Reprogram the JLR CCF to raise or remove the factory maximum speed limit. Original ECU data, no tuning box, fully reversible.
Jaguar Land Rover vehicles leave the factory with an electronic maximum speed limiter. This VMAX value usually sits between 112 mph and 130 mph depending on market and tyre specification. LR-Retrofit corrects this limit directly in the Car Configuration File (CCF). We do not fit tuning boxes or piggyback modules. We load original JLR data with the VMAX parameter adjusted to your required value.
What Maximum Speed Limit Correction Does
JLR stores the speed limiter as a factory safety and compliance parameter in the CCF. The CCF lives in the vehicle’s central gateway and engine control module. When the vehicle reaches VMAX, the ECU reduces fuel delivery and limits acceleration. We read the current CCF, identify the speed limit byte, and rewrite it with a corrected value. This process keeps all other vehicle functions active.
Key Benefits
- Raise or remove the factory speed limiter for track or export use.
- Software-only correction that keeps your vehicle hardware untouched.
- We can restore full factory settings at any time.
- All factory safety systems remain active: ABS, DSC, traction control, and engine protection.
- We provide a verification report after coding.
Technical Process
- You send us the VIN and current tyre speed rating.
- We prepare the corrected CCF dataset for your vehicle.
- Our technician connects with JLR diagnostic equipment via remote session or you visit our workshop.
- We read the original CCF, back up the file, and flash the corrected file.
- We clear any temporary fault codes and run a live data check.
We use JLR-approved diagnostic protocols only. Your original file stays safe on our encrypted server.
Vehicle Compatibility
We cover all modern JLR vehicles with CCF-based speed limiting:
- Range Rover L405 and L460
- Range Rover Sport L494 and L461
- Discovery 5 L462 and Discovery Sport L550
- Defender L663
- Range Rover Evoque L551 and Range Rover Velar L560
- Jaguar XE X760, XF X260, F-Pace X761, E-Pace X540, I-Pace X590
If your model does not appear, contact us for a compatibility check.
Legal and Safety Information
Speed limit correction serves motorsport, off-highway, and export markets where higher speed limits are legal. You remain responsible for compliance with local road laws. Your tyres and insurance must match the corrected maximum speed. We verify tyre speed rating before coding.
Pricing and Turnaround
We quote after you send your VIN and current tyre specification. Most remote coding sessions take less than 45 minutes. We confirm the exact price before any work starts.
Frequently Asked Questions
Will this affect my JLR warranty?
We restore the original file if needed. Standard dealer scans do not display the correction. We only correct the CCF speed parameter. This minimises impact on warranty, but you should check with your dealer.
Can you remove the speed limiter completely?
We can set VMAX to a high value or remove the limiter depending on ECU type. We confirm the best option before coding.
