This Porsche 997 Turbo Cabriolet/TipTronic is fitted with Fabspeed's "Quiet" Version 2 Maxflo Muffler with 200 cell, German imported sport cats. Fabspeed offers two sound preferences for your 911-997 Turbo: Version 3 "Sport" for manual/coupe; and Version 2 "Quiet" for TipTronic/Cabriolet. Constructed from T304 stainless steel, CNC mandrel bent tubing for optimum power. Maxflo mufflers are a direct bolt-on upgrade which can be utilized with the stock headers and tips or Fabspeed's sport headers and dual-style 3.5" deluxe tips. Power improves by +26HP/+31 ft-lbs of torque with the Maxflo exhaust system installed. Visit www.FABSPEED.com for more information regarding Fabspeed performance products for your 911-997 Turbo.