DOC #CERT-BE9C-B91F-6105
13.09.2026
Performance Report
ECU Chiptuning — Stage 1
Document Date
13.09.2026
BMW 4 serie
f3233-may2016-2019 420i 184HP 8550 Petrol
Original
184HP
270 Nm
Stage 1
250HP
440 Nm
+66 HP / +36% +170 Nm / +63%
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.