Baseline numbers for the twin-turbo 3.6L LF4 V6 were 372.7 horsepower and 375 lb-ft of torque to the rear wheels. After receiving the HPE enhancements, the power output shot up to 452.9 horsepower and 432.9 lb-ft of torque. Again, to the rear wheels.
The HPE550 package includes the following components:
• HPE Engine Management Calibration
• Stainless Axle-Back Exhaust System
• High-Flow Air Filters
• Dyno Tuning & Road Testing
• Hennessey & HPE550 Exterior Badging
If you order the parts online and install them yourself, the price is $3,995 plus shipping. If you’d like Hennessey to handle everything, the cost is $5,995 plus vehicle shipping. For ATS-V owners, this isn’t too much coin for the gain.
Hit play to hear the ATS-V on the dyno, and have Jason Hanes, Senior Calibration Engineer at HPE, explain the before and after differences in greater detail.