DOC #CERT-B915-ECD8-D991
07.09.2026
Performance Report
ECU Chiptuning — Stage 1
Document Date
07.09.2026
Lexus IS
2005 - 2013 F 5.0 V8 423hp Petrol
Original
423HP
505 Nm
Stage 1
448HP
525 Nm
+25 HP / +6% +20 Nm / +4%
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.