Catalyst / Bypass

Fabspeed Sport Catalytic Converters.
German-imported 200-cell HJS Sport Cats increase exhaust flow for better power and throttle response and improved sports car sound.

FEATURES:
• Fits all Porsche 997.1 GT2 vehicles (2008-2009)
•  Less backpressure and improved throttle response
•  Constructed from high-quality  14-16 gauge, C.N.C. mandrel bent T304 Stainless Steel
•  Optimized for maximum performance with NO catalyst generated check engine light, guaranteed
•  Emissions-compliants in 49 states (excludes CA)Simple DIY installation; no cutting or welding required
•  All Fabspeed performance products are backed by the Fabspeed Lifetime 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.

NOTE: Sports catalytic converters and bypass pipes do not have type approval and are not legally permitted for use on vehicles manufactured after 1st March 2001 in the United Kingdom. They are not MOT compliant and must not be used on public roads. These components are intended for race and track use only. If you are located outside the UK, please consult your local laws and regulations to ensure compliance.

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FSPOR997GT2SC

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Fabspeed Sport Headers.

The Fabspeed Sport Headers are a high-performance replacement for the factory exhaust manifolds and catalytic converter assemblies on the 2006–2009 Porsche 997 GT3 and GT3 RS.

Fits:

• Porsche 997 MK1 GT3 / GT3 RS 2006-09

Designed to improve exhaust flow throughout the engine's operating range, these headers use high-velocity 3-into-1 merge collectors to combine exhaust gases efficiently before they pass through the supplied 200-cell HJS Sport Catalytic Converters.

The system is manufactured from high-quality 14–16 gauge CNC mandrel-bent stainless steel, providing excellent resistance to heat, corrosion and repeated thermal cycling.

Fabspeed reports gains of approximately 22 horsepower and 37 lb-ft of torque, together with a 2 lb reduction in weight compared with the factory arrangement. Actual results will vary depending on vehicle condition, specification and operating conditions.

What This Product Does:
The exhaust headers collect combustion gases leaving the engine cylinders and direct them into the remainder of the exhaust system.

Efficient header design is particularly important on the naturally aspirated GT3 engine because exhaust pulse timing and scavenging influence how effectively the cylinders can clear spent gases and draw in the next intake charge.

The Fabspeed Sport Headers are designed to:

• Improve exhaust gas flow
• Reduce restriction compared with the factory header and catalyst arrangement
• Improve exhaust scavenging
• Increase throttle response
• Support increased horsepower and torque
• Produce a stronger sports-car exhaust note
• Provide high-flow catalytic converter performance
• Replace ageing or damaged factory exhaust manifolds
• Reduce a small amount of rear exhaust weight

The 3-into-1 pyramidal merge collectors are designed to combine the exhaust pulses from each cylinder bank smoothly, helping maintain gas velocity and reduce turbulence.

Symptoms Of Wear Or Failure:
The original headers and catalytic converters operate under extreme temperatures and experience repeated expansion and contraction throughout their service life.

Common signs of deterioration include:

• Ticking or tapping noises during cold starts
• Blowing or hissing sounds from the exhaust manifold area
• Black soot around leaking header joints
• Cracks in the manifold or welds
• Warped mounting flanges
• Broken or corroded mounting hardware
• Exhaust fumes around the engine or rear of the vehicle
• Increased exhaust noise
• Reduced throttle response
• Noticeable loss of engine performance
• Check Engine Light relating to catalyst efficiency
• Metallic rattling from inside a catalytic converter
• Sulphur-like or unusual exhaust smells
• Increased exhaust restriction
• Loss of power at higher engine speeds
• Excessive heat around the catalyst area

A catalytic converter can also deteriorate internally. The substrate may crack, melt or break apart, potentially restricting the exhaust path.

Why Replacement Matters:
A damaged or leaking exhaust header reduces the efficiency of the exhaust system and can allow extremely hot gases to escape into surrounding areas.

Cracks or leaking flanges can cause:

• Unwanted exhaust noise
• Reduced exhaust scavenging
• Heat exposure to surrounding components
• Loss of engine response
• Further deterioration of exhaust joints and hardware

A deteriorating catalytic converter can be equally problematic.

If the catalyst substrate becomes damaged or partially blocked, exhaust gases cannot leave the engine efficiently. Increased backpressure can reduce performance and place additional thermal stress on the exhaust system.

Replacing deteriorated headers and catalysts helps restore:

• A secure and leak-free exhaust path
• Efficient exhaust scavenging
• Correct exhaust gas flow
• Consistent throttle response
• Proper catalyst function
• Reduced exhaust restriction
• Reliable long-term exhaust operation

For vehicles with healthy factory components, upgrading to the Fabspeed system provides the additional benefit of freer-flowing headers and sport catalysts designed to improve overall engine response.

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FSPOR997GT3SHDR

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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.

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100390100392

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DesignTek Sport Center Section for 997GT3, 997GT3 RS and GT3 Cup cars - Stainless Steel Polished with Matt Black pipes



This sports centre sections is a direct bolt on replacement, you don't even need to removal of bumper, Proprietary megaphone design- mandrel bent tubing which saves 14 lbs over the stock center section ( GT3 , RS with Ti center muffler saves 5 lbs )
Sport button remains fully functional for every day use, absolutely NO modifications. This system offers a deep aggressive exhaust note over the Porsche stock system the factory primary mufflers, catalyst and exhaust flaps are all retained

The DesignTek Sport Center Section system is a direct bolt on replacement center section which reduces weight, improves sound and offers a mild increase in performance. Porsche has done a wonderful job with the design and manufacture of the factory system with virtually no improvement to be made by installing a complete (mufflers, headers and cats) aftermarket system.

Direct bolt on replacement center section with dual 3.5 stainless tips (factory offers dual 3"). The system is made of mandrel bent T304 stainless tubing which is TIG welded and features a proprietary megaphone design to improve sound in the upper RPM range. The system saves over 14 lbs of weight over the stock ( stock gt3) and (5 lbs over GT3RS with Ti muffler), power is up 3-5 hp on average and now the sound is finally worthy of this magnificent engine.

Fits:
Porsche 997 GT3 / GT3RS 2007>>

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3606609717

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Ninemeister sports catalytic converters for Porsche 997.1. Manufactured from lightweight SS304L stainless steel, these replacement catalysts use Belgium-made TriCore 300-cell cores to increase exhaust flow while retaining catalytic gas treatment.

Fits:

• Porsche 997 MK1 Carrera 2 3.6L 2005-08
• Porsche 997 MK1 Carrera 2S 3.8L 2005-08
• Porsche 997 MK1 Carrera 4 3.6L 2005-08
• Porsche 997 MK1 Carrera 4S 3.8L 2005-08

What This Product Does

These sports catalysts replace the original catalytic converter sections within the exhaust system. Their higher-flow construction reduces back pressure and allows exhaust gases to pass more freely, while the catalytic cores continue to convert carbon monoxide, hydrocarbons and nitrogen oxides. The resulting installation is designed to provide a more pronounced exhaust note and save 2.5 kg compared with the original arrangement.

Functions

• Replaces the original Porsche 997.1 catalytic converter sections
• Uses 300-cell catalyst cores to support increased exhaust flow
• Reduces exhaust back pressure
• Treats carbon monoxide, hydrocarbons and nitrogen oxides
• Produces a more sporting exhaust note
• Provides a stated weight saving of 2.5 kg

Technical Details

• Lightweight SS304L stainless-steel construction
• Belgium-made TriCore 300-cell catalytic converters
• Two-part catalyst construction within each downpipe
• Three-spiral metallic carrier structure designed to resist pressure waves and exhaust pulses
• Effective operating temperature: 480–1470°F; short-term tolerance: 1650–1830°F; long-term tolerance: no more than 1560°F
• Manufacturer-described as MOT compliant and designed to operate without a catalyst-related check-engine light

The purification coating uses platinum, palladium and rhodium. Platinum supports the oxidation of carbon monoxide and hydrocarbons, palladium assists with unburnt hydrocarbon conversion, and rhodium provides nitrogen-oxide reduction. The manufacturer specifies Euro 6 standard purification coatings with a high density of precious metals.

Symptoms of Fault

• Catalyst-efficiency warning or check-engine light
• Rattling caused by a damaged internal substrate
• Restricted exhaust flow or reduced engine response
• Unusual exhaust smells or excessive heat
• Exhaust leakage around the catalyst flanges or joints
• Failure to meet the required emissions limits during testing

Why Replacement Matters

A deteriorated or obstructed catalyst can restrict exhaust flow, create rattling noises and cause emissions-related faults. These Ninemeister replacements combine higher-flow 300-cell cores with stainless-steel downpipes, making them suitable when renewing worn original units or changing the exhaust for reduced back pressure and a stronger exhaust note. Persistent misfires, oil consumption or over-fuelling should be corrected before installation, as prolonged exposure to excessive exhaust temperatures can shorten catalyst life.

FAQs

• What cell density do these catalysts use? They contain TriCore 300-cell catalytic converter cores.
• What are the downpipes made from? The construction uses lightweight SS304L stainless steel.
• Will they cause a check-engine light? Ninemeister describes the product as producing no catalyst-related CEL, provided the vehicle and its emissions-control components are operating correctly.
• Are they MOT compliant? The manufacturer lists the catalysts as MOT compliant, although the result of an emissions test also depends on the condition and calibration of the vehicle.

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9M99711303402

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