COVID19 UPDATE - After the government announced the relaxation of social distancing for the service industry, we can confirm that from July 4th our mobile service will be fully operational. If you were placed on our waiting list, please feel free to contact us on 03336000669 to schedule your appointment or our team will be working through the list in due course. We do still have our self-tuning options available: Thank you for your patience during the past few months.


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.


previous arrow
previous arrow
next arrow
next arrow

Testimonial Audi Reviews

Audi A6 2.0 TDI Ultra 187 bhp

Check Audi A6 stats

Posted on 30th August 2018, 09:23

Highly recommended, the improvement on my Audi A6 S-Line Ultra is amazing, really pleased with remap and very noticeable gains, more than I expected, yet better fuel economy. Friendly staff and service was top quality.

Thanks to the team 👍

Andrew Stone


Newquay, Cornwall, United Kingdom

Not an actual picture of the tuned car


Check Audi Q5 stats

Audi Q5 2.0 TDI 170 bhp Diesel

Posted on 22nd June 2018, 14:59

Not an actual picture of the tuned car

Just had my Q5 tuned last week. It is like a new car. Much smoother and masses more pull from low revs.

Nice engineer took about 40 mins to upload it and tell me about the guarantee and how I could have it taken back to standard for free within 14 days. No chance. Best thing I have done to a car.

Early days yet but the computer is telling me we are getting more mpg too. Can't fault it.

Well done Celtic.

Peter Welburn

, Rossbuild

Kimcote Lutterworth, Leicestershire, United Kingdom

Audi A4 2.0 TDI CR 134 bhp Diesel

Posted on 20th June 2018, 15:53

My car has been remapped from 134bhp to the stage 1 at 206bhp and wow what a difference!! I am very pleased with the results!!

I only had a done a few days ago and can already notice a difference with the fuel consumption and the initial power response is greatly improved! Excellent customer service and very prompt and on time.

Overall I would rate Celtic Tuning very highly and would recommend to anyone wanting a good reliable service!!

Thank you


Poole, Dorset, United Kingdom

Not an actual picture of the tuned car

Remap 138bhp to 188bhp

Check Audi A4 stats

Audi A4 2.0 TDI PD 138 bhp Diesel

Posted on 25th January 2018, 12:45

Not an actual picture of the tuned car


Yes the technician has been and completed the remap and i have payed via card. The difference is very noticeable and i'm very happy with the service. The technician was brilliant and I will recommend to fellow car enthusiasts...

Thanks again..

Kindest regards



United Kingdom

Back to Makes Add new Testimonial

Select Your Vehicle

or find your vehicle below

   Return to reg. search