DOC #CERT-FE94-4675-4DDF
12.09.2026
Performance Report
ECU Chiptuning — Stage 1
Document Date
12.09.2026
Jeep Grand Cherokee
2011 - 2020 SRT8 6.4 Hemi V8 475hp Petrol
Original
475HP
637 Nm
Stage 1
495HP
655 Nm
+20 HP / +4% +18 Nm / +3%
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.