Peter Paprocki
Mar 2025
Great remap car feel great They fit me in on my lunch break 😁 and manged to do it asap
Posted on Google · view on our Google profileMercedes-Benz GLC400d X253 FL ECU Remapping
Mercedes-Benz GLC400d X253 FL3.0 I6 OM656 · 2019–2022
Stage 1 £399
Get my quote →The Mercedes-Benz GLC400d X253 FL (2019 to 2022) leaves the factory with 330 PS and 700 Nm from its 3.0 diesel engine. Our Stage 1 estimate takes it to 395 PS and 800 Nm, roughly 20% more power and 14% more torque.
Mercedes-Benz
ECU confirmed on inspection
GLC400d
X253 FL · 3.0
Stage 1 estimate
395 PS
STX Tuning
Stage 1 price
£399
Stage 1 ECU remap
Estimated gain
+65 PS · +100 Nm
Power
Stock
330 PS
Stage 1
395 PS
Torque
Stock
700 Nm
Stage 1
800 Nm
Figures are STX Tuning estimates for a healthy standard car, not a dyno result for your vehicle. Power is shown in PS. These are existing vehicle library estimates, not independently measured results.
WhatsApp STX TuningWhat we do
More than just ECU remapping.
From Stage 1 and Stage 2 ECU remapping to gearbox tuning and supporting performance upgrades, STX Tuning offers specialist vehicle software and tuning services for compatible petrol and diesel cars and vans.
Explore the available options for your exact vehicle at our Slough workshop, with suitable mobile ECU remapping appointments available across selected surrounding areas.
- Stage 1 & Stage 2 ECU RemappingStage 1Stage 2
- Turbo Petrol ECU Tuning
- Turbo Diesel ECU Tuning
- Pops & Bangs
- Performance Remapping
- Economy ECU Remapping
Not sure which tuning service you need?
Tell us what you drive and what you'd like to achieve. We'll check your vehicle and help you explore the available options.
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