DOC #CERT-645F-6CA7-D965
07.09.2026
Performance Report
ECU Chiptuning — Stage 1
Document Date
07.09.2026
BMW 4 serie
f3233-2013-2016 m4 431HP Petrol
Original
431HP
600 Nm
Stage 1
500HP
650 Nm
+69 HP / +16% +50 Nm / +8%
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.