Just a few weeks after revealing its HPE800 package for the Dodge Charger SRT Hellcat, Texas tuning company Hennessey Performance has released a video of it conducting dyno testing on its even more insane HPE850 package for the Charger Hellcat.

As the name of the package suggests, it sees power from the 6.2-litre V8 engine rise from 707 hp to 852 hp at the flywheel. That translates to a potent 741.56 hp at the rear wheels as well as 652.37 lb-ft of torque.

These performance gains have been achieved thanks to a new ECU, high-flow air filter, upgraded lower pulley, port matched throttle body and a ported supercharger housing.

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