DOC #CERT-D611-3D74-57BC
08.09.2026
Performance Report
ECU Chiptuning — Stage 1
Document Date
08.09.2026
Steyr 4000 serie
All 4120 121hp Diesel
Original
121HP
563 Nm
Stage 1
140HP
620 Nm
+19 HP / +16% +57 Nm / +10%
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.