Dyno Developed Software & Unrivalled
Technical Support.


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


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


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


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 Mercedes Benz Reviews

Mercedes Benz E Class E320 CDI 204 bhp Diesel

Posted on 2nd July 2019, 15:40

Lol, where do I start ??? Took a trip to Newquay yesterday for a rolling remap at HQ.

The lady n gents where very very helpful and accommodating and I was extremely well-cared and catered for! The tech guys spent around 3 1/2 hours on my car and between them and myself established that my upgraded injectors were, in fact, wrong and my original injectors would suit better for now and that I need some additional parts but they did manage to tweak my car a bit more to the upgrades I already have and what a difference yet again to the car !! BUT they couldn’t remap my car not the day to what it was planned for and despite the guys spending way more time on my car than scheduled, I was not charged a penny and I really appreciated this along with all the time n effort the whole team put in to make me feel so relaxed after a 5 hour drive from home!

Very very professional, kind n friendly team all round !!! Would very highly recommend Celtic tuning to anyone !!!! 😎👍

Chris hughes

Notts, Uk, United Kingdom

Not an actual picture of the tuned car

E220 stage one remap

Check Mercedes Benz E Class stats

Mercedes Benz E Class E220 CDI BlueEFF 167 bhp Diesel

Posted on 25th June 2019, 13:47

Not an actual picture of the tuned car

I had this remap done a week ago and I can confirm that it has been very positive. It pulls much better in all gears, is very smooth and effortless and really goes when you ask it to.

I am not in a position to comment on the MPG yet, however early indication shows an improvement.

Communication before the appointment was good. The service on the day was spot on, the engineer was friendly and appeared to be very knowledgeable and was on time.


United Kingdom

Mercedes Benz SL SL 500 382 bhp

Check Mercedes Benz SL stats

Posted on 24th June 2019, 10:58

Last Monday I sent you the ECU from my SL500 which I received back Wednesday. I have today refitted it to my car and gone for a wee drive.

I am absolutely delighted with the results of your work.

The throttle response is much improved and the power curve is just as smooth as can be, I wouldn't have believed that just 30 odd bhp would be that noticeable!

I will certainly be recommending you to others!
Next one to do is my 2017 Vito 116 van ...👍


United Kingdom

Not an actual picture of the tuned car

Mercedes Benz E Class E350 BlueTEC 254 bhp

Check Mercedes Benz E Class stats

Posted on 13th June 2019, 10:05

Not an actual picture of the tuned car

I had a mobile visit from a nice technician who drove all the way from Cornwall to Bedford on our pre-arranged date and time. Remapped my ECU and totally transformed my E350 Bluetec.

The car runs smoother than when it was new. HP and more impressively the torque increase has made a huge difference. I would recommend Celtic Tuning to anyone. Fantastic customer care and very knowledgable.

Thank you guys for looking after me. Andrew Oliver

Andrew Oliver

IT Consultant, Synthetic Synapse

Bedford, Bedfordshire, United Kingdom

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