Valved Sport Exhaust System 997.1 - Brombacher Edition - 200 Cell HF Sport Cats - Center Exit Tips

Description

This exhaust system is ideal for owners who want to run a GT3 rear bumper, this system offers uncompromising sound and performance for the street or track. It is relatively civilized when cruising and a real motorsport dream under full load. FVD Brombacher Germany sources our exhaust systems with the widest range of sound levels and performance on the market. Sound levels range from mild, more conservative street systems, exotic sounding sport systems and wide open, pulse pounding, race systems. Each system has been developed to work together without compromise. Our entire Brombacher Edition line of exhausts is manufactured by M&M Exhaust, GmbH in Germany. They manufacture a multitude of Porsche Motorsport, Porsche Race Exhausts and Porsche Street Exhausts. Each system is manufactured in the highest-grade German V2A - X5CrNi18-10 - 1.4301 (T-304 L) light weight stainless steel and is tested comprehensively for exhaust gas scavenging, velocity, thermal stress, cracking and longevity. M&M exhausts have competed in and won many 24-hour races over the years including Nürburgring, Le Mans, Dubai, Daytona to name a few. When you purchase this exhaust system, you are the benefactor of all that Porsche racing exhaust design experience. If you are looking for an exhaust product that can handle abuse at the track, or on the street look no further.

Features:
+21 HP & + 19 TQ Gain
Long tube, equal length primary tubing
Internal motorsport merge collector – for increased velocity and laminar flow
German V2A - X5CrNi18-10 - 1.4301 (T-304 L) stainless steel for improved durability
200 Cell HJS double foil high flow “HF” sport catalytic converters | Software tuning recommended
Hand-ported TIG welded inlets for optimized flow
Reduces back pressure and thermal stress on the engine
Increased mid-range torque and top end horsepower
Greater decibels at lower rpms with much greater decibel's higher rpms
Sporty sound with an exotic flat-6 exhaust note
Made in Germany

The headers start with a laser cut, stainless steel, dual plated primary flange which is more labor intensive to manufacture. M&M's race experience with thick, single plated flanges warping with age, heat and vibration lead to costly performance losses which prompted them to engineer a more reliable design. Their double plated flange allows for greater thermal expansion which dissipates heat more efficiently, which equates to greater reliability on the track or street. The hand ported primary inlets are also more labor-intensive, but hand porting means more laminar flow which equates to greater exhaust gas velocity and more performance. The inlets lead us to the long tube, equal length primary tubing whose diameter is selected and designed specifically for your engine's displacement. Each primary tube is mandrel bent, segmented and purge TIG welded by hand. For those thinking, why aren't the primaries a seamless length of tubing like some others in the industry? Segmenting strengthens the primaries and prevents stress cracks commonly found with the competition's headers. M&M back purge TIG welds each joint which reduces carbide precipitation and means seamless internal welds for more laminar flow and greater performance. This primary design method has been proven over years of time under the toughest endurance racing conditions. The primary tubing leads us to the custom made, purge TIG welded, internally blended merge collector that smoothly transitions into larger diameter hand ported outlet for greater scavenging effect. The merge collector incorporates a small spike (not a long pyramid spike which can warp with heat and age) at the center which helps to scavenge the flow from each adjacent pipe as the engine fires in sequence. But another key to the merge collector is the larger outlet diameter which increases exhaust gas velocity and broadens the engine's torque curve all the way to the horsepower peak.

The 200 cell catalytic converters are made by HJS Emission Technology GmbH & Co.KG in Germany. They are nicknamed “HF” or high flow for their durable design. They have double foil design (winding of two flat and corrugated foils), which equates to durability for street use. We recommend the HF cats for owners who plan to use their cars on the street only. After the cat, the pipe paths are kept separate and have a U-Torque Design, M&M found that configuration will retain more low-end torque than a cross over pipe design. The post cat O2 sensors are added just before the bend which allows for simple connection with the existing wiring.

The muffler design varies greatly from designs that are common in the aftermarket. Our muffler is uniquely made with double perforated sound absorption tubes based on the Halbgegenstromprinzip (half counter current principle). The acoustic silencer absorption tubes are made in a trapezoidal pattern and are perforated with varying diameters. This design isolates and dampens the unwanted frequencies that create drone. Perforated tubes also create much less flow restriction than baffle plates at higher gas velocities, and consequently translates into larger horsepower and torque gains throughout the entire rev range. We also insist upon a more expensive factory stamped design which also assists with reducing drone and resonance in the cabin. This is our Jekyll and Hyde muffler offering specially developed for the 997.1. This muffler complements Porsche's racing heritage by offering a loud, exotic motorsport exhaust note with the valves open. It is the perfect compromise for you and your loved ones. Rich, deep race car tones with the valves open and soft subtle, stock like sounds with them closed. Top of the line or range depending on the English and is the best choice for a daily driver.

The exhaust tips are 4.0 inches (100 mm) dual round outlets that perfectly complement a GT3 rear bumper. Each tip is double walled stainless which dissipates heat more efficiently so that the tips don't discolor with heat as quickly as single walled tips. Each tip includes an embossed FVD Brombacher logo.

The resulting sound exhibited is a sonorous, linear-firing-order dominated flat 6 Porsche sound, which also gurgles and crackles off throttle off high rpm loads. It is the closest to a Cup Car sound in nature and is unmistakably Porsche. This sound is not a coincidence as our entire Brombacher Edition line of exhausts is manufactured by M&M Exhaust, GmbH whose exhaust can be heard on many of the RSR and Cup R Porsche race cars we have loved to listen to over the years.

Regarding performance, we were able to achieve gains of + 40 HP and 30 TQ on a 997.1 Carrera S model, with this exhaust, FVD software and a BMC sport filter:

FVD Level 3 Power Gains on a Carrera S:
Max. Power – 290 kW / 395 PS (395 HP) @ 6500 rpm
Max. Torque – 441 Nm (325 lb-ft) @ 4000 rpm
Max. Speed – 307 km/h (190 mph)
Max. RPM – 7500 rpm
Acceleration - 0-100 km/h (0-62.5 mph) - 4.4 s

In closing, the German made, FVD Brombacher brand offers you far more exclusivity than those common in the aftermarket. Stand out at your next track or coffee meet and watch the looks of envy when your friends hear this exhaust, feel the performance gains and see the quality. After all, you own a German car for a reason and tuning with German made FVD Brombacher parts enhances the joy of ownership without regret.

Please note: Our valved retro fit kit, part # BESKLS000001 is required for cars that have the standard exhaust. If you have the optional PSE, then this system is a direct replacement. This sport system is not C.A.R.B. certified (California) nor is it TÜV approved. We recommend FVD software tuning, as stock tuning can from time to time throw a check engine light (CEL) and will cause the car far to rich which can damage the sport cats. This is the perfect time to take advantage of our FVD Progressive Tuning Program, explained in our performance software option, like part # FVD99761810MG or FVD99761820MG for example. And please don't forget, if you already have FVD performance software, this exhaust purchase includes a free software update!