FVD Brombacher Stainless Exhaust System Porsche 991 Carrera 3.8L 12-13

This is the very 1st aftermarket exhaust for the Porsche 991 and is also one of the most technically advanced systems for any Porsche to date. The entire Brombacher line of exhausts is manufactured to strict specifications by M&M Exhaust, GmbH in Germany as is this system for the 991. This system incorporates advancements learned over many, many years of endurance racing at races like the 12 hours of Sebring, 24 hours of Nurburgring and the 24 hours of Dubai.

Headers

The Headers on this latest 991 system include a double plated flange. This flange dissipates heat and vibration more efficiently and consequently does not warp like thicker single plate flanges commonly used by others. This small advancement is time consuming to make but is added in order to prevent loss of power over time and will ensure years of trouble free operation even under severe track conditions.

The header piping incorporates a 2 3/4" motorsports style merge collector. The collector smooths out exhaust flow and turbulence created from the 3 primary pipes merging into one. Collectors create more velocity, which reduces back pressure and creates torque. This systems collector gently guides exhaust gases from the walls of the piping towards the center and lowest point of the 2 3/4" tubing. This dramatically reduces power robbing turbulence and increases the volume of gas and gas velocity which translates into superior low end and mid-range torque.

Catalytic Converters

The Catalytic Converter cores used in this system are the most advanced in the industry. They are produced by HJS in Germany and are a 200 CPSI (cell per square inch) tri-metal design. Tri-Metal cats are the freest flowing and environmentally friendly aftermarket cats produced today. Tri-metal catalytic converters perform all three necessary and mandated reactions to prevent pollution. Reduction of nitrogen oxides to nitrogen and oxygen, oxidation of carbon monoxide to carbon dioxide and oxidation of unburnt hydrocarbons to carbon dioxide and water simultaneously.

Mufflers

The Muffler section of the exhaust system incorporates an X pipe design to dampen and eliminate unwanted frequencies otherwise known as "drone" and gives the system the added benefit of increased torque in the mid-range. The actual muffler is vastly different than the common baffle plated muffles stuffed with packing material that are common in the aftermarket.

The acoustic silencer absorption tubes are made in a trapezoidal pattern and are perforated with varying diameters, which isolate and dampen unwanted frequencies. Perforated tubes at higher gas velocities, present much less flow restriction than baffle plates and consequently translates into larger horsepower gains at higher RPMs. They also produce the aggressive gurgling sound and contribute to the low, deep tones that you hear with the exhaust valves open.

Exhaust Tips

The Exhaust Tips are a dual 3.5" round design and are double walled. The tips also use a stainless steel mesh insert which adds a slightly deeper, lower tone.

Additional Features:

• + 25 Hp / + 20 Tq Gain
• 200 cell HJS "HD" Sport Catalysts
• 25 lb. weight savings over OEM system (59 lbs vs. 84 lbs)
• 2 3/4" Tubing (70mm)
• 4 x 3.5"(90mm) Round Tips
• Motorsport merge collector
• T316 stainless steel for improved durability over T304
• Absolutely NO DRONE in the cabin
• Aero Quip style motorsport connections ensure a leak free exhaust
• Does NOT interfere with emissions, will NOT trigger CEL
• ECU programming (software) is NOT necessary
• Under load (moving) with valves closed: 85dB*
• Under load (moving) with valves open: 90dB*