Mercedes-Benz GLS (X167) Performance Tuning — ECU TUNING, TCU TUNING, CPC TUNING | AMR Performance

Mercedes-Benz GLS (X167) performance tuning Get more from your Mercedes-Benz GLS (X167) with AMR Performance ecu tuning upgrades, tcu tuning upgrades, and cpc tuning upgrades. Our calibrations unlock the power your GLS (X167) left at the factory — improved boost response and torque delivery — while retaining all factory safety and knock protection and remaining fully reversible to stock. Every AMR calibration for the GLS (X167) is emissions-conscious, developed to keep your car healthy, and backed by direct support. Fitment covers Mercedes-Benz GLS (X167) model years 2020–2026. What's included Custom calibration developed specifically for the Mercedes-Benz GLS (X167) Optional TCU transmission tuning for firmer, faster shifts 91 and 93 octane map options to match your fuel Improved throttle response and reduced turbo lag Retains factory knock protection and safety limits 100% reversible to stock 1-on-1 setup and support from the AMR team