GFB - RESPONS TMS - Dual Port BOV (STi 01-21) - Black

In the rangePart no. T9003

Does it fit?

Colour: Black
Boost recovery: Up to 30% faster than factory valve
Requires: Standard intercooler (check fitment with aftermarket)
Fits: GD Impreza WRX / STI (2000–2007), GG Impreza WRX wagon (2000–2007) + 2 more
Category: Engine & forced induction

Want this, or something like it?

We can’t take an order yet — supply is still being arranged. Ask, and we will tell you what we know about it and let you know when it is available. What people ask for is what we range first.

Fitment is confirmed, not guessed
A chassis is listed only where the part is on one of our cars or on the manufacturer’s own application list.
Some of this is on our cars
Parts marked On our cars are ones we race. Those descriptions are written from running them, not from a brochure.
A person answers
Enquiries go to Michael, who races the cars. Tell us the car and what you are trying to fix.

Not a shop yet — no prices and no checkout. How this catalogue works

Specifications

Brand: GFB
Part number: T9003
Colour: Black
Boost recovery: Up to 30% faster than factory valve
Requires: Standard intercooler (check fitment with aftermarket)
Fits: GD Impreza WRX / STI (2000–2007), GG Impreza WRX wagon (2000–2007), GR-GV Impreza WRX STI (2008–2014), VA WRX / STI (2014–2021)
Category: Engine & forced induction

Figures as published for this part; fitment is only what we have confirmed. Check critical dimensions against your car before ordering.

About this part

GFB's Respons TMS dual-port blow-off valve (T9003) is the black-finish unit covering the STi from 2001 to 2021, and requires the standard intercooler unless an aftermarket one is confirmed to fit. The dual-port design lets the adjusting ring bias boost from fully recirculated to fully atmospheric, which is what stops a MAF-metered car stalling or backfiring after a lift.