Audi B5 S4 2.7T Bi-Pipe | RS4 A6 Allroad Aluminum Y-Boot Delete | XS-POWER
Audi 2.7T One-Piece Cast Aluminum Bi-Pipe Kit
Heavy-duty one-piece throttle body bi-pipe upgrade for Audi B5 S4, B5 RS4, C5 A6 and C5 Allroad 2.7T applications. Designed to eliminate the troublesome factory-style throttle body Y-boot connection while providing a strong, performance-oriented charge-air solution for stock and upgraded turbo systems.
Audi 2.7T Bi-Pipe Upgrade
The XS-POWER one-piece aluminum Bi-Pipe is designed as a performance and reliability upgrade for the Audi 2.7T twin-turbo platform. It replaces the troublesome throttle body Y-boot arrangement with a rigid one-piece cast aluminum assembly.
On modified and higher-boost 2.7T applications, the original-style rubber throttle body boot can become a weak point in the charge-air system. Aging, heat, boost pressure and repeated heat cycles can contribute to deterioration, leaks or connection problems.
This one-piece Bi-Pipe provides a solid aluminum alternative and bolts directly at the throttle body connection. The design also incorporates enlarged recirculation/diverter valve ports to improve airflow through this area of the charge system.
Performance Features
- One-piece cast aluminum Bi-Pipe construction
- Designed specifically for Audi 2.7T twin-turbo applications listed below
- Eliminates the troublesome factory-style throttle body Y-boot
- Rigid aluminum construction for a durable charge-air connection
- Enlarged recirculation / diverter valve ports
- Designed to help reduce boost spikes during gear changes
- Designed to improve turbo response following gear changes
- Bolts to the throttle body
- O-ring style sealing design at the applicable connections
- Excellent upgrade for stock, tuned and upgraded-turbo 2.7T builds
- Ideal for restoring or upgrading aging B5 S4 and C5 2.7T charge-air systems
Vehicle Fitment
| Make | Model | Chassis | Years | Engine |
|---|---|---|---|---|
| Audi | S4 | B5 | 2000-2002 | 2.7T Twin Turbo |
| Audi | RS4 | B5 | 2000-2002 | 2.7T Twin Turbo |
| Audi | A6 | C5 | 2000-2004 | 2.7T Twin Turbo |
| Audi | Allroad | C5 | 2000-2005 | 2.7T Twin Turbo |
IMPORTANT: Fitment is intended for the 2.7T twin-turbo engine applications listed above. Always compare your existing charge-pipe layout, throttle body connection and diverter valve connections with the product photos before ordering, especially on modified vehicles or engine-swapped applications.
Why Replace the Factory Throttle Body Y-Boot?
The throttle body boot is a known area of concern on aging Audi 2.7T charge-air systems. Instead of relying on the original-style flexible Y-boot arrangement, this Bi-Pipe uses a rigid cast aluminum body to create a more substantial connection between the charge piping and throttle body.
This makes the Bi-Pipe especially attractive for enthusiasts increasing boost, installing upgraded K04-style turbochargers, or refreshing an older 2.7T charge-air system.
Looking for an Audi 2.7T Bi-Pipe Alternative?
Owners searching for discontinued or unavailable Audi 2.7T Bi-Pipe solutions, including the previously available ECS-style Bi-Pipe kit, can use this XS-POWER one-piece aluminum Bi-Pipe as another option for upgrading the B5 S4, B5 RS4, C5 A6 and C5 Allroad 2.7T charge-air system.
Note: XS-POWER is not affiliated with ECS Tuning. References to other products or brands are provided only to help customers identify the type of 2.7T Bi-Pipe component they are searching for.
What's Included
- 1 x XS-POWER one-piece cast aluminum Audi 2.7T Bi-Pipe assembly
- Components shown in the product photographs
O-RINGS ARE NOT INCLUDED. Required circular O-rings/seals must be sourced separately.
DIVERTER VALVES ARE NOT INCLUDED. Diverter valves are available separately. Please purchase based on your vehicle and performance requirements.
Installation Information
Professional installation is recommended. Verify all charge-pipe connections, throttle body sealing surfaces, O-rings, clamps, vacuum lines and diverter valve connections during installation.
Modified vehicles may require additional adjustment or supporting components. Pressure-test the complete intake/charge system after installation to verify that all connections are properly sealed before operating the vehicle under full boost.
Audi B5 S4 2.7T Bi-Pipe and Throttle Body Boot Upgrade
Whether you are restoring a B5 S4, upgrading a Stage 2 or Stage 3 Audi 2.7T, installing K04-style turbochargers, or simply replacing aging factory charge-air components, the XS-POWER aluminum Bi-Pipe provides a durable one-piece alternative to the original throttle body Y-boot configuration.
Popular searches for this product include Audi B5 S4 Bi-Pipe, Audi 2.7T BiPipe, 2.7T throttle body boot delete, B5 S4 Y-boot replacement, Audi S4 aluminum Bi-Pipe, Audi RS4 Bi-Pipe, C5 A6 2.7T Bi-Pipe, Audi Allroad 2.7T Bi-Pipe, 2.7T charge pipe upgrade, Stage 3 B5 S4 intake piping and Audi 2.7 twin turbo Bi-Pipe.
Frequently Asked Questions
Does this replace the Audi 2.7T throttle body Y-boot?
Yes. The one-piece Bi-Pipe is designed to eliminate the troublesome factory-style throttle body Y-boot arrangement.
Will this fit a 2000-2002 Audi B5 S4 2.7T?
Yes. The B5 S4 2.7T is one of the primary applications for this Bi-Pipe.
Will it fit the Audi C5 A6 and Allroad 2.7T?
It is listed for 2000-2004 Audi A6 C5 2.7T and 2000-2005 Audi Allroad C5 2.7T applications.
Are diverter valves included?
No. Diverter valves are not included and are available separately.
Are the O-rings included?
No. The required circular O-rings/seals are not included and must be sourced separately.
Is this suitable for upgraded turbo applications?
The one-piece aluminum design makes this a popular type of upgrade for modified 2.7T applications. Always confirm compatibility with the specific turbo, intercooler piping and engine configuration being used.
XS-POWER Audi 2.7T Performance
One-piece cast aluminum construction. Y-boot elimination. Enlarged recirculation valve ports. Built for Audi B5 S4, B5 RS4, C5 A6 and C5 Allroad 2.7T enthusiasts.
