The GTI is turbocharged and has factory performance that is a real surprise. Borla(r) often touts their racing heritage, and the Volkswagen Company has a grand racing legacy. Some may be unaware that the Audi and Bentley, who have dominated Le Mans, are Volkswagen companies. The Borla(r) Cat-Back(tm) (PN140248) system utilizes 2" tubing and straight-through performance mufflers fitting both the 2 and 4 door models. This Borla(r) system makes nice power and has a great sound that resembles some of the high-end Euro luxury cars costing better than double. Weighing in at 30% less than the factory system, this slick Borla(r) exhaust is completed with a pair of 3.15" round fully polished T-304 stainless steel tips. The VW GTI is a great bang for the buck, and a quality Borla(r) Exhaust just makes it better. Borla(r), the original pioneers of high quality, T-304 stainless steel (superior to 409 or aluminized steel) free-flow exhaust utilizes patented award and race winning technology to deliver quality, sound, performance gains and enhanced fuel economy all with an easy bolt-on installation. Just to show Borla(r) believes in their products, they back every street system with an unsurpassed written million-mile warranty.