ECU Remapping
Unlock your vehicle’s true potential with our professional ECU remapping services, delivering improved performance, better fuel economy, and enhanced driving experience.
Professional ECU Remapping
At SJConcepts, we specialize in ECU (Engine Control Unit) remapping to optimize your vehicle’s performance. Our expert technicians use state-of-the-art equipment and software to modify your vehicle’s engine management system, unlocking its true potential while maintaining reliability.
ECU remapping involves adjusting various parameters in your vehicle’s engine management system, including fuel pressure, boost pressure (for turbocharged engines), ignition timing, and throttle response. These adjustments are carefully calibrated to enhance performance, improve fuel efficiency, and provide a more enjoyable driving experience.
We develop custom maps for each vehicle based on its specific make, model, and engine type, ensuring optimal results without compromising reliability or longevity. Our remapping services are backed by extensive testing and quality assurance to deliver consistent, reliable performance improvements.
Benefits of ECU Remapping
Increased Power
Gain significant improvements in horsepower and torque, enhancing acceleration and overall performance for a more dynamic driving experience.
Better Fuel Economy
Optimize fuel delivery and combustion efficiency to reduce fuel consumption, especially during highway cruising and steady-state driving.
Enhanced Drivability
Experience smoother power delivery, reduced turbo lag, and improved throttle response for a more engaging and enjoyable driving experience.
Customized Solutions
Receive a bespoke remap tailored specifically to your vehicle and driving preferences, whether you prioritize performance, economy, or a balance of both.
Non-Invasive Process
Our remapping is performed through the vehicle's diagnostic port without any physical modifications to the engine, preserving warranty coverage where applicable.
Reversible Changes
All modifications can be reversed to factory settings if needed, providing flexibility and peace of mind for leased vehicles or future resale.
Our Technical Approach
All of our software is dyno developed and logged to ensure engine parameters are accurately monitored for the following critical factors:

Air Fuel Ratios (AFR's)
It is important to ensure optimum AFR is achieved in order to ensure stoichiometric mixture. This in basic terms means that the engine isn’t running lean or rich fuel mixture. This is also important in ensuring that your engine is MOT compliant and maintains long-term reliability.

Boost Pressure
It is important that correct boost pressure control is achieved to ensure that no spikes or dips occur to ensure maintained life of the turbo charger. A spike in the boost delivery can cause over-boosting which pressurises the compressor to a level beyond its tolerance.
Exhaust Gas Temperatures
When increasing the fuelling and boost pressures of an engine it naturally increases the EGT. It is important to log the EGT of an engine as there is a crucial limit which shouldn’t be surpassed to ensure maintained longevity. This is a good tool in monitoring the efficiency of uprated intercoolers.

Injector Duty Cycles (IDC)
This is crucial to know the fuelling limitation of the injector. If it was a turbo application, and the boost pressure was raised, due to there being no additional fuel available, it would cause the engine to run lean and potentially damage your engine. We ensure all parameters are within safe limits.
As a result of fine monitoring and adjustment to our remapping software, we are able to provide safe and reliable tuning solutions. We will not operate outside of the engine’s capabilities on standard components as your vehicle’s reliability is as important to us as it is to you.
Check Your Vehicle's Tuning Potential
Visit Celtic Tuning’s official website to discover the performance gains available for your specific vehicle.
Performance Examples
Audi A3 2.0 TDI
Stock Power: 150 HP
Remapped Power: 190 HP (+27%)
Stock Torque: 320 Nm
Remapped Torque: 410 Nm (+28%)
Fuel Economy: Up to 10% improvement
BMW 320d
- Stock Power: 190 HP
- Remapped Power: 230 HP (+21%)
- Stock Torque: 400 Nm
- Remapped Torque: 480 Nm (+20%)
- Fuel Economy: Up to 8% improvement
VW Golf GTI
Stock Power: 220 HP
Remapped Power: 280 HP (+27%)
Stock Torque: 350 Nm
Remapped Torque: 435 Nm (+24%)
Fuel Economy: Up to 7% improvement
More Performance Data
Make | Model | Engine | Power Gain | Torque Gain |
---|---|---|---|---|
Mercedes | C220d | 1950cc Diesel | +21% | +20% |
Ford | Focus ST | 2261cc Petrol | +18% | +17% |
Range Rover | Sport 3.0 SDV6 | 2993cc Diesel | +18% | +14% |
Skoda | Octavia vRS | 1984cc Petrol | +25% | +22% |
Volvo | XC60 D5 | 1969cc Diesel | +19% | +21% |
Ready to Enhance Your Vehicle's Performance?
Contact us today to discuss how our professional ECU remapping services can transform your driving experience. Our expert technicians will provide personalized advice based on your specific vehicle and requirements.
Schedule your appointment today
Call us:
07471 315153
Have questions about our services or want to schedule an appointment?