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Design 911 Design 911 supply Porsche parts, Porsche spares and Porsche accessories, to both retail and to the trade. Our Porsche product and accessory range includes brakes, exhausts, tyres, wheels and Porsche panels and interiors. https://design91.uk/images/schemaLogo.png https://design91.uk/images/schemaLogo.png +443456003478 https://design91.uk Facebook Instagram
Sports exhaust downpipes with catalytic converter with OPF. Porsche 992.1 Carrera / GTS / turbo / turbo S - 9M992254400
9M992254400
Product Information
Product Information
Sports exhaust downpipes with catalytic converter and heatshield - for cars with OPF ( Otto Particulate Filter)
Sold as a pair - left and right

Fits:
Porsche 992.1 Carrera 2 / Carrera 4 - 2019 to 2024
Porsche 992.1 Carrera 2S / Carrera 4S - 2019 to 2024
Porsche 992.1 Targa 4 / Targa 4S - 2019 to 2024
Porsche 992.1 Carrera 2 GTS / Carrera 4 GTS - 2019 to 2024
Porsche 992.1 turbo / turbo S- 2019 to 2024

Features :
  • Reduced back pressure with higher flow
  • Made from SS304L lightweight stainless steel
  • Reduction in exhaust gas temperatures
  • Improved throttle response
  • Improved exhaust note with no drone, resonation or vibration
  • Saves 2.5kg weight
  • No CEL (check engine light) warning
  • Belgium made high quality tricore 300 catalytic converters using two catalyst within the downpipe
  • 20hp gain and 30nm
  • Available for cars with or without OPF 

Catalyst information:
Replacing the restrictive OEM catalyst not only enhances power but also improves sound. By upgrading to our catted downpipes increasing flow while still effectively catalyzing exhaust gases. By allowing for better exhaust gas scavenging and reducing backpressure, these modifications can increase power output, improve turbo spool, and offer a more aggressive exhaust note.
Unlike the ineffective catalytic converters found in generally cheaper aftermarket options ours has been designed for superior performance.

Our high-performance catalytic solution.

Featuring Euro 6 standard purification coatings, our catalytic converters have a higher density of precious metal coatings compared to OEM units on the same surface area. This results in superior exhaust gas conversion performance, allowing for more efficient purification when replacing with a more performance-oriented high-flow Downpipe without releasing harsh, toxic fumes. In terms of design, the catalytic converter employs a three-spiral metal carrier structure that enhances the carrier's shock resistance and durability. This ensures that the catalyst unit remains stable under the continuous impact of pressure waves and pulses from high-horsepower engines.

  • Effective operating temperature: 480°F–1470°F
  • Short-term tolerance temperature threshold: 1650°F–1830°F
  • Long-term tolerance temperature threshold: ≤1560°F Exposure to temperatures above 1470°F for extended periods will shorten the catalyst's lifespan. Main precious metal components and applications: Platinum (Pt) Characteristics: High catalytic activity, heat-resistant, corrosion-resistant. Applications: Oxidizes CO and HC (hydrocarbons). Reduces NOx. Advantages: Stable performance in both oxygen-rich and oxygen-poor environments. Palladium (Pd) Function: HC oxidation: More efficient at oxidizing unburned hydrocarbons (HC) compared to platinum. Advantages: When combined with platinum or other precious metals, it offers better conversion efficiency for unburned hydrocarbons (HC). Rhodium (Rh) Characteristics: Exceptional NOx reduction ability.



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

9M992254400
992254400G
992254400J
992254400GX
992254400JX
992254400L
992254400LX
992254450G
992254450J
992254450GX
992254450JX
992254450L
992254450LX

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