The GFB Respons is designed specifically with the aim of improving throttle response and reducing turbo lag. What’s TMS? GFB’s 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 Respons also packs GFB’s patented adjustable venting bias system found on the Stealth FX. This unique system allows the amount of air vented to either recirc 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 Respons can deliver! By fine-tuning the venting ratio, you CAN achieve a blow-off sound WITHOUT throwing a CEL, running rich, stalling, using more fuel or causing any other problems sometimes associated with atmoventing valves on cars with MAFsensors.
Available in a range of universal hose-mount or direct bolt-on configurations for many popular models:
*Subaru WRX/STi MY97-98
*Subaru WRX MY01-07
*Subaru WRX/STI MY01-MY03 + 2015 STI
*STi MY02-on *Forester XT MY05-07
*Subaru WRX/STi MY99-00
*Forester GT/XT MY98-04
*Legacy B4
*Subaru WRX MY08-on
*Forester XT MY08-on
*Legacy GT MY03-09
*Nissan Skyline GTS-T/GT-T R32-34
*Mazda 3/6 MPS, CX-7
*Nissan GTR R35 (2 valves needed)
*Nissan Silvia/200SX S14-15
*VW/Audi – all 1.8t models
*Ford Falcon XR6 turbo BA-BF
*Mitsubishi EVO I-X

PACEMAKER exhaust system - Holden Commodore VE incl HSV LS2 and LS3
Wastegate dump pipe (screamer pipe) 50mm
Hybrid GT2 spec intercooler kit - Toyota Hilux gen 8
GFB EX38 38mm V-band wastegate
Turbo oil return fitting kit TD04 TD05 TD06 Kinugawa onepiece
Kinugawa Japan TD05HR-20g EVO4-9 - BALL BEARING + BILLET
BC Camshafts VQ35 stage 2 / 3
DPR adjustable rear toe control and camber arms Nissan 350Z
Hybrid GT2 spec intercooler kit - Legacy BL5 GT B4
Turbo oil and water line install kit TD42 (GU) Kinugawa TD05 / TD06
RAGE exhaust system - Ford Falcon BA BF XR6 turbo
BC Camshafts B18a B18b stage 2 / 2+ / 3
4G63 Turbo dump pipe EVO 7-9 Kinugawa
Toyota 1JZGTE manifold T3 single turbo conversion
Hybrid X01-R intercooler kit - Mazda 3 MPS Gen 2
Hybrid GT2 spec intercooler kit - WRX (GRF)
Hybrid GT2 spec intercooler kit - S13 CA18
BC Camshafts 1JZGTE stage 2 / 3
Hybrid GT2-S intercooler kit - Falcon FG XR6
PACE MAKER exhaust system - Ford Falcon BA BF XR6 turbo
Toyota 4EFTE Starlet manifold and dump pipe set (suit TD04/TD05 turbo)
Magnaflow exhaust system - Ford Mustang V8 5L
Delta fin Intercooler - 550x230x65
Hybrid GT2 spec intercooler kit - Toyota Hilux gen 7
Bellmouth 3" neck (turbo air intake)
Hybrid GT2 spec intercooler kit - Mazda 6 MPS
Hybrid GT2 spec intercooler kit - WRX (GD V10)
BC Camshafts 7MGTE stage 2 / 3
Hybrid GT2 spec intercooler kit - Mazda 3 MPS Gen 1
Tial 46mm wastegate (coloured top) WITH FLANGES
D1 Spec weighted shift knob rod style (black chrome)
Hybrid X01-R intercooler kit - Toyota Starlet
Stainless Steel T-bolt clamp (to suit 1.50" hose)
Turbo beanie DPR heatshield blanket - Titanium Series (Subaru)
Downpipe RAGE - Subaru WRX 1994-2000 3"
Hybrid X01-R intercooler kit - SF5 Forester
Tial 50mm BOV Q (high flow)
BC Camshafts 4G63 EVO 9 stage 2 / 3 / 4
SSQV flange for EJ20 / EJ25 (type 3) Subaru - bolt on WRX 2008-2014 