DOC #CERT-C1BD-0068-368F
08.09.2026
Performance Report
ECU Chiptuning — Stage 1
Document Date
08.09.2026
BMW Z4
E89 - 2009 - 2018 20i 163HP Petrol
Original
163HP
270 Nm
Stage 1
260HP
420 Nm
+97 HP / +60% +150 Nm / +56%
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.