In case 500 is not enough, Roush Performance Products will be offering a set of performance kits for the Shelby GT500 that can bump the power to by as much as 200 horses. The base kit consists of a cold air intake kit and; EU tuning; that Roush says increases output by 45 hp.
A step up from that is a kit with a Roush’s new ROUSH Charger supercharger with a;78 mm pulley. While they’re at it, Roush will reprogram your ECU; to get the most out of this kit. The supercharger carries a 3 year/36,000 mile warranty and increases output by 120 hp and 88 lb-ft of torque.
Finally, Roush will offer a high-output version of its blower that can bump output by 200 hp. This kit comes with no warranty, no ECU tuning, and requires the owner to supply; the pulley.
Prices have not been announced, but if Roush’s existing prices are anything of a benchmark, the 120 hp supercharger kit will probably be in the $6,000 ballpark.
