GFB RESPONS BOV ADJUSTABLE VENTING SUBARU WRX / STi 2001 On

Genuine GFB Go Fast Bits T9003

Adjust how loud the blow-off sound is. Recirculate all of the air for silent factory operation, vent it all to atmosphere for maximum noise, or set it ANYWHERE in between to suit your preference. Get a blow-off sound WITHOUT causing stalling, backfiring, or any other BOV-related issues, even on a car with a sensitive airflow meter (MAF). Hold on, it gets better. The Respons isn’t just a noise-maker. It also;

Offers better throttle response Faster boost recovery on gearshift Unlimited boost-holding! tms-respons-diagram

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