Stage 4 Tuning
Mercedes SL450 2018 Custom ECU Tune
Mercedes SL450 2018 Custom ECU Tune
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Each of our tuning files is 100% tailored and expertly designed to meet your exact vehicle's needs and specifications. You can install these custom tunes remotely with one of our experts.
- Stage 1: No supporting modifications necessary
- Stage 2: Requires downpipes / exhaust
- Stage 3: For vehicles with upgraded turbos, E85, or a bespoke build. Contact us for a custom quote.
Data Logging & Map Switching
- Real-Time Data Monitoring: Continuously track your vehicle's performance to make precise adjustments.
- Seamless Map Switching: Effortlessly transition between custom maps tailored for various driving conditions.
- Optimized Performance: Guarantee peak performance for your vehicle, whether you're on the road or the track.
Customizations
- Extend or add burble
- Adjust the tune for your octane rating
- Calibrate the tune for every additional upgrade on the vehicle
- Multiple custom maps that you can alternate between
- Top speed limiter removal
- Check engine light removal for downpipes (Stage 2 & For off-road use only)
- Cold start delete - On/Off
*** For Vehicles that require ECU Unlock
Engine Control Unit (ECU) Unlock
Simply send us your ECU, and our experts will carefully unlock its capabilities. This comprehensive service is included in the price and typically requires 2-3 weeks to complete
The Perfect Tune, GuaranteedUnmatched 30-Day Performance Guarantee - 100% satisfaction or your money back.
Switch Back Anytime:We ensure your original ECU settings are saved, allowing you to revert any time
Have a Question?If you have any questions or concerns, don’t hesitate to reach out to us via email at info@stage4tuning.com or contact us any time using our convenient 24/7 Chat Widget below
** Note:- All tunes are for off-road use and/or motorsport applications only
- All tunes void factory warranty
- Horsepower numbers are dependent on fuel, density altitude, and vehicle modifications

ECU tuning is the process of adjusting the engine control unit's software to enhance vehicle performance, efficiency, or fuel economy.
It can, depending on the manufacturer. Many warranties do not cover modifications like ECU tuning.
Use the highest octane fuel recommended for your specific tune to ensure optimal performance and safety.
Yes, a properly tuned car can be used daily, as long as the tune is tailored for reliable, everyday driving.
CPC (Central Powertrain Controller) and TCU (Transmission Control Unit) manage your vehicle's powertrain and transmission systems, respectively.
Map switching allows you to change between different tuning settings (maps) for varying driving conditions without having to retune the ECU.
Yes, if done by a professional using proper tools, ECU tuning is generally safe for your vehicle.
ECU tuning works by modifying the software that controls engine parameters like fuel mixture, ignition timing, and boost pressure to optimize performance.
The process of installing a tune depends on the vehicle’s make and model. Some tunes are installed by connecting a tuning device to your car’s OBD-II port and uploading the tuned software, others may require ECU unlock.
Stage 1 is for vehicles with no modifications, stage 2 is for vehicles with bolt-on upgrades or downpipes installed.
We offer post-installation support, troubleshooting, and guidance on using your tuning software and hardware.
Choose tuning software that is compatible with your vehicle, has good reviews, and suits your performance goals (e.g., reliability vs. max power).