Professional ECU Remapping & Car Remapping Services in Ireland

Car remapping gets more power, more torque and better fuel economy from the car you already own, by rewriting the software in its engine control unit. We do it at our workshop in Dungarvan, Co. Waterford, and every map is written in-house for your car by a qualified motorsport engineer, then checked on our all-wheel-drive dyno.

4.8 out of 5 from 189 Google reviews

Remap Calculator

See what your car makes now and after a remap, then book it in.

  • All work carried out by a qualified motorsport engineer
Rather talk it through? 087 744 2633

Remap Calculator

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Experience up to a 35% increase in brake horsepower (BHP) with our Stage 1 Remap, transforming your vehicle's acceleration and overall performance

Achieve up to 50% more torque, providing stronger pulling power and better response across the entire rev range

Enjoy up to 20% improvement in fuel economy, making your vehicle more economical for daily driving

Alientech KESS3 ECU programming kit open in its case

What is ECU Remapping?

Your car's ECU decides how much boost, fuel and ignition advance the engine gets at every moment. Manufacturers set it up to suit every market, every fuel and every driver at once, so most engines leave the factory with power in reserve.

ECU remapping rewrites those settings for your car. At JTK Remapping every remap is custom: we read the software from your car, adjust it to your engine and what you want from it, and write it back. Nothing is taken off a shelf, and we measure the car on our dyno before and after, so you see what it gained.

What the Dyno Shows Us

Our dyno is in-house and all-wheel drive, so front-wheel-drive, rear-wheel-drive and 4x4 cars are all measured properly. On the rollers we:

  • Measure and verify power gains in real time
  • Fine-tune the map for the best performance
  • Check temperatures and pressures stay safe
  • Confirm the fuel economy improvements
  • Test how the car drives under different conditions
White Mercedes-AMG A45 on the dyno rollers in the JTK workshop

Petrol, Diesel and Automatic Cars

A turbo petrol usually gains the most power, and a remap sharpens the throttle and fills in the mid-range. A diesel gains torque, which you feel when overtaking, pulling a trailer or climbing a hill in a high gear, and it often uses less fuel doing it. If fuel economy matters most, ask about an economy remap.

Automatic and dual-clutch gearboxes have their own computer, and it can hold back the extra torque a remap adds. DSG/TCU remapping sets the gearbox up to match, with quicker shifts as a bonus.

ECU Remapping Stages

Pick the stage that suits how you use your car. Stage 1 is software only, while Stages 2 and 3 add hardware, and you can go straight to whichever you want. Our performance remapping page goes into each stage in detail, and our custom exhausts cover the exhaust a Stage 2 car needs.

JTK

1

Stage 1 Remap

Software only, on your car's factory hardware. It suits daily drivers who want more performance while keeping the car reliable and economical.
Performance gains include:

Up to 30% increase in power and torque
Sharper throttle response
Improved fuel economy
Better drivability

2

Stage 2 Remap

For drivers who want a bigger step, Stage 2 adds hardware to the remap. It works especially well on turbocharged cars and includes:

Advanced software optimisation
Hardware upgrades where needed
Better boost control
Refined fuelling

3

Stage 3 Remap

Our most complete package, with major engine upgrades and a map built around them for maximum performance. It includes:

Custom component installation
Advanced boost management
Specialised fuel mapping
Maximum power optimisation

Most Popular Manufacturers

From M4s and Golf Rs to an A4 TDI on the school run, we remap every make and model, petrol or diesel. Alongside the 3 below, other makes we remap include Skoda, Ford, Mercedes-Benz, SEAT, Cupra and MG.

golf r remaps

Volkswagen Remapping Services

Unleash the full potential of your Volkswagen with our expert remapping services. For performance enthusiasts, our tuning solutions transform vehicles like the Golf R and GTI across all generations (Mk7, Mk7.5, and Mk8), delivering extraordinary power gains. The Polo GTI and T-Roc R also respond exceptionally well to our performance mapping, offering a thrilling boost in performance.

For diesel drivers, we've developed specialized maps for the Golf TDI, Tiguan TDI, and Passat TDI range, focusing on both power delivery and fuel efficiency. These remaps not only enhance torque for better overtaking but can also improve your daily fuel economy by up to 20%.

Volkswagen Remapping Services
audi remapping ireland

Audi Remapping Services

As Ireland's exclusive APR distributor, our Audi tuning expertise spans the entire range. Performance enthusiasts will appreciate our comprehensive solutions for the RS4, RS5, and the potent RS3, where our remapping unleashes significant power gains while maintaining factory-level reliability. The S3 and SQ5 also benefit from our performance-focused mapping, delivering sharper response and enhanced power delivery.

For diesel Audi owners, we've perfected our remapping solutions for the popular A3 TDI, A4 TDI, A5 TDI and A6 TDI models, along with the Q5/Q7 TDI range. Our maps focus on enhancing both torque and efficiency, making these already capable vehicles even more impressive in real-world driving conditions.

Audi Remapping Services
bmw remapping ireland

BMW Remapping Services

Our BMW remapping solutions cater to both high-performance petrol models and efficient diesel variants. Performance enthusiasts with M3s, M4s, and the iconic M140i will experience significant gains in power and response. The 335i and 435i models also respond exceptionally well to our performance mapping, delivering near-M car levels of performance.

For diesel BMW owners, our specialised maps for the 320d, 420d, and X5d models focus on balancing performance gains with efficiency. These remaps not only enhance everyday drivability with improved torque delivery but also maintain the sophisticated driving characteristics that BMW is famous for.

BMW Remapping Services

How Do I Book a Car Remap?

Put your car into the Remap Calculator to see what its engine is likely to gain at each stage, then press Book Your Remap and we'll get back to you to arrange a day.

  • APR Dealer Ireland
  • Racing line
  • Scorpion
  • Milltek Dealer Ireland
  • Airtec
  • 034 Motosport Logo
  • Akrapovic
  • ARP
  • Autotech sport tuning
  • Autowatch
  • Bilstein
  • Brembo
  • Littco Turbos
  • ECS Tuning
  • Ferodo Racing
  • H&R Logo
  • GFB
  • KW
  • Maxton Design Dealer Ireland
  • Ohlins
  • NGK spark plugs
  • Powerflex
  • Quaife
  • Race Chip
  • Ramair
  • Sachs Performance
  • Vagbremtechnic
  • Wavetrac Australia

We're Ireland's Exclusive APR Performance Specialist

We're the official APR dealer for the Republic of Ireland, with APR tuning for Volkswagen, Audi, SEAT, Skoda and Porsche. APR's software and hardware are a proven route to more power on those engines, and we fit the full line-up here: direct replacement turbocharger systems, intake filters, brake lines, throttle boosters and suspension control unit upgrades.

Call 087 744 2633 to talk through what APR can do for your car.

At our workshop in Dungarvan

What happens on the day

Check your car in the Remap Calculator or give us a call, then book it in. On the day your car goes on our 4WD dyno for a before run, the map is written for your engine, and an after run shows you the difference in power and torque.

Trusted by thousands of customers

4.8 out of 5

189 Google reviews

Read our Google reviews
  • Perfect experience from start to finish. Very easily dealt with. Got my mk7 golf r remapped difference is like night and day. Can’t thank the team enough
    Pa P.
  • Great service, really happy with the remap and downpipe. Car feels brilliant now - highly recommend!
    Cian W.
  • So I got a hybrid turbo from muchboost installed in my Mercedes c220 and was advised to get a custom remap on a dyno so I contacted John got it booked in and he also offered hydro clean as an option and It was worth every penny I couldn’t believe the difference it made plenty of power and ticking over like a dream thanks again
    Keith T.
  • Blue BMW M4 on the JTK dyno
  • White Mercedes A45 AMG on the dyno rollers
  • Red Audi A3 raised on a lift in the workshop
  • Blue Volkswagen Golf R outside the workshop
  • White Ford Focus RS outside the workshop

Goes well with a car remap