Your Vehicle
Mercedes-Benz GLS 400d 331hp
Technical Specifications
Power and torque increase
Stage 1: software remap only, no mechanical changes, fully reversible.
Power HP
Torque Nm
Book your Stage 1 remap
499 € VAT included · pay online, the work is done at the workshop you choose
Power Graph
Mercedes-Benz GLS 400d 331hp: da 331 a 380HP
Remapping Mercedes-Benz GLS
MasterTuning is a leader in developing remapping for Mercedes-Benz. La Mercedes-Benz GLS 400d 331hp può passare da 331 HP a 380 HP con un incremento di 49 HP.
The development of each remap is customized by MasterTuning.
- 100% tested and customized files guarantee
- Tested and developed on a 4x4 dyno
- Best performance, within safety margins
- Reduced fuel consumption
ECU Remapping Details Mercedes-Benz GLS 400d 331hp
The Mercedes-Benz GLS 400d 331hp is equipped with a diesel engine that produces 331 HP and 700 Nm of torque in its factory configuration. With MasterTuning's professional ECU remapping, this Mercedes-Benz can achieve 380 HP (+15%) and 840 Nm (+20%).
Our Stage 1 tuning for the GLS 2019 - 2022 delivers an impressive gain of +49 HP and +140 Nm, optimizing the diesel engine's performance while maintaining reliability and staying within safe parameters.
The engine code OM656 D 29 R SCR identifies this specific powerplant configuration. The Bosch MD1CP001 ECU is professionally recalibrated to unlock hidden potential while preserving engine longevity.
As a diesel engine, this Mercedes-Benz responds exceptionally well to ECU tuning. Owners typically report improved throttle response, smoother power delivery, and in many cases, better fuel efficiency under normal driving conditions.
Technical Specifications — Mercedes-Benz GLS 400d 331hp
Factory technical data for the Mercedes-Benz GLS 400d 331hp (2019 - 2022), used by MasterTuning engineers to develop a tailored, dyno-tested remap for this specific powerplant.
| Engine code | OM656 D 29 R SCR |
|---|---|
| ECU / Control unit | Bosch MD1CP001 |
| Fuel | Diesel |
| Compression ratio | 15.5 |
| Bore × stroke | 82.0 X 92.0 mm |
| Stock power | 331 HP · 700 Nm |
| Remapped power (Stage 1) | 380 HP (+49) · 840 Nm (+140) |
Don't want to touch the ECU?
Rapid Dimsport add-on modules connect to the engine sensors with original connectors: they fit in a few hours and come off without a trace, leaving the factory software untouched. Useful on a leased car, one still under warranty or one you plan to sell soon. Check which ones fit your Mercedes-Benz GLS.
Frequently Asked Questions - Mercedes-Benz GLS
How much power can I gain from remapping my Mercedes-Benz GLS?
With MasterTuning Stage 1, your Mercedes-Benz GLS 400d 331hp can gain +49 HP (from 331 to 380 HP) and +140 Nm of torque. This represents a 15% increase in power.
Is ECU remapping safe for the Mercedes-Benz GLS engine?
Yes, MasterTuning's remapping for the Mercedes-Benz GLS 400d 331hp is developed within safe parameters. All calibrations are tested on our 4x4 dyno and stay within the mechanical limits of the OM656 D 29 R SCR engine.
Is the Mercedes-Benz ECU remapping reversible?
Absolutely. The original factory calibration of your Mercedes-Benz GLS is always backed up before remapping. The process is 100% reversible at any time.
Will remapping affect my Mercedes-Benz warranty?
ECU remapping may affect your manufacturer warranty. We recommend checking your specific warranty terms. Many of our customers choose to remap after the warranty period or accept this trade-off for the significant performance gains.
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Book your remap or ask for a quote
Stage 1 can be bought online and is done at the workshop you choose; for Stage 2 we send you a quote.
Stage 2 is quoted on request: write to us and we will reply with price and timing.
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