DOC #CERT-5A01-C259-48A7
08.09.2026
Performance Report
ECU Chiptuning — Stage 1
Document Date
08.09.2026
BMW Z4
G29 - 2019 -> 20i 197hp Petrol
Original
197HP
320 Nm
Stage 1
250HP
440 Nm
+53 HP / +27% +120 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.