The 2020 Mercedes-Maybach GLS600 is the pinnacle of luxury SUVs — combining comfort, refinement, and prestige. However, factory tuning prioritises smoothness over true performance potential. With the VAITRIX Stage 1 ECU tune, we unlock significant hidden performance while maintaining factory drivability and reliability. 🔧 Performance Gains Stock Output:557 hp / 74.4 kgm VAITRIX Stage 1 Output:660 hp / 84.3 kgm 📈 Increase: +103 hp / +9.9 kgm This upgrade delivers a major im