VAG 1.8T Dual Port Aluminum BOV Valve, 25mm Splitter Dump
Upgrade your VAG 1.8T with a rugged 25mm Billet Aluminum Dual Port BOV Valve—the splitter dump that delivers precise control over pressure, response, and sound. Machined from billet aluminum, this valve replaces the factory plastic unit to provide robust durability and consistent performance. The dual-port design lets you dump charge air back into the intake (recirculation) while optionally venting some to the atmosphere for the unmistakable turbo whoosh. Tuning is made simple with an adjustable preload on the top piece, so you can tailor throttle response and boost stability to match your driving style and engine setup. Removable ports allow configuration for Dual Port (50/50 Atmosphere/Recirculation), Full Atmospheric, or Full Recirculation, putting you in command of how your system behaves in real-world driving. This valve is designed for 25mm VAG 1.8T engines (including the 2.7 Bi-Turbo) and many other vehicles, offering a reliable upgrade over the stock diverter unit while maintaining boost reliability.
Benefits & Tips
- Enhanced throttle response and more predictable boost thanks to adjustable preload and a sturdy billet aluminum build.
- Choose your sound and efficiency: Dual Port for a balanced feel, Full Atmospheric for maximum sound, or Full Recirculation to protect the MAF sensor while preserving drivability.
- Easy tuning to your setup: remove or reconfigure ports as needed to harmonize with your turbo, fueling, and driving style.
Product specifications
- Port size: 25mm
- Material: Billet aluminum
- Configuration: Dual Port with removable ports (50/50 Atmosphere/Recirculation, Full Atmospheric, Full Recirculation)
- Top piece: Adjustable preload for tuning throttle response and boost stability
- Compatibility: Fits 25mm VAG 1.8T engines and 2.7 Bi-Turbo, plus many other vehicles
- Function: Replacement for standard plastic Bosch diverter unit; fully serviceable
- Origin: Mainland China
- Includes: Replaces the stock diverter with a durable billet aluminum solution
Package includes
- 1x Blow Off Valve
- 1x Blind cap
- 2x Hose Clamps
- 2x Hose
- 2x Hose Fittings
Warnings/Reminders
- Professional installation is recommended to ensure proper fitment and tuning for your specific vehicle.
- Verify compatibility with your engine configuration (25mm VAG 1.8T / 2.7 Bi-Turbo) before installation.
All electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty.
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