Go Fast Bits TMS Response Hybrid Blow Off Valve 2002-2007 WRX / 2004-2021 STI

Description:
GFB Response TMS valve (part number T9003) features both the GFB patented adjustable bias venting system, and the GFB TMS advantage. The TMS range from GFB is designed specifically for the purpose of turbo lag reduction and improving throttle response. Tests show TMS features can help return the engine to peak boost up to 30% faster than a factory diverter valve when shifting gears. Want sound? Admit it, you do - otherwise you would not be looking at this product! Even if you only want to hear it a little bit, only some of the time, or hide it from your better half, GFB's unique patented venting bias adjustment system has you covered - it allows the amount of air vented to atmosphere or recirculating to be infinitely varied to change the sound from silent to ear-shattering or anywhere in between, with a simple flick of the wrist!

Features:
- Unique adjustment to easily change distribution of vented air between recirculating and atmosphere ports.
- Great for cars with sensitive air flow meters as it can be tuned to vent just enough air back to the inlet to prevent backfiring, whilst achieving a blow-off sound.
- Direct bolt-on fitment NO extra parts, adapters, or modifications to the car required just take the factory valve off, and put the GFB Response TMS in its place!
- Excellent value!
- Includes replacement BOV Gasket

More About Response TMS
What Is TMS? GFB Turbo Management System is the term we apply to our diverter valves that have features designed specifically for the purpose of turbo lag reduction.
Tests show that TMS features can return the engine to peak boost up to 30% faster than a factory diverter valve when shifting gears*
On top of the TMS benefits, the Response also packs GFB patented adjustable venting bias system found on the Stealth FX.
Response TMS can increase your boost by 30% during throttle modulation. This unique system allows the amount of air vented to either recirculating or atmosphere to be infinitely varied to change the venting sound like a stereo volume dial!
So if you want noise with your performance, the Response can deliver! By fine-tuning the venting ratio, you CAN achieve a blow-off sound WITHOUT throwing a CEL (check engine light), running rich, stalling, using more fuel or causing any other problems commonly associated with atmosphere-venting valves on cars with MAF sensors.

Applications:
2002-2007 WRX
2004-2007 STI
2008-2014 STI
2015-2021 STI
2006-2008 Forester