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Catalyst / Bypass

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DISPLAYING 1 to 16 (of 16 products)
Akrapovic Link Pipe Set With Cat Bypass Titanium for Porsche 991 (911) Turbo/Turbo S 2014>>
Code: L-PO991T/2
akrapovic

The next step from Akrapovič for the Porsche 911 Turbo / Turbo S is the optional titanium link pipe set without cats, perfectly finished with a coating to offer greater durability without altering the look. Designed to create the best exhaust flow and offering a huge weight saving over stock—when used in conjunction with the Slip-On—the link pipes increase power and give the car a sporty racing sound. Enhancing the tuning opportunities of this superb car, the link pipes without cats are an easy-to-install performance upgrade.

porsche

Fits:
Porsche 991 (911) Turbo/Turbo S 2014>>

TECHNICAL DATA
** measured with: Porsche 911 Turbo/Turbo S (991) 2014

Maximum power:
- kW: plus 7.1 / 5400 rpm
- HP (m): plus 9.7 / 5400 rpm
- HP (i): plus 9.6 / 5400 rpm

Maximum torque:
- Nm: plus 50.0 / 2300 rpm
- lb-ft: plus 36.9 / 2300 rpm

Weight:
- minus 5.6 kg / 12.4 lb

Please note: When installing Akrapovič aftermarket optional link pipes without catalytic converters, which are developed for use on closed tracks only, remapping the ECU is mandatory. Akrapovic Delete-R will not eliminate possible engine check errors codes caused by increasing emissions flow.

THIS PRODUCT DOES NOT MEET EMISSION COMPLIANCE REQUIREMENTS FOR STREET OR HIGHWAY USE.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

L-PO991T
99711300930
997113009AX
99711301030
997113010AX

The product you are viewing cross references to these numbers
Special Offer
DesignTek Exhaust manifold / header with 200 cell catalyst for Porsche 991 Carrera
Code: 3606109915
A Voucher for £100 available when you buy this product. For more information CLICK HERE

DesignTek Exhaust manifold / header with 200 Cell Euro 4 coating substrate.
Price is for PAIR.

designtek

Fits:
Porsche 991.1 Carrera / S

Please note: sports catalytic converters or bypass pipes do have type approval and may not be legally installed on vehicles manufactured after 1st March 2001. They can not be used on a public road and are not MOT compliant, they are designed for race and track cars only. 


Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

3606109915
3606109875
99111341104
991113411AX
99111341202
99111341204
991113412AX

The product you are viewing cross references to these numbers
Best Product
DesignTek Exhaust manifold / header with catalyst bypass for Porsche 991 Carrera
Code: 3606109918
A Voucher for £100 available when you buy this product. For more information CLICK HERE

DesignTek Exhaust manifold / header with catalyst bypass.
Price is for PAIR.

designtek

Fits:
Porsche 991.1 Carrera / S

Please note: sports catalytic converters or bypass pipes do have type approval and may not be legally installed on vehicles manufactured after 1st March 2001. They can not be used on a public road and are not MOT compliant, they are designed for race and track cars only. 


Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

3606109918
99111341104
991113411AX
99111341202
99111341204
991113412AX

The product you are viewing cross references to these numbers
Best Product
DesignTek Exhaust manifold / header with catalyst bypass for Porsche 991 Carrera
Code: 3606109919
A Voucher for £100 available when you buy this product. For more information CLICK HERE

DesignTek Exhaust manifold / header with catalyst bypass.
Price is for PAIR.

designtek

Fits:
Porsche 991.1 Carrera 3.4L 2012-2015
Porsche 991.1 Carrera S 3.82012-2015


Please note: sports catalytic converters or bypass pipes do have type approval and may not be legally installed on vehicles manufactured after 1st March 2001. They can not be used on a public road and are not MOT compliant, they are designed for race and track cars only. 



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

3606109919
99111341104
991113411AX
99111341202
99111341204
991113412AX

The product you are viewing cross references to these numbers
Best Product
Exhaust cat bypass pipes Porsche 991.1 / 991.2 Turbo / Turbo S
Code: 3606109916
Exhaust cat bypass pipes with gaskets.

designtek

Fits:
Porsche 991.1 Turbo / Turbo S

Porsche 991.2 Turbo / Turbo S

Free-flowing straight pipes replace the bulky & restrictive factory catalytic converters; designed specifically for maximum flow during racing or competition.

FEATURES:
• Maximizes power and throttle response while decreasing back pressure.
• Completely removes the catalytic converters for maximum exhaust flow and performance.
• Constructed from high-quality stainless steel for optimum flow and maximum durability.
• Direct replacement bolt-on for stock cat or Sport Cats

DISCLAIMER: This product removes the OEM catalytic converters from the vehicle, and as such, is strictly intended for closed track events and off-road use only. This product is or contains a Racing Cat Bypass Pipe, which will give you check engine lights on OBD2 cars. We suggest pairing this product with racing software to prevent fault codes and check engine lights. Racing Cat Bypass Pipes are solely intended for track and race cars as they are NOT California Air Resources Board Certified and not EPA certified. You are hereby informed and warned to check your local, state, and federals laws before buying and installing these or any aftermarket parts to be sure whether usage is in violation. All installation-risk and use-risk is borne by the end-user and installer of these parts.

Please note: sports catalytic converters or bypass pipes do have type approval and may not be legally installed on vehicles manufactured after 1st March 2001. They can not be used on a public road and are not MOT compliant, they are designed for race and track cars only. 



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

3606109916
99711301030
99711300930
997113010AX
997113009AX

The product you are viewing cross references to these numbers
Best Product
Exhaust Cat bypass Pipes. Porsche 991 Turbo / Turbo S
Code: FSPOR991TCB
Fabspeed Exhaust Cat bypass Pipes.

fabspeed

Increase exhaust flow from the headers to the mufflers and improving power and sound by removing the bulky and restrictive factory catalytic converter.

FEATURES:
Fits all 991 Turbo vehicles (2013+)
• Fabspeed's Cat bypass Pipes replace the restrictive factory catalytic converters with much less restrictive straight-through pipes for maximum flow and performance
• Noticeable increase in power and improved throttle response
• Saves 10 lbs in the rear of the vehicle versus the bulky factory catalytic converters
• Adds aggressive exhaust note for high performance sound
• Constructed from high-quality 14-16 gauge C.N.C. mandrel-bent T304L stainless steel for optimum flow and maximum durability
• Direct bolt-on replacement
• All Fabspeed performance products are backed by the Fabspeed Lifetime Limited Warranty

Please note: This is a special-order item manufactured to order. In some cases, please allow 4 – 5 weeks for the delivery. Special order items cannot be cancelled from this supplier once your order has been placed.

Please note: sports catalytic converters or bypass pipes do have type approval and may not be legally installed on vehicles manufactured after 1st March 2001. They can not be used on a public road and are not MOT compliant, they are designed for race and track cars only. 


Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

FSPOR991TCB
99711300930
997113009AX
99711301030
997113010AX

The product you are viewing cross references to these numbers
Best Price
Exhaust sleeve catalytic converter to silencer. Porsche 996 / 997
Code: 99711152000/1
Exhaust sleeve catalytic converter to silencer.
connecting sleeve from cat to rear silencer. Price is for each sleeve.

oematch

Fits:
Porsche 996 1998-05 (not Turbo and GT2)

Porsche 997 2005>> (not Turbo and GT2)

Porsche 991 Carrera C2 3.4L (350Bhp)
Porsche 991 Carrera C2S 3.8L (400Bhp)
Porsche 991 Carrera C4 3.4L (350Bhp)
Porsche 991 Carrera C4S 3.8L (400Bhp)
   Fits cars with and without sport exhaust

Click 'Zoom in' for large parts diagram.
Diagram ref no 13



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99711152000
004-854
99611122002
99611122002
99711152000
1621400600
1621401600

The product you are viewing cross references to these numbers
Best Product
Exhaust sleeve catalytic converter to silencer. Porsche 997
Code: 99711152000
Exhaust sleeve catalytic converter to silencer.
Price is for each sleeve.

porsche

Original Porsche connecting sleeve from cat to rear silencer.

Fits:
Porsche 997 2005>> (not Turbo and GT2)
    Fits cars with and without sport exhaust

Porsche 991 Carrera C2 3.4L (350Bhp)
Porsche 991 Carrera C2S 3.8L (400Bhp)
Porsche 991 Carrera C4 3.4L (350Bhp)
Porsche 991 Carrera C4S 3.8L (400Bhp)

Click 'Zoom in' for large parts diagram.
Diagram ref no 13



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99711152000
99711152000
99711152000
99711152000

The product you are viewing cross references to these numbers
Porsche Genuine Parts
Exhaust sleeve in titanium catalytic converter to silencer. Porsche 996 / 997
Code: 99711152000/2
Titanium (grade 5) Exhaust sleeve catalytic converter to silencer.
Connecting sleeve from cat to rear silencer. Price is for each sleeve.

rohler

Fits:
Porsche 996 1998-05 (not Turbo and GT2)
Porsche 997 2005>> (not Turbo and GT2)
Porsche 991 Carrera C2 3.4L (350Bhp)
Porsche 991 Carrera C2S 3.8L (400Bhp)
Porsche 991 Carrera C4 3.4L (350Bhp)
Porsche 991 Carrera C4S 3.8L (400Bhp)

Fits cars with and without sport exhaust
Grade 5 titanium is resistant to salt water and variety of corrosive media temperatures below 300°C

Click 'Zoom in' for large parts diagram.
Diagram ref no 13



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99711152000
004-854
99611122002
99611122002
99711152000
1621400600
1621401600

The product you are viewing cross references to these numbers
Best Product
Exhaust Sport Catalytic Converters. Porsche 991 Turbo / Turbo S
Code: FSPOR991TSC
Fabspeed Exhaust Sport Catalytic Converters.

fabspeed

High-flowing, direct bolt-on replacement for the bulky & restrictive factory catalytic converters.

FEATURES:
Fits all 991 Turbo vehicles (2013+)
• Improves power and throttle response while decreasing back pressure
• High flow sport race cat for maximum flow and power.
• Constructed from high-quality 14-16 gauge T304L stainless steel for optimum flow and maximum durability
• Includes integrated O2 sensor bung for fuel-injected cars
• Direct replacement bolt-on for stock cat or cat bypass pipe

NOTE: Fabspeed's 200-cell high-flow catalytic converters are not C.A.R.B. certified and are for Off-Road Use ONLY in the state of California

Please note: This is a special-order item manufactured to order. In some cases, please allow 4 – 5 weeks for the delivery. Special order items cannot be cancelled from this supplier once your order has been placed.

Please note: sports catalytic converters or bypass pipes do have type approval and may not be legally installed on vehicles manufactured after 1st March 2001. They can not be used on a public road and are not MOT compliant, they are designed for race and track cars only. 


Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

FSPOR991TSC
99711300930
997113009AX
99711301030
997113010AX

The product you are viewing cross references to these numbers
Best Price
Headers with 300 Cell Race Cats Porsche 991 GT3 - DesignTek
Code: 3606309105
Headers with 300 Cell Race Cats

designtek

High quality T304 Stainless steel equal length primary tubes. C.N.C. mandrel bent.

Designed for maximum flow and no restriction.

Reduced back pressure and better scavenging. More torque and horsepower across the RPM band.

Fits:
Porsche 991 GT3 3.8L 476 Bhp 2013 - 2017 (A175 engine)
Porsche 991 GT3 RS 4.0L 507 Bhp 2013 - 2017 (A175 engine)
Porsche 911 R 4.0L 507Bhp 2014-2017 (A176 engine)

Please note: This will not fit cars:
- with engine codes DNSA / DNSB - 4.0L with 520 Bhp
- released after 06/2017 with engine codes DGG / DGGA / DGGB

Please note: These sport cats will make your car sound louder than with stock cats. If you have ,or intend to install sport silencers, you may find the car is a bit loo loud. We recommend to use one sport exhaust component if you are concerned about decibel levels.

Please note: sports catalytic converters or bypass pipes do have type approval and may not be legally installed on vehicles manufactured after 1st March 2001. They can not be used on a public road and are not MOT compliant, they are designed for race and track cars only. 


Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

3606309105
9A111302190
9A1113021CX
9A111302191
9A1113021AX
9A111302290
9A1113022CX
9A111302291
9A1113022AX

The product you are viewing cross references to these numbers
Best Product
Headers with Race Cat Bypass Porsche 991.2 GT3 / RS - DesignTek
Code: 3606309106
Headers with Race Cat bypass

designtek

High quality T304 Stainless steel equal length primary tubes. C.N.C. mandrel bent.

Designed for maximum flow and no restriction.

Reduced back pressure and better scavenging. More torque and horsepower across the RPM band.

Fits:
Porsche 991.2 GT3 4.0L 500 Bhp 2017-2020 (DGG / DGGA engine)
Porsche 991.2 GT3 RS 4.0L 520 Bhp 2017 - 2020 (DGGB engine)

Please note: This will not fit cars:
- with engine codes DNSA / DNSB - 4.0L with 520 Bhp

Please note: These race cats will make your car sound significantly louder than with stock cats. Race track and off road use only.
We recommend to use one sport exhaust component if you are concerned about decibel levels.

Please note: sports catalytic converters or bypass pipes do have type approval and may not be legally installed on vehicles manufactured after 1st March 2001. They can not be used on a public road and are not MOT compliant, they are designed for race and track cars only. 


Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

3606309106
9A111302195
9A1113021FX
9A111302295
9A1113022FX

The product you are viewing cross references to these numbers
Best Product
Lambda Sensor Blanking Plug and Receiver Socket. Porsche 996 / 997
Code: 100390100392
Lambda Sensor Blanking Plug and Receiver Socket Set.
In case you need to relocate your existing lambda probe because it's not in the right location. Welding and cutting specialist required.


Fits:
Many Porsche vehicles. Universal kit.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

100390100392
100390
100392

The product you are viewing cross references to these numbers
Best Price
Sports exhaust catalytic converter delete pipes Porsche 911 turbo and 911 turbo S
Code: TSPO991T13.403.ANK
Sports exhaust catalytic converter delete pipes Porsche 911 turbo and 911 turbo S 2013-2019
Fits both 991.1 and 991.2

tubi

Fits 2013-2019
Porsche 911 turbo 991.1
Porsche 911 turbo S 991.1
Porsche 911 turbo 991.2
Porsche 911 turbo S 991.2


RACETRACK USE ONLY
These components are designed and developed for racetrack use and to maximise the car's performance. They are not street legal and must be installed by professionals in the sector.

CATALYTIC CONVERTER REMOVAL
Complete removal of the catalytic converter minimises exhaust back pressure and delivers optimum results in terms of performance and weight reduction.

ECU REMAPPING - ENGINE LIGHT
Replacement or removal of components such as catalytic converters, GPFs and electric actuators may cause the engine warning light to come on. In this case, the installer must reprogram the software to eliminate the light.

MATERIAL
AISI 304 STAINLESS STEEL
A choice stainless steel ideal for aggressive environments where combustion emissions can cause serious chemical corrosion on other types of metal.

MAIN PIPE DIMENSION - 65mm
This is the diameter of the main pipe of the exhaust system.

Please note: sports catalytic converters or bypass pipes do have type approval and may not be legally installed on vehicles manufactured after 1st March 2001. They can not be used on a public road and are not MOT compliant, they are designed for race and track cars only. 
Best Price
Sports exhaust catalytic converter Porsche 911 turbo and turbo S 2013-2019
Code: TSPO991T13.303.AK
Sports exhaust catalytic converter cell reduction pipe Porsche 911 turbo and 911 turbo S 2013-2019

tubi

Fits
Porsche 911 turbo 991.1
Porsche 911 turbo S 991.1
Porsche 911 turbo 991.2
Porsche 911 turbo S 991.2
2013-2019

RACETRACK USE ONLY
These components are designed and developed for racetrack use and to maximise the car's performance.
They are not street legal and must be installed by professionals in the sector

CATALYTIC CONVERTER REDUCED TO 200 CELLS
Race catalytic converters have fewer cells than standard factory systems. This reduces exhaust back pressure while still maintaining the operation of the catalytic converter, and improves performance and sound

ECU REMAPPING - FOR PERFORMANCE
On turbo cars, catalytic converter replacement may modify turbocharger operating conditions and cause a deterioration of the torque delivery curve. To ensure full benefit from the new racing component, the engine's ECU must be reprogrammed to maximise performance. If the engine warning light comes on, the ECU must always be reprogrammed to eliminate it

MATERIAL
AISI 304 STAINLESS STEEL
A choice stainless steel ideal for aggressive environments where combustion emissions can cause serious chemical corrosion on other types of metal

MAIN PIPE DIMENSION - 65mm
This is the diameter of the main pipe of the exhaust system

Please note: sports catalytic converters or bypass pipes do have type approval and may not be legally installed on vehicles manufactured after 1st March 2001. They can not be used on a public road and are not MOT compliant, they are designed for race and track cars only. 
Best Price
Sports exhaust manifold and catalytic converter kit Porsche 991 GT3 GT3 RS and R
Code: TSPO991GT306.073.A
Sports exhaust manifold and catalytic converter kit Porsche 991 GT3 GT3 RS and R

tubi

Fits
991.1 and 991.2
Porsche 911 GT3
Porsche 911 GT3 RS
Porsche 911 R


The product can be fitted on 991 R, GT3, GT3 RS models, both 991.1 and 992.2 Not for 997

The component is perfectly interchangeable with the original components, following the instructions in the constructor's workshop manual

RACETRACK USE ONLY
These components are designed and developed for racetrack use and to maximise the car's performance. They are not street legal and must be installed by professionals in the sector

REDUCED CELL CATALYTIC CONVERTER - 300 CELLS
Race catalytic converters have fewer cells than standard factory systems. This reduces exhaust back pressure while still cutting pollutant emissions and boosts power and sound

ECU REMAPPING - ENGINE LIGHT
Replacement or removal of components such as catalytic converters, GPFs and electric actuators may cause the engine warning light to come on. In this case, the installer must reprogram the software to eliminate the light

END TIPS DESIGN - OE
The muffler must be used in conjunction with the original exhaust end tips

MATERIAL - AISI 304 STAINLESS STEEL
A choice stainless steel ideal for aggressive environments where combustion emissions can cause serious chemical corrosion on other types of metal

MAIN PIPE DIMENSION - 80mm
This is the diameter of the main pipe of the exhaust system

Please note: sports catalytic converters or bypass pipes do have type approval and may not be legally installed on vehicles manufactured after 1st March 2001. They can not be used on a public road and are not MOT compliant, they are designed for race and track cars only. 
Best Price
DISPLAYING 1 to 16 (of 16 products)
Also found on these pages
About Catalyst / Bypass

Title: Porsche Exhaust Catalyst and Bypass Sports Catalyst: Technical Specifications and Benefits

Key Points:

Enhanced Performance: Upgrading your Porsche's exhaust catalyst or opting for a bypass sports catalyst can significantly improve performance by increasing horsepower and torque output. These aftermarket options are designed to optimize exhaust flow, resulting in improved engine efficiency and throttle response.

Enhanced Sound: An original Porsche or aftermarket exhaust catalyst can enhance the auditory experience of your vehicle. They offer a deeper, more aggressive exhaust note, providing a sportier sound that complements the performance-oriented nature of a Porsche.

Compliance with Emissions Standards: When purchasing an exhaust catalyst, it is crucial to consider its compliance with local emissions regulations. Porsche exhaust catalysts are engineered to meet strict emissions standards, ensuring that your vehicle remains environmentally friendly while delivering enhanced performance.

Quality and Durability: Original Porsche exhaust catalysts are manufactured to the highest standards, ensuring exceptional quality and durability. Aftermarket options from reputable brands also offer similar reliability, providing a long-lasting solution for your Porsche's exhaust system.

Easy Installation: Both original Porsche and aftermarket exhaust catalysts are designed to be direct replacements, making installation relatively straightforward. However, it is essential to follow the manufacturer's instructions or seek professional assistance to ensure proper fitment and optimal performance.

At Design911, we understand the importance of finding the correct part for your Porsche and providing the best professional advice. Our dedicated team of experts specializes in Porsche parts and accessories, including exhaust catalysts. With our extensive knowledge and experience, we can assist you in finding the right exhaust catalyst or bypass sports catalyst for your Porsche model, taking into account your specific requirements and local regulations. We are committed to delivering top-quality products and ensuring customer satisfaction. Contact us today for personalized assistance and an enhanced driving experience with your Porsche.

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