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BBi Autosport Porsche 991 GT3 StreetCup Exhaust Bypass

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4 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

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YOUR RESEARCHBBi Autosport Porsche 991 GT3 StreetCup Exhaust Bypass

Leading reported evidence

Run deep here at bbi autosport

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Suggestion · Original poster

Racing traditions run deep here at BBi Autosport.

BBi Autosport Porsche 991 GT3 StreetCup Exhaust Bypass
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Leading evidence: 'Run deep here at bbi autosport' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Run deep here at bbi autosport' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

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Use 304 aerospace grade stainless tubing

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
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Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

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.

BBi Autosport Porsche 991 GT3 StreetCup Exhaust Bypass
Frequently discussed actions (2)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Run deep here at bbi autosport

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster

Racing traditions run deep here at BBi Autosport.

BBi Autosport Porsche 991 GT3 StreetCup Exhaust Bypass

Use 304 aerospace grade stainless tubing

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

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.

BBi Autosport Porsche 991 GT3 StreetCup Exhaust Bypass
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Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.

4 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

  • Pelican Parts: 1 discussions

0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.

0 acknowledgements have no verified action link; they do not establish a repair result.

Generation: 20261026T144035Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

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

POST 2 / ORIGINAL POSTEROriginal post

991 GT3 with Stock Exhaust OEM 991 GT3 Exhaust vs BBi 991 GT3 Exhaust. 44lb vs 4lb BBi 991 GT3 Exhaust Installed

POST 3 / ORIGINAL POSTEROriginal post

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

POST 4 / ORIGINAL POSTEROriginal post

Project "Chocolate Thunder" Porsche 991 GT3 with our BBi StreetCup Exhaust Bypass.

This is a source reference. Confirm exact model applicability in the original material.