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YOUR RESEARCHBBi Autosport Porsche 991 GT3 StreetCup Exhaust Bypass
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Run deep here at bbi autosport
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Suggestion · Original poster
For durability and protection against corrosion, each system is meticulously TIG welded using 304 aerospace grade stainless tubing with lower carbon content.
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Suggestion · Original poster
For durability and protection against corrosion, each system is meticulously TIG welded using 304 aerospace grade stainless tubing with lower carbon content.
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Pelican Parts: 1 discussions
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Generation: 20261026T144035Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
BBi Autosport Porsche 991 GT3 StreetCup Exhaust Bypass
Now Available Through Pelican Parts!!!
Shedding weight is one of simplest ways to add performance to your Porsche. Unfortunately, reducing weight on the already slim GT3 is rarely an inexpensive task and the factory exhaust system is already very well designed for optimum power delivery. The only drawbacks to the factory system is a muted exhaust note that was designed to comply with the local laws and appeal to a wide customer base, and the excess weight.
We addressed those flaws when we designed our exhaust system for the 997 GT3. Most other aftermarket exhaust systems on the market replaces the secondary center muffler and the performance gains and weight savings are minimal. The factory secondary exhaust weights approximately 20 pounds and the average secondary muffler bypass weighs approximately 7 pounds, which equates to only 13 pounds of weight savings.
We took a more unorthodox approach and bypassed the much heavier primary side mufflers. The primary mufflers are weigh approximately 44 pounds total while our bypass pipes are 4 pounds in comparison. For durability and protection against corrosion, each system is meticulously TIG welded using 304 aerospace grade stainless tubing with lower carbon content. The result is a substantial reduction in weight behind the rear axle which significantly improves handling and less restriction to produce a much more aggressive exhaust note.
Key Features
Delivers deep aggressive exhaust sound
Significant weight reduction of 40 pounds
304 stainless steel aerospace tubing
Meticulously TIG welded
Brushed stainless finish
Stainless hardware and clamps
100% emissions legal
Will not void warranty
Factory secondary mufflers and catalytic converters are all retained
50 state emission compliant
Direct bolt on replacement
Made in USA
About BBi Autosport
BBi Autosport was founded in the summer of 2005 with the mission of bringing artistry and craft to the Porsche tuning industry. With over 30 years of combined motorsport history, BBi’s operation is truly unique. Racing traditions run deep here at BBi Autosport. As the company's founder and technical director, Betim Berisha has worked in Racing for many years at prestigious events like the 24 Hours of Lemans and 24 Hours of Daytona. First for Fordhal Motorsport working on their GT3RS and Saleen S7 in ALMS and Grand Am series, Alex Job Racing on their ALMS GT3RSR, J3 Racing working on their GT3RSR and then Porsche Motorsports North America as their dyno tech an supporting Porsche teams at ALMS, Grand Am, Speed World Challenge events. Sharing the same passions, most of BBi's support and shop staff have also previously worked for other motorsport programs. Being a one-stop shop, BBi Autosport is equipped to offer everything from hand-built hard goods to championship-winning GT3 Cup Cars.
For up to date information of current shop activities, projects, and product releases, please follow us on our Facebook and Instagram accounts:
https://www.instagram.com/bbiautosport
https://www.facebook.com/BBIAutosport
Here are videos and reviews from our customers.
Video and review by Rennlist member VF430 who had it installed at our facility:
BBI Porsche 991 GT3 Exhaust Bypass - YouTube
991 Gt3 BBI Exhaust Sound Clip - Rennlist Discussion Forums
In car video during Autocross by Rennlist member BigKraig:
Review from another Rennlist member SamFromTX
Exhaust upgrade-bbi - Rennlist Discussion Forums