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- Porsche 997 MK1 TURBO 2007-09
To Fit:
Porsche 997.1 Turbo models 2007-2009
At the beginning of the development process of this product we spent a lot of time thinking what would be the preferred way to build a Y-pipe; here is the result of our conclusions and development process!
Significant advantages with Do88's Y-pipe compared to the OEM pipe:
• Much larger inner diameter for improved air flow, do88 62% higher!
• 70mm mandrel bent aluminium pipes.
• Smooth flow cast collector part.
• Smooth internal surface for best air flow.
• Comes with high quality silicone hoses and accessories for installation.
• See enlarged images for more information!
Our pipe has both a very good flow rate and a low weight which is achieved by combining mandrel bent lightweight pipes with a high quality 3D freeform designed cast joint between them. Onto the cast part we then welded CNC-machined connections for bov and breather hoses.This construction adds a lot of performance but only small amount of extra weight. Do88 Performance Y-pipe weight 1,52 kg (3,35 lb) OEM plastic pipe weight 1,38 kg (3,04 lb) and a competitors cast performance pipe weight 2,76kg (6,08 lb)!
The pipes are then finished in a high quality powder coat that makes them look as good as they perform! You can choose between the more discrete semi gloss black and a fresh silver metallic finish.
The kit also includes 2 high quality custom designed silicone hoses which are available in two different versions. Which version you need depends on if you will install the Y-pipe together with the OEM intercoolers or the do88 performance intercoolers.
When it comes to air flow performance our do88 Y-pipe totally outperforms the OEM Y-pipe by 62% increased flow at the same pressure drop! On our final tests of this Y-pipe together with our intercoolers on a Stage 1 tuned 997.2 Turbo PDK we measured a great performance increase. In all tests the car was driven in Sport Plus, automatic gear change and AC off. From our five in a row full throttle accelerations between 40-270 km/h (25-168 mph) we have very accurate and consistent test data for the range 50-250 km/h (31-155 mph). When analyzing the numbers, we found that we cut down the acceleration time for 50-250 km/h (31-155 mph) by 3 seconds!
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Extreme High Flow Performance Y-Pipe
To Fit: Porsche 911 (997.1 Turbo ) models 2007-2009
At the beginning of the development process of this product we spent a lot of time thinking what would be the preferred way to build a Y-pipe; here is the result of our conclusions and development process!
Significant advantages with Do88's Y-pipe compared to the OEM pipe:
• Much larger inner diameter for improved air flow, do88 62% higher!
• 70mm mandrel bent aluminium pipes.
• Smooth flow cast collector part.
• Smooth internal surface for best air flow.
• Comes with high quality silicone hoses and accessories for installation.
• See enlarged images for more information!
Our pipe has both a very good flow rate and a low weight which is achieved by combining mandrel bent lightweight pipes with a high quality 3D freeform designed cast joint between them. Onto the cast part we then welded CNC-machined connections for bov and breather hoses.This construction adds a lot of performance but only small amount of extra weight. Do88 Performance Y-pipe weight 1,52 kg (3,35 lb) OEM plastic pipe weight 1,38 kg (3,04 lb) and a competitors cast performance pipe weight 2,76kg (6,08 lb)!
The pipes are then finished in a high quality powder coat that makes them look as good as they perform! You can choose between the more discrete semi gloss black and a fresh silver metallic finish.
The kit also includes 2 high quality custom designed silicone hoses which are available in two different versions. Which version you need depends on if you will install the Y-pipe together with the OEM intercoolers or the do88 performance intercoolers.
When it comes to air flow performance our do88 Y-pipe totally outperforms the OEM Y-pipe by 62% increased flow at the same pressure drop! On our final tests of this Y-pipe together with our intercoolers on a Stage 1 tuned 997.2 Turbo PDK we measured a great performance increase. In all tests the car was driven in Sport Plus, automatic gear change and AC off. From our five in a row full throttle accelerations between 40-270 km/h (25-168 mph) we have very accurate and consistent test data for the range 50-250 km/h (31-155 mph). When analyzing the numbers, we found that we cut down the acceleration time for 50-250 km/h (31-155 mph) by 3 seconds!
Included parts in this kit:
• Full aluminium performance Y-pipe
• Silicone hoses
• Hose clamps
• Hose adaptors if the Y-pipe will be installed together with OEM intercoolers
Porsche High Flow Y-Pipe - Performance Intake & Exhaust Upgrade
High Flow Y-Pipes are designed to improve airflow efficiency within the Porsche intake or exhaust system by reducing restriction and turbulence. By optimising the flow of air, a high flow Y-pipe helps improve throttle response, engine breathing, and overall performance—particularly in tuned or high-output Porsche engines.
Available from Design911, Porsche high flow Y-pipes are precision-engineered using smooth-bore designs and high-quality materials to deliver improved flow characteristics while maintaining OEM-style fitment and reliability.
What Does a High Flow Y-Pipe Do?
A high flow Y-pipe improves airflow efficiency where multiple air paths merge.
Core Functions:
- Reduce airflow restriction and turbulence.
- Improve engine breathing and throttle response.
- Enhance intake airflow.
- Support increased power output in tuned engines.
- Improve efficiency under high load and RPM.
Optimised airflow is essential for consistent engine performance and responsiveness.
Why Do Standard Y-Pipes Fail?
Factory Y-pipes are often designed with compromise in mind
and can degrade or restrict flow over time. Common issues include:
- Internal restrictions limiting airflow.
- Cracking or fatigue from heat and vibration.
- Plastic or thin-wall construction failure.
- Warping under increased temperatures.
- Inability to support increased airflow from tuning.
These limitations can reduce performance and create bottlenecks in high-output engines.
Why Upgrade to a High Flow Y-Pipe?
Performance Y-pipes are engineered to maximise flow and durability.
Upgrade Benefits:
- Smoother internal bore for improved airflow.
- Stronger materials for heat and vibration resistance.
- Improved throttle response and power delivery.
- Ideal for tuned, modified, or track-driven engines.
- Complements intake, exhaust, and ECU upgrades.
Upgrading the Y-pipe helps unlock performance potential while improving long-term reliability.
Highlights
- Porsche high flow Y-pipe performance upgrades
- Reduced airflow restriction and improved efficiency
- Designed for tuned and high-output engines
- Durable construction for heat and vibration resistance
- Supports intake and exhaust performance upgrades
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Pulleys
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Engine / Gearbox Mounts
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Oil Flow / Sump
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IMS Bearings
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Engine Rods and Bolts
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Thermostats
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Radiators
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Air Filters
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Air Induction Kits
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Performance Plenum
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Electronic Fuel Injection Throttle Kits
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ECU Re-Mapping DIY
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Electronic Throttle Booster
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IRIDIUM POWER Spark Plugs
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IRIDIUM RACING Spark Plugs
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Plasma Direct Coils
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Clutches / Flywheels
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Hoses / Kits
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Diverter Valves
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Inter Coolers
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Turbo Chargers
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ECU Reader / Fault Finder
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Exhaust Packages
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Supercharger Kits
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Fuel Additives
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Wössner Forged Piston Kit
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Wössner Steel Connecting Rods
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CP Carrillo Connecting Rods
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Capricorn Engine parts
