Nikos Argalias
Jun 2025
Had a stage 2 ecu tuning and air filter install, and the guys were really great to work with. Car feels noticeably faster. I would highly recommend these guys.
Posted on Google · view on our Google profileMercedes-AMG AMG GT 4-Door 53 X290 ECU Remapping
Mercedes-AMG AMG GT 4-Door 53 X2903.0 I6 M256 · 2018–2024
Stage 1 £599
Get my quote →The Mercedes-AMG AMG GT 4-Door 53 X290 (2018 to 2024) leaves the factory with 435 PS and 520 Nm from its 3.0 petrol engine. Our Stage 1 estimate takes it to 500 PS and 650 Nm, roughly 15% more power and 25% more torque.
Mercedes-AMG
ECU confirmed on inspection
AMG GT 4-Door 53
X290 · 3.0
Stage 1 estimate
500 PS
STX Tuning
Stage 1 price
£599
Stage 1 ECU remap
Estimated gain
+65 PS · +130 Nm
Power
Stock
435 PS
Stage 1
500 PS
Torque
Stock
520 Nm
Stage 1
650 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.
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What 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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