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Porsche > 997 (911) MK1 2005-2008 > 997 MK1 Carrera 4 3.6L 2005-08 > Engine Tuning >

Exhaust Packages

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Sports Exhaust & catalytic converter bypass X-Pipes Package Porsche 997 C2 / C4 / C4S - 3606109976, 3606009716
1
Sports Exhaust & catalytic converter bypass X-Pipes Package Porsche 997 C2 / C4 / C4S
EXHAUSTKIT29
Product Information
Product Information
Sports Exhaust VALVETROINC + catalytic converter bypass X-Pipes Package
designtek

DesignTek Valvetronic sports exhaust system gives smooth and high torque feel to the wheels with the valves opened, Made from high quality 14-16 gauge T304 stainless steel, hydro-formed muffler cases, radiuses stressed relieved with 2000 degree ceramic fibre and stainless steel wool packed free flow mufflers. If you have a factory Porsche PSE (Porsche sport exhaust) this system can replace the original exhaust boxes, you will be able to use the original switches in your car

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.

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Related, superseded, cross reference or alternative numbers for comparison.

EXHAUSTKIT29
3606109976
3606009716

The product you are viewing cross references to these numbers
Sports Exhaust Headers & Cats Package (+27 to 30 bhp) Porsche 997.1 C2 / C4 / C4S
1
Sports Exhaust Headers & Cats Package (+27 to 30 bhp) Porsche 997.1 C2 / C4 / C4S
EXHAUSTKIT36
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Product Information
DesignTek Sports Exhaust + X-Pipe Sports Cats + Equal Length Headers Package

Fits
Porsche 997.1 Carrera 2 3.6L 2005 - 2008
Porsche 997.1 Carrera 2S 3.8L 2005 - 2008
Porsche 997.1 Carrera 4 3.6L 2005 - 2008
Porsche 997.1 Carrera 4S 3.8L 2005 - 2008

DesignTek sports exhaust system gives smooth Bhp & Torque. Made from high quality 14-16 gauge T304 stainless steel, hydro-formed muffler cases, radiuses stressed relieved with 2000 degree ceramic fiber and stainless steel wool packed free flow mufflers.

DesignTek X-pipe sports racing catalytic converters give a HORSEPOWER and TORQUE gain to all 997 cars. High Quality T304 SS C.N.C. mandrel bent tubing for maximum exhaust flow.

The Equal length headers reduced backpressure and less restriction.
SWITCH CONSOLE for Exhaust Muffler 'Switchable' System - 99761312900, 99761312900FMH, 99761313100, 99761313100FMH
4
SWITCH CONSOLE for Exhaust Muffler "Switchable" System
Special Order item
99761312900FMH
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Product Information
This is the switch required for the original Porsche sport exhaust For cars WITHOUT "PASM" electronic damper control

This is the switch required for the original Porsche sport exhaust system our part number code 99994420103

Fits:
For cars WITHOUT "PASM" electronic damper control
Porsche 997 MKI Carrera
Porsche 997 MKI Carrera S

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

99761312900FMH
99761312900
99761312900FMH
99761313100
99761313100FMH

The product you are viewing cross references to these numbers
SWITCH CONSOLE for Exhaust Muffler 'Switchable' System - 99761312900, 99761312900FMH, 99761313100, 99761313100FMH
4
SWITCH CONSOLE for Exhaust Muffler "Switchable" System
Special Order item
99761313100FMH
Product Information
Product Information
This is the switch required for the original Porsche sport exhaust Cars WITH "PASM" electronic damper control

This is the switch required for the original Porsche sport exhaust system our part number code 99994420103


Fits:
Cars WITH "PASM" electronic damper control
Porsche 997 MKI Carrera
Porsche 997 MKI Carrera S

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

99761313100FMH
99761312900
99761312900FMH
99761313100
99761313100FMH

The product you are viewing cross references to these numbers
DISPLAYING 1 to 4 (of 4 products)
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About Exhaust Packages

Porsche Performance Exhaust Packages - Power, Sound & Flow Upgrades

Exhaust Packages are complete performance exhaust solutions designed to improve exhaust gas flow, enhance engine efficiency, and transform the sound of your Porsche. By upgrading restrictive factory components with high-flow systems, exhaust packages help reduce backpressure, improve throttle response, and unlock additional performance—especially in tuned or performance-driven engines.

Available from Design911, Porsche exhaust packages combine precision-engineered components such as headers, sports catalysts, silencers, and tailpipes to deliver a balanced upgrade in power, sound, and durability.

What Do Exhaust Packages Do?

Exhaust packages manage the efficient removal of exhaust gases from the engine.

Core Functions:

  • Reduce exhaust backpressure for improved engine breathing.
  • Enhance power delivery and throttle response.
  • Improve exhaust sound and tone.
  • Optimise exhaust flow across the RPM range.
  • Support tuning and performance modifications.

Efficient exhaust flow is essential for maximising engine performance and responsiveness.

Why Do Standard Exhaust Systems Fail?

Factory exhaust systems are designed for noise control, emissions, and cost, which can lead to performance and durability limitations. Common issues include:

  • Restrictive pipework limiting airflow.
  • Internal corrosion from heat and moisture.
  • Catalyst degradation over time.
  • Excessive weight reducing performance efficiency.
  • Incompatibility with performance tuning upgrades.

Failing exhaust components can cause power loss, rattles, leaks, and reduced engine efficiency.

Why Upgrade to a Performance Exhaust Package?

Performance exhaust packages are engineered to improve flow, sound, and reliability.

Upgrade Benefits:

  • Increased power and improved throttle response.
  • Reduced system weight for better performance.
  • Enhanced exhaust sound without excessive drone.
  • Improved durability using stainless steel or motorsport materials.
  • Ideal foundation for further engine tuning.

Upgrading the exhaust system unlocks performance potential while enhancing driving enjoyment.

Highlights

  • Porsche performance exhaust package upgrades
  • Improved exhaust flow and power delivery
  • Enhanced sound quality and tone
  • Designed for tuned and performance engines
  • High-quality materials for long-term durability       

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