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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


Diesel Tuning - copy

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 Volkswagen Reviews

Vw Sleeper killer

Check Volkswagen CC stats

Volkswagen CC 2.0 TDI 174 bhp Diesel

Posted on 14th June 2021, 10:33

After purchasing the CC Black R-Line edition. Could not wait for this to be done, went for the 174bhp as better gains than the 181bhp. And the power is awesome just what the car needed. Run a couple of test times 0 50km 3.2s 0 80km 5.6s not bad, big respect to the boys at Celtic for keeping the price down number one for me.


United Kingdom

Not an actual picture of the tuned car

Volkswagen Transporter T6 2.0 TDi EU6 150 bhp

Check Volkswagen Transporter T6 stats

Posted on 20th August 2020, 16:20

Thank you CT team for rectifying my van.For sorting out the remap done elsewhere, and saving me a large amount of money so that I don’t have to replace my clutch, caused by the previous remap. Not only did you fix the problem but you gave me a better, more usable map with more power. To me, that’s worth the small cost all day long! Thank you


United Kingdom

Volkswagen CC 2.0 TDI 174 bhp

Check Volkswagen CC stats

Posted on 29th February 2020, 17:38

Got my CC remapped the day I bought it! The added mid-range power is excellent. Celtic Tuning quote 228hp, but I've yet to test it out on a Dyno so unsure of the exact number.

What I did test however, was the 0-60 times. Standard the car is 8.2s to 60 (8.4 to 62) and I got the car to 60 in 6.2 & 6.5s on the two runs I've done so far (in the wet!!).

To say I'm happy is an understatement. Top job!


Videographer, Picturecell Productions

Aberdeen, Grampian, United Kingdom

Not an actual picture of the tuned car

Volkswagen Lupo 1.6 GTi 125 bhp

Check Volkswagen Lupo stats

Posted on 23rd May 2019, 09:54

Not an actual picture of the tuned car

Great service overall and an excellent technician (Kevin), he really was very good at his job and if you're lucky enough to get him, rest assured you won't be disappointed.

The Lupo has been transformed, the biggest difference being throttle response you don't get a massive bhp increase obviously but coupled to other mods the remap is the icing on the cake.


Luton, Bedfordshire, United Kingdom

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