Upgrade your factory boost system with the CTS Turbo Blow Off Valve Kit for the Volkswagen MK7 GTI, Golf R and Audi 8V S3. The CTS Turbo BOV was engineered to improve reliability, throttle response, and atmospheric blow-off sound.
The factory diverter valve system is designed for quiet operation and can become a failure point on tuned or higher-boost applications. This CTS Turbo BOV replaces the factory plastic assembly with a billet piston-style blow off valve designed for improved durability, faster boost response, and aggressive sound under throttle lift.
Quick Fitment Overview
Compatible with Volkswagen MK7/MK7.5 GTI, Golf R and Audi 8V/8V.5 S3
Atmospheric blow off valve kit with billet piston design
Improves boost response and long-term reliability
Plug-and-play installation using factory electronics
Product Description
The CTS Turbo Blow Off Valve Kit for the Volkswagen MK7 GTI, Golf R and Audi 8V S3 is engineered to deliver more reliable boost control and sharper valve response compared to the factory diverter valve system. Designed for both stock and tuned MQB vehicles, this billet aluminum BOV uses a fully serviceable piston-style design capable of handling increased boost pressure while maintaining factory electronic integration.
Unlike the factory diaphragm-style valve, the piston-style construction improves durability under aggressive driving and higher boost levels. The result is improved boost consistency, quicker valve operation, and the signature atmospheric blow-off sound enthusiasts expect from a performance turbocharged setup.
Key Features and Benefits
T6061 billet aluminum construction
Black anodized stealth finish for corrosion resistance
Fully serviceable piston-style blow off valve design
Compatible with factory electronics and sensors
No additional wiring or extensions required
Improves reliability compared to factory plastic valve assemblies
Compact design allows fitment in tight engine bays
Improves boost response and throttle reaction
Produces aggressive atmospheric blow-off sound
Vehicle Compatibility
Audi 8V/8V.5 S3 (2015–2020)
Volkswagen MK7/MK7.5 GTI (2015–2021)
Volkswagen MK7/MK7.5 Golf R (2015–2019)
Installation and Notes
Direct plug-and-play installation
Professional installation recommended
No tuning required for installation
Ensure all boost connections are properly secured
Compatible with factory electronic controls
Recommended Upgrades
High-flow air intake system
Turbo inlet pipe
Performance intercooler
Turbo muffler delete
Frequently Asked Questions
Q: What is the difference between a blow off valve and diverter valve? A: A blow off valve vents boost pressure to atmosphere, producing a louder discharge sound, while a diverter valve recirculates boost back into the intake system.
Q: Does this require tuning? A: No. This kit is designed to work with the factory electronics without requiring additional tuning.
Q: Will this increase turbo sound? A: Yes. This atmospheric BOV produces a significantly more aggressive blow-off sound during throttle lift.
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