T-304 Stainless Steel Cat-Back™ System Borla Performance Industries has released two great new systems for the fun new 2003-05 Toyota Scion XB equipped with a 1.5L 4-cylinder engine and automatic or manual transmission. Part #140092 is a Cat-Back™ system that requires the cutting of the original exhaust just after catalytic converter and the cutting of the rear valence to accommodate the additional exit. Our system then installs using a slip fit connection. 140092 is then an easy bolt-on and incorporates a 10” long, 5” diameter round “S” style muffler that has gained fame with popular American performance cars enthusiasts and is known for incredible flow improvements and a powerful, aggressive sound. R&D testing has shown flow increases of up to 103cfm over the factory exhaust (for a total flow of 372.3cfm @ 70psi) and an increase of up to 4 additional horsepower. Borla part #11741 is a rear section that installs using the factory clamp-on connection just before the rear muffler assembly. Borla has a 26-year tradition of building performance exhaust for Toyota products, from the trucks to the NHRA Champion Titan Motorsports Supra to the Scion. Borla, the original pioneers of aerospace-grade T-304 stainless steel (superior to T-409 or aluminized steel) free flow exhaust utilizes its patented award and race winning technology to deliver quality, sound, performance gains and enhanced fuel economy – all with an easy bolt-on installation. All BORLA street products carry the famous BORLA written million-mile warranty.