With the new exhaust on and the cutouts closed, the Nova cranked out 354.9 (corrected) rear wheel horsepower through the mufflers and full exhaust. After a short cool down between dyno pulls, we cracked open the cutouts, slammed down the loud pedal, and were rewarded with a 365.9 reading. That's an increase of 11 horsepower just by pressing the toggle switch to open the cutouts. A dyno glitch caused a problem with the torque readings, however. All testing was performed by Chris Winter at Crazy Horse Racing on a Dynojet chassis dyno.