High Powered Porsches On A Dyno (Video) 4 discussions Several high powered Porsches on a dyno, including a 928 with nitrous, an endurance spec 996 with 1100lb of torque, and a GT2 with over 800 horsepower at the flywheel! Tags: porsche dyno gt2 911 996 928 turbo nitro cars ferrari power fast horsepower torque speed