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 Jaguar Reviews

Spectacular upgrade

Check Jaguar XF stats

Jaguar XF 3.0d V6 271 bhp Diesel

Posted on 21st March 2019, 15:38

I rate Celtic Tuning very highly. This is a no-nonsense professional company. No, if's or but's they delivered excellent customer service and a brilliant remap.
My car already had great torque and plenty of grunt but Celtic Tuning made an awesome car better. The cost of the remap was very competitive. I will use this company to do all of my performance upgrades in the future.
I am very happy!

Barry Thompson

Local Government Officer

United Kingdom

Not an actual picture of the tuned car

What a difference!!

Check Jaguar XF stats

Jaguar XF 3.0d V6 236 bhp Diesel

Posted on 19th February 2018, 22:34

This is the first time I have used Celtic Tuning but I would definitely use them again.

The guy who came to do the remap was called Cameron. Courteous, friendly and even put up with some mindless questions from me. A top bloke.

The job was completed in an hour, exactly as he told me it would. As for the car, I almost had to make sure it was the same one. What a difference. In standard tune it always had quite a bit of torque but now it is unreal. And from just 1750rpm it just starts pulling harder and harder, with no dips in the power delivery at all. All the way to the red line. Very un-diesel like!! And It is so much smoother than before. So, thank you CT. You will be recommended by me to anyone interested in doing the same thing.


United Kingdom

Jaguar XF 3.0d V6 271 bhp

Check Jaguar XF stats

Posted on 1st September 2017, 20:31

Amazing transformation of an already good car. Now drives like it should, power everywhere.

Highly recommended

tommy cleary


widnes, United Kingdom

Not an actual picture of the tuned car

Jaguar XF 2.2d 197 bhp Diesel

Posted on 24th August 2017, 09:16

I had my car re-mapped at one of Celtic's dealers, lakeside Garage near Heathrow. My car was good before and I was getting good fuel economy, but after the re-map not only has it got more grunt from the moment you pull away it is much smoother drive with more power it has made a very good car a car that I am more than happy with and I will be going back if I ever change my car again straight from the garage I buy from to get another re-map.

Thanks guys great fast & friendly service

Barry Key

Fleet Manager

Basingstoke, Hampshire, United Kingdom

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