Description
Improve airflow and strengthen the pressurized intake tract of your Audi B9/B9.5 S4 or S5 3.0T EA839 with the Untd. Performance Post-Throttle Valve Charge Pipe Kit. Designed to replace the factory post-throttle piping, this upgrade provides a smoother-flowing and more robust path for charge air between the throttle valve and intake system.
The OEM plastic charge pipes are designed for factory power levels, but they can become a weak point as boost pressure and airflow increase on tuned and higher-power EA839 applications. The Untd. Performance charge pipe kit replaces these factory components with a stronger performance-oriented solution designed to withstand the demands of increased boost while improving airflow characteristics.
The kit features mandrel-bent tubing, optimized flow geometry, a durable wrinkle-black powder-coated finish, and a direct bolt-on design. It is an ideal supporting upgrade for vehicles equipped with ECU tuning, upgraded turbochargers, intercoolers, turbo inlets, and other airflow modifications.
Key Features
- Upgraded Replacement for OEM Plastic Pipes:
Replaces the factory plastic post-throttle piping with a more robust aftermarket solution. The OEM plastic components can become a potential weak point as boost pressure and airflow increase on tuned EA839 engines. - High-Flow Post-Throttle Valve Design:
Provides a larger, freer-flowing path through the pressurized intake system, helping reduce restriction as airflow demand increases. - Stronger Construction for Higher Boost:
Designed as a more durable alternative to the factory plastic piping for applications running increased boost and higher power levels. - Optimized Flow Geometry:
Smooth, performance-oriented bends are designed to improve airflow through the charge system and minimize unnecessary turbulence. - Increased Airflow Capacity:
Provides additional airflow headroom for tuned EA839 engines and higher-output turbocharger combinations. - Mandrel-Bent Construction:
Maintains a consistent internal passage through bends for improved airflow characteristics. - Ideal for Tuned EA839 Builds:
Particularly beneficial when combined with ECU tuning, upgraded turbochargers, intercoolers, turbo inlets, and high-flow intake systems. - Direct Bolt-On Installation:
Designed around the factory mounting locations for a straightforward installation. - Wrinkle-Black Powder-Coated Finish:
Provides a clean appearance and durable protective coating suitable for the engine bay. - Installation Hardware Included:
Includes the necessary hardware for installation.
Estimated Performance Gain
The post-throttle valve charge pipes are primarily a supporting airflow and reliability upgrade. They do not independently increase boost, so horsepower gains on a completely stock vehicle are expected to be modest.
The larger benefit comes on tuned vehicles where increased boost places greater demands on the factory plastic charge piping. Improved flow capacity and stronger construction provide additional headroom for higher-output applications.
| Configuration | Estimated HP Gain | Estimated Torque Gain | Estimated Output |
|---|---|---|---|
| Stock Tune + Charge Pipes | ~0–3 HP | ~0–4 lb-ft | Near factory output |
| Stage 1 + Charge Pipes | ~3–8 HP | ~4–10 lb-ft | Dependent on calibration |
| Stage 2 / Higher-Boost + Charge Pipes | ~5–15 HP | ~7–18 lb-ft | Dependent on calibration |
| Upgraded Turbo + Supporting Mods | ~10–25+ HP* | ~10–30+ lb-ft* | Dependent on turbo & tune |
*Estimated contribution of improved charge-air flow. Actual gains depend heavily on turbocharger, ECU calibration, intercooler, intake, boost pressure, and overall system configuration.
Important: These figures are estimates and should not be interpreted as guaranteed horsepower produced solely by the charge pipes. The primary benefits are improved charge-air flow, increased airflow capacity, and stronger replacement piping for higher-boost applications.
Why Upgrade?
The factory EA839 post-throttle piping is constructed from plastic and designed around OEM boost levels and power output. As boost pressure increases through ECU tuning and turbocharger upgrades, the factory plastic components become a more significant concern for enthusiasts looking to build a reliable higher-power setup.
The Untd. Performance Post-Throttle Valve Charge Pipe Kit provides a stronger alternative while also improving the flow path through the charge-air system.
Replacing the OEM plastic piping is particularly worthwhile when increasing boost, upgrading the turbocharger, or building a higher-output EA839. The additional strength and airflow capacity help provide greater confidence in the charge-air system as power levels increase.
Compatibility
Designed for Audi EA839 3.0T applications including:
- Audi S4 B9 3.0T
- Audi S4 B9.5 3.0T
- Audi S5 B9 3.0T
- Audi S5 B9.5 3.0T
Please verify your exact model year, engine configuration, and existing charge-air components before ordering.
Installation & Tuning
- Direct bolt-on installation
- No ECU tune required
- Compatible with factory ECU calibration
- Recommended for tuned and higher-boost applications
- Works well with upgraded intercoolers, turbo inlets, and intake systems
- Installation hardware included
- Professional installation recommended
⚠️ Important Notice
- Horsepower and torque figures are estimated and not guaranteed.
- Standalone horsepower gains on a stock vehicle are expected to be modest.
- The primary benefits are stronger charge piping, improved airflow, and increased boost-handling capability.
- Actual results vary depending on turbocharger, boost pressure, intercooler, intake, fuel, ECU calibration, and vehicle condition.
- Verify exact fitment before installation.
Reviews
There are no reviews yet.