Celtic Tuning Reviews 

Had it done today on my 2017 abarth feels like a different car love it

Had remap of my mondeo few years ago and due to Ford recall it had felt flat.called Celtic and were so helpful, gave me appointment for next day,reflashed the original remap and made it right.cant recommend enough and didn't cost me another penny.hows that for service.

Amazing remap on my 335d BMW. Jamie the remap engineer arrived bang on time and went about his work, polite, knowledgeable and very efficient. Answered all my questions and completed the job in an hour. Unbelievable difference in the cars performance, power and torque, just a pleasure to drive. Can't recommend highly enough. Don't hesitate, just get it done.

I visited CT at Derby today to take a Mercedes C-Class C250d saloon for an Eco Map upgrade. This is the third vehicle CT have mapped for me - the others being a MB C-Class 250d Coupe & MB GLC 350d. Blake & Alan did a first class professional job. The car was smoother throughout the rev-range and livelier. It returned an indicated 60.1mpg on the trip home. 5⭐

Had my Hymer motorhome remapped today by Celtic tuning at York,went from 150bhp to 185bhp stage 1 remap.Once done took van out for a run and immediately noticed the extra power and torque also the comfortmatic gearbox seems to go through the gears much smoother,would highly recommend these guys as it’s made a good van better and only took about an hour.Thanks . Paul

Fiat 124 Spider can be a pig to remap. Two other well known organisations just couldn't do it at all. The power nerds at Celtic in Derby took an hour or so to take HP from 168 to 200. Torque from 200 to 221. Great difference in drive. Now with a performance exhaust as well, it's fabulous fun. Highly recommended.

Great service and results . Polite efficient service . They deserve 5stars.

Around jan or feb 2019 i got a standard remap flashed on to my seat leon fr tdi ecu by a local tech.

It was reasonably priced and delivered exactly what was advertised.

I know this because about 8 months ago i fitted water methanol injection, a hybrid turbo and visited the derby site where the techs remapped my car on the dyno.
The first pull was just to find the base which was about 224bhp.
I spent most of the day there and the cost was very reasonable considering that.

The site staff were friendly, plenty of free coffee and a tv to watch the live mapping.

Its been about 8 months and the 258bhp 365ft/lb map runs perfectly, no issues whatsoever 👌

I am very happy to recommend these guys.

I had my van remapped by dealer for this company the turbo went on it 12 months later another dealer tried to rectify the problem and put another turbo on it the van is still going into limp mode .My recommendation is never remap a transit mk7 2015 2.2
It's caused me nothing but cost and worry .

The guys at Celtic tuning derby tuned my bmw 1 series from 120 to 180 bhp. Plus added another 100 lbs torque. The drive home was unbelievable. Best money I have ever spent. Highly recommend them.

Went to Celtic Tuning’s Derby facility for a re-install of stage 1 remap on my SL63 AMG and for dyno testing.

Alan and Blake did an amazing job, keeping my informed of what they were doing through it all, and got it singing sweet at 646bhp.

Thank you both.

Had my MTA Abarth 595 modified by AforAlfa Aylesbury, and a Celtic Tuning map installed whilst there - The car felt amazing.. running at 232BHP and a dream to drive! As great as my car felt, I decided to down the 'Custom' tune/map! So, took a trip back out to Celtic Tuning Derby last week for a full custom tune! I'm stunned as to what a difference it makes to go down the Custom Map route!! - 262.8.HP and 291lb.ft! The car is still super smooth but with the added bonus of ridiculous amounts of power and torque!
A big shout out to the guys at CT Derby and not forgetting CT Newquay who spent their valuable time liaising with the Derby branch. Thanks Guys for everything!!!

I'd already had the car mapped elsewhere and wasn't happy. The DSG box wasn't right and it didn't pull higher up the rev range.
Celtic Tuning fitted me in and completely transformed the Van.
They fixed the gearbox map and picked up power all the way through the map.
Its really a great van to drive.
Great guys, really helpful and a great facility in Derby

Avoid, off-the-shelf map, nothing custom about it.

This company are liars and they know it; advertising a custom map when they full-well know you are getting an off-the-shelf generalised map which may destroy your car.

Had my car for 10 years with regular maintenance, worked fine. Took it to get mapped because I wanted a bit more power-within 4 days i got a constant DPF warning light. Got a new DPF just in case since mine was old anyway...3 weeks pass, car starts to stall under harsh acceleration. Took it to the mechanic again, EGR was completely destroyed despite being in good condition mere weeks prior.

Now, the car turns off under hard acceleration(turns back on the turn of the key no problem) giving an overboost warning and a not enough fuel pressure warning.

Celtic remapped both of my engine ECU’s and the Transmission ECU in my gorgeous Alfa Giulia Quadrifoglio. It’s such an amazing tune, the engine and performance is now so silky smooth with just endless power – in a word its phenomenal. Celtic must be the best company for these cars in UK, and the after care is literally the best I’ve experienced from any company anywhere. Such an amazing tune, such an amazing company, I can not recommend them more highly. If you have an Alfa Giulia Quadrifoglio, take it to Celtic you will not be disappointed!

I had my AMG GTC Roadster re-mapped from 557BHP - 660BHP. Celtic has a great service where they'll come to you to complete the re-map remotely. Once Kevin had completed the job, we went out for quick spin and the difference was significant to put it mildly! The job was done three weeks ago and I’ve just come back from a 1300 mile road trip, so wanted to be sure everything was OK before completing a review. The car was absolutely fabulous and hasn’t missed a beat. I would definitely recommend this service for AMG models. Thanks everyone.

Ok I don't have a AUDI,BMW,MERC or PORSCHE etc.
I have a 2011 2 ltr DCI Renault Grand Espace (or as C.T called it The Bus), which I've had for almost a year.
It drove ok but on the odd occasion it needed a bit more and when in the Highlands of Scotland, it needed longer legs.
So after doing some research I contacted Celtic Tuning for a quote and performance figures, after asking a few questions I booked a Stage 1Remap.
Ryan arrived early explained what was going to happen and got started, he even put up with my other questions.
After the Remapping was completed Ryan said take for a drive and instantly I could tell it was more responsive with more power.
I tried a couple of local hill and it certainly had longer legs, the real test will be in September when we go back to the Highlands, will update results
But even though it only been a few days since the remap, I can notice the difference in the drive.
C.T both in the office and on site were helpful and professional.
I would highly recommend them without hesitation.
Good Job

I'd just like to say that my Golf TCR was remapped by these guys and I am so so happy with the results, so much torque and improved performance all round, it seems like I'm driving a different car!.
Thankyou to Celtic Tuning for doing an awesome job.

Mixed feelings as initially thought there customer service was excellent and believed they where trying to sort my issue out.
I had a stage 1 remap in October 21 and initially thought this feels amazing and much quicker as It had already had a stage 1 but could not feel no difference, as time went on I noticed the car misfiring and had flat spots...thus wasn't noticed immediately as it still felt much better than what a previous company had done. I emailed explaining my concerns and the service seemed amazing and felt they wanted to sort it. They said that my coil packs needed replacing which i did at a cost off £200. Didnt resolve then they said spark plugs needed gapping which they did, but didn't resolve, then they agreed to put back to stock to see if the issue would resolve its self, however my father fell ill so was not able to get it done immediately. A friend suggested aet motorsport might beable to help. They immediately said its got too much boost and that they didn't belive it was hitting the bhp that I was told(242bhp) infact it was 226 whp whick when converted to bhp it was running at a shamefully 210 bhp.
I decided to go with aet motorsport and they recommended dsg map as well to cope with the extra bhp.
Amazing difference and 100% spot on over a month later.

Note celtic did not recommended the tcu (dsg gearbox) needed remapping .

They refuse a refund because they didn't put back to stock, but I wasn't necessary expecting a full refund but this seems like a school boy error from such a big company.

They doo seem genuine guys that wanted to help so that's why I have mixed feels

Mapped my Audi s3 amazing customer service everyone’s polite and helpful, all very knowledgable best service you can expect