" 667 wheel horsepower is a hell of a lot of power especially from a relatively small 2.5 liter inline-5 motor. APR showed us 604 wheel horsepower from the Stage III package with the Garrett GTX35R turbocharger
but that was at all four wheels. These numbers are slightly misleading at least for the uninformed as 667 wheel horsepower was hit on a Dynapack hub dyno but with the power routed only for the front two wheels.
What this shows is partially the effect of different dynos and also the effect of drivetrain loss. If the car was run on the Dynpack with all four wheels connected the numbers would be lower and closer to that 604 wheel APR figure.
Regardless, this package is putting down some serious horsepower and showing over 600 wheel horsepower now on multiple occasions. It clearly is the real deal and well done.
Enjoy the dyno graph, video, and specifications below. "