DOC #CERT-E655-4E9F-00A9
11.09.2026
Performance Report
ECU Chiptuning — Stage 1
Document Date
11.09.2026
BMW XM
2022 -> ... 4.4 Bi-Turbo V8 653hp Petrol
Original
653HP
800 Nm
Stage 1
750HP
1100 Nm
+97 HP / +15% +300 Nm / +38%
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.