Blow off Valve Diverter for Audi TTS (2006-2014) 2.0L

Billet Pressure-Sealing Blow off Valve Diverter for 2006-2014 Audi TTS

What it Does: The Blow Off Valve Diverter replaces the leak-prone factory pressure-relief unit on the 2006-2014 Audi TTS to prevent boost leaks and deliver crisp atmospheric discharge during throttle lift-off.

The Stock Audi TTS Diverter Valve Vulnerability

The OEM diverter valve on the 8J generation Audi TTS (powered by the transverse EA113 2.0L TFSI engine with a BorgWarner K04 turbocharger) relies on an electronic solenoid utilizing a fragile rubber diaphragm or an unsealed plastic piston. Under sustained heat cycling and higher manifold pressures, factory diaphragms rupture, resulting in lazy boost onset, partial throttle flutter, and recurrent P0299 underboost fault codes. Furthermore, factory plastic sliders suffer from thermal distortion, allowing pressurized intake air to bleed across the valve seat back into the turbo inlet under peak load.

The Engineering Solution

This hybrid diverter upgrade features a CNC-machined 6061-T6 billet aluminum housing finished in protective black anodizing to eliminate structural fatigue. Engineered to mount directly between the OEM solenoid base and the turbocharger compressor housing, it utilizes precision-ground brass internal pistons, chemical-resistant Viton O-rings, and an engineered spring rate. This layout vents excess charge pressure to atmosphere to generate an audible release while keeping the factory electronic control circuit intact. By maintaining a 100% pneumatic seal until commanded open, it minimizes boost recovery lag through shift transitions and eliminates compressor surge.

Technical Specifications

Compatibility

• 2006-2014 Audi TTS Base 2.0L TFSI Coupe (8J)
• 2006-2014 Audi TTS Base 2.0L TFSI Roadster (8J)

Frequently Asked Questions

Does this fit the 8J TTS?
Yes, this is a direct fit for the 2006-2014 Audi TTS equipped with the EA113 2.0L TFSI engine.

Will this valve throw a Check Engine Light (CEL)?
No, the assembly retains the OEM electronic solenoid harness connection, maintaining factory ECU diagnostics without triggering valve actuation trouble codes.

The Audi Precision Standard

Engineered to interface seamlessly with Bosch MED9 engine management, this billet diverter kit maintains exact boost parameters and ensures flawless valve seating under high thermal stress without upsetting sensitive air-mass metering.