Fabspeed Porsche 964 Carrera Maxflo muffler cat-back Exhaust System (1989-1994) Select:Select Outlet Type=Single Outlet OEM air boxes are designed

OEM air boxes are designed to act as mufflers to keep the induction note from reaching the cabin

When it comes to precisely engineered automobiles like the Porsche 986 Boxster

Includes integrated O2 sensor bung for air/fuel ratio management

Adds 4 whp / 4 ft/lbs of tq with improved throttle response

Dramatically reduces backpressure and improves exhaust flow and sportscar sound

Fabspeed Porsche 964 Carrera Maxflo muffler cat-back Exhaust System (1989-1994) Select:Select Outlet Type=Single Outlet OEM air boxes are designedFabspeed Motorsport Maxflo Muffler Exhaust System replaces your restrictive factory Porsche center muffler and factory secondary side mufflers with 1 MAXFLO muffler mounted directly behind the license plate frame on all 964 cars worldwide. DYNO developed race track and Autobahn proven performance an durability. SOUND: Improved sports car sound; deep and throaty rumble while maintaining street appropriate volume along with significant weight savings