DOC #CERT-2E3C-D711-712E
12.09.2026
Performance Report
ECU Chiptuning — Stage 1
Document Date
12.09.2026
Mercedes-Benz GL
X166 - 2012 -> GL 63 AMG - 558hp Petrol
Original
558HP
760 Nm
Stage 1
620HP
900 Nm
+62 HP / +11% +140 Nm / +18%
Estimated Power and Torque Curve
Customer
Chassis
Date
Signature
Stamp
NOTICE: This document represents estimated values based on database information. It is not valid as official certification without the original handwritten signature and physical stamp of the authorized technician. Performance values may vary based on vehicle condition, fuel quality and operating environment.