The KESS3 is a versatile and powerful tool designed for reading and writing ECUs across a wide range of vehicles, including automobiles, motorcycles, trucks, agricultural machinery, and marine applications. Its user-friendly operation requires only a simple connection to the vehicle’s diagnostic port using the included interface cable.
The KESS3 is a versatile and powerful tool designed for reading and writing ECUs across a wide range of vehicles, including automobiles, motorcycles, trucks, agricultural machinery, and marine applications. Its user-friendly operation requires only a simple connection to the vehicle’s diagnostic port using the included interface cable.
Top 20 Remapping Questions
It's a calibrated software update to your engine control unit that optimises fueling, boost, ignition and torque limits for better performance and/or economy.
Yes when done correctly and maintained properly. We work within safe limits for your specific engine, fuel and hardware condition.
Our Stage 1 calibrations keep reliability in mind. Aggressive driving or poor maintenance can affect longevity regardless of mapping.
Yes—we can return the ECU to factory software if required.
You should inform your insurer of any performance modification.
A remap alone doesn't fail an MOT. However, DPF/EGR/AdBlue deletes are for off-road/track use only and are not road-legal.
Gains vary by engine. See the performance stats on this page for your vehicle.
We use proven calibrations and can arrange dyno testing on request.
Typically 60–120 minutes for most vehicles, depending on ECU type and read/write method.
Both benefit. Some autos also benefit from a gearbox (TCU) tune for shift speed and torque limits.
Many turbo-diesels and some petrols see real-world MPG gains with sensible driving.
Follow manufacturer recommendations; premium fuels can help performance petrol maps.
Stage 1 typically requires none. Stage 2+ may require intake, intercooler, exhaust, clutch, etc.
Where supported, yes (off-road/track use where appropriate).
Available on some petrol engines for off-road/track use.
Minor mods are usually fine; major hardware changes may require a revised map.
We warrant our workmanship. Manufacturer warranties are at the manufacturer's discretion.
We offer post-install checks and advice. Keep the vehicle well maintained and use quality fuel.
Card, bank transfer and other options at checkout/booking (subject to change).
We want you to love the result. Our policy distinguishes between services/software and any physical goods supplied.
Software & Services (Remapping/Diagnostics)
Before work: You may cancel or reschedule your appointment with reasonable notice (see Policies).
After work performed: ECU calibration is a bespoke digital service tailored to your vehicle. Once installed and test-driven, it’s non-refundable. If you experience issues, we’ll investigate and remedy where the cause relates to our calibration.
Rework window: If you’re not satisfied with drivability within 14 days, contact us. We can adjust the calibration or revert to stock at our discretion.
Pre-existing faults: Tuning cannot compensate for underlying mechanical/electrical issues (e.g., weak turbo, clogged DPF, faulty sensors). Repairs are outside scope.
Hardware (if supplied)
Unused/Unopened: Return within 30 days in original packaging for a refund (less shipping and any non-recoverable fees).
Used/Installed: Not eligible for return unless faulty under manufacturer warranty.
Faulty goods: We’ll assist with diagnostics and warranty claims according to the manufacturer’s terms.
Road-Legal Note
Services such as DPF/EGR/AdBlue disable and certain pop-and-bang features are offered for off-road/track use only. It’s the customer’s responsibility to comply with UK road laws and insurance requirements.
This approach aligns with typical UK tuning industry practices while focusing on fair aftercare and transparent expectations.
Policies (Summary)
Terms & Conditions: Bookings, pricing, cancellations, liability and warranties are covered in our T&Cs. Remapping is for healthy vehicles only; we reserve the right to refuse work if faults are present.
Privacy: We collect only necessary data (contact details, vehicle info, booking details) to deliver our services. Data is handled securely and not sold to third parties.
Road-Legality: Any emissions-related modifications are for off-road/track use where permitted. You are responsible for notifying your insurer of modifications.
