SOURCE: Hennessey Performance
HPE-550 Cadillac ATS-V Dyno Testing
“Chassis dyno testing the Hennessey HPE550 upgrade for the Cadillac ATS-V produces gains of over 100 rear wheel HP and 100 rear wheel torque. The results yield huge performance gains in acceleration while giving the ATS-V an exotic exhaust note. Every Cadillac ATS-V should have this upgrade.”
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