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Borla Performance Industries
Borla Performance Industries [(877) 462-6752; www.borla.com] has a new cat-back system that bolts behind the factory H-pipe, is lighter than the factory system, and includes the company’s “S”-Style mufflers (PN 140135). Two rear section options are also available: an aggressive “S”-Style rear exhaust section (PN 11750) and a more mellow rear section (PN 11752). Both replace only the over-the-axle pipes, mufflers, and tips. This system is available for the GT and the Shelby GT500. Borla also has tuned “true” dual cat-back exhaust systems (PN140176) for the 4.0L V-6. Testing has shown average power increases of 18 hp and 14 lb-ft of torque with almost an identical weight to the factory single exhaust.