Comparison of Roush vs GT500 rear axle rear axle rear axle vs. Hushpower drain on a 2011 Mustang conditions. This car has an off-Xpipe (not cats), has multi-axis storage tubes and resonators. This is an update of the previous video that compared the Hushpowers Roush.
Tags: 2011 Mustang GT, Roush Exhaust, hushpower exhaust, GT500 exhaust, 2011 Mustang exhaust, 2011 Mustang, 2011 California Special, 2011 Mustang GTCS
