Blow off Valve Diverter for Audi S3 (2006-2013) 2.0L

Direct-Fit Atmospheric Blow-Off Valve Diverter for 2006-2013 Audi S3

What it Does: The Blow Off Valve Diverter replaces failure-prone factory diverter internals on the 2006-2013 Audi S3 to eliminate boost leaks and accelerate post-shift boost recovery.

The Stock Audi S3 Diverter Valve Diaphragm Failure

Factory diverter valves fitted to the EA113 2.0T FSI engine rely on a fragile rubber diaphragm or weak plastic piston that commonly tears under standard operating thermal cycles and elevated manifold pressures. Under continuous load, heat soak degrades the synthetic elastomeric seal, resulting in silent boost bleed, sluggish spool between upshifts, and reduced peak volumetric efficiency at higher engine speeds.

The Engineering Solution

Engineered as a direct sandwich-style upgrade for the Audi 8P platform, this assembly integrates a CNC-machined, black-anodized billet aluminum valve body with high-durometer fluoroelastomer (FKM) O-rings. Featuring a precision-machined brass internal plunger and a calibrated stainless steel return spring, the valve retains the factory electric solenoid for millisecond-fast actuation while preventing boost-induced piston deflection. Dual venting ports direct surplus charge pressure into the atmosphere, delivering crisp acoustic venting without causing rich AFR stumbles or triggering charge-pressure deviation fault codes.

Technical Specifications

Compatibility

• 2006-2013 Audi S3 3-Door Hatchback 2.0L TFSI (8P)
• 2008-2013 Audi S3 5-Door Sportback 2.0L TFSI (8PA)

Frequently Asked Questions

Does this fit the 8P S3?
Yes, this is a direct fit for the 2006-2013 Audi S3 equipped with the EA113 2.0T FSI engine and factory BorgWarner K04 turbocharger assembly.

Will running this atmospheric diverter trigger a Check Engine Light?
No, because the OEM solenoid circuit and wiring harness remain intact, factory ECU boost targets and diagnostic parameters are maintained without triggering a CEL.

The Audi Engineering Standard

Constructed specifically to meet the high thermal and mechanical standards of European forced-induction drivetrains, this billet valve maintains airtight boost delivery under load while integrating flawlessly with factory Bosch MED9 engine management.