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Dyno Developed Software & Unrivalled
Technical Support.


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An ECU Remap for your exotic car
can significantly improve your driving


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ECU Remapping your Turbo Diesel has
never been so easy. With improved power
and fuel economy one simple step away.


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Tuning your truck can improve your pulling
power and fuel economy. See how Celtic
Tuning can help you and your fleet.


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Towing power is essential for any
farmer. Improve the power and
fuel economy of your tractor with
an ECU Remap.


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Testimonial Renault Reviews

Renault Megane 1.5 dCi 108 bhp

Check Renault Megane stats

Posted on 19th February 2020, 19:43

Had my Megane remapped at my own house on 31st of January. It's been 3 weeks since then. Car was quite quick before for a little 1.5 diesel. After the remap was done which only took half an hour, it is astonishing!

The car feels faster than most 2.0 litres and completely changed the way it performs. Before there were flat spots especially is 1st. But now it just pulls effortlessly and smoothly is every gear. Fuel economy has gone up a bit too! Easy 55mpg.

If you're considering remapping your car then I would very much recommend Celtic Tuning!

Patrick Crawford

Commercial Body Builder, Horton Commercials

Poole, Dorset, United Kingdom

Renault Master 2.5 DCi 100 bhp

Check Renault Master stats

Posted on 5th September 2019, 09:44

Not an actual picture of the tuned car

Thank you so much for remapping our van, it's made a real difference and the customer service was fantastic!


United Kingdom

Renault Traffic 2.0 DCi 115 bhp Diesel

Posted on 15th January 2018, 17:52

I had Kevin out today to carry out a stage one remap on my Renault Traffic works van, he was very knowledgeable and a credit to the company.

Well what can I say, the remap has totally transformed my van, the sluggish pickup has gone and it has become a lot more drivable.

Highly recommend Celtic Tuning to any one contemplation have a remap done.

M Dunston

Builder, M Dunston Building Contractor

Yeovil, Somerset, United Kingdom

Not an actual picture of the tuned car

Renault Clio 1.5 dCi 86 bhp

Check Renault Clio stats

Posted on 13th March 2017, 20:11

Not an actual picture of the tuned car

Had my Clio re-mapped last Thursday, a meagre 86bhp to 111bhp, can't believe the improvement in performance and fuel economy.

Ok it's not a high performance car but my acceleration is so much better and I am getting 63mpg, highly recommend Celtic Tuning, great service.

Paul Nash

Retired/ part time taxi driver, White River Cars

St Austell, Cornwall, United Kingdom

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