GFB Deceptor Pro Blow Off Valve Kit 2002- 2007 WRX / 2004-2021 STI GEN_2015 STI

GFB Deceptor Pro Blow Off Valve Kit 2002- 2007 WRX / 2004-2021 STI GEN_2015 STIControl the sound of your BOV "ON THE FLY." Go on, admit it. There are times you wish you could have that signature turbo blow off sound, but you're not prepared to listen to it all the time. GFB's Deceptor Pro II delivers just what you need ? the ability to control how loud your BOV sound is, from the driver's seat. To top it off, if your car typically suffers issues such as backfiring and stalling when venting more than a certain percentage of air

Massive 52% increase in cross sectional area over OEM in some locations

offering robust reliability for both street and track use

In order to create a true 3-inch cat-back

torque and improved throttle response

Meaning this system connects all the way up to the primary down-pipe making this a true 3-inch exhaust system

These are made ready to install that comes with provided with top hats

but the stock cooling system just can't keep up

and protect drivers behind you

and it delivers in all aspects of performance and weight savings for the most discriminatory of enthusiasts

a new 3" 2-bolt flange gasket

High Flow Digressive Piston to optimize the perfect balance between performance and comfort along with the ability to upgrade and rebuild

Progressive spring rate