Borla Universal XR-1 Multi-Core Racing Muffler for Round 3-1 2 IN 3-1 2 Out 16 x 6-1 4 - 40722 fits_2002-2008`Audi`A4 8L NA Open Diff

8L NA Open Diff

Flows 28% better (Closed Valve) and 17% (Open Valve) Better Than Stock

Secure refrigerator box in place

Vehicles equipped with Magnetic Ride Control may need an MRC cancellation Module to prevent warning light / limp mode

Borla Universal XR-1 Multi-Core Racing Muffler for Round 3-1 2 IN 3-1 2 Out 16 x 6-1 4 - 40722 fits_2002-2008`Audi`A4 8L NA Open DiffXR 1(r) Multi Core Racing Muffler. 3. 5" Center Inlet 3. 5" Center Outlet 6. 25" Round x 16" Long Body 21" Overall Length. Long body design works well on SUV & truck applications but can be used on a wide range of vehicles including rotary engine equipped vehicles. It features BORLA(r)'S patented Multi Core 6 tube design for maximum flow, horsepower, and torque. The Multi Core portion of XR 1(r) mufflers flows better than straight tubing. Recommend