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
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Testimonial Vauxhall Reviews

Vauxhall Meriva 1.7 CDTi 98 bhp

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Posted on 14th February 2020, 22:49

Couldn't be happier.

Punctual, polite and friendly service. Car is far more responsive and as a bonus more economical.

No negatives whatsoever. Money very well spent.


United Kingdom

Not an actual picture of the tuned car

Vauxhall Mokka 1.6 CDTi 134 bhp

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Posted on 6th August 2019, 16:11

I recently had Celtic Tuning perform a re-map on my 2017 Vauxhall Mokka X CDTi. The work was carried out at my home by Scott, a credit to the company, in little over an hour.

The difference is incredible. The increased torque makes the car even more of a pleasure to drive and the increase in acceleration is breathtaking! I'm now hoping the fuel consumption will not suffer. Time will tell.

Celtic Tuning was recommended to me and I would now have no hesitation in recommending them myself.



United Kingdom

First time Remap

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Vauxhall Astra 1.9 CDTi 120 bhp Diesel

Posted on 5th May 2018, 20:53

This was the first time that I had tuned a vehicle at all. My tuner, Kevin, was incredibly knowledgeable and was able to provide advice and explain everything to do with the tune. He was professional and friendly. We took the car out for a spin to male sure all was good and I was happy with the tune before paying.

I could not recommend this company enough. And they did the whole thing at my front door. Great job guys!!

Sean Parkinson

Estate Agent

Sudbury, Suffolk, United Kingdom

Vauxhall Astra 2.0T VXR 236 bhp

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Posted on 20th October 2017, 22:22

Had my car remapped Monday at the head quarters and what a great set up they have with staff and modern building. Had my car on the dyno which you can watch from the waiting area like a nervous parent waiting for your child's exam results, unfortunately my car let me down today with the recirculation valve. (not holding boost)
So could only manage small increase on read out But saying that with a 4hr drive back home of course sticking to the speed limits, there was a different in boost and power...... I'm pretty sure once I get time and fix this part the improvements will stand out for sure........

Thanks again for the experience Celtic Tuning


Swindon, Wiltshire, United Kingdom

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