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GFB RESPONS TMS Dual Outlet Blow Off Valve Subaru WRX B4 Legacy / Forester ~SPR
$398.99 per item

This listing closed and did not sell. The item has been relisted.

Closes: Thu 4 Nov, 03:56 pm | Location icon Seller located in Palmerston North, Manawatu ·3 views

GFB RESPONS TMS Dual Outlet Blow Off Valve Subaru WRX B4 Legacy / Forester ~SPR


Welcome To SPR Parts SPR Parts Is a authorised GFB Dealer

GFB RESPONS TMS Dual Outlet Blow Off Valve Subaru WRX / B4 Legacy / Subaru Forester


On the surface, it may look like just another dual-port blow-off valve, but the Respons is actually much more than that. Featuring GFB’s patented venting bias adjustment system, the Respons allows you to precisely control how much air vents from each of the two outlets.

Why is this so important? Two key reasons:

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
  • Adjust the volume of your blow-off sound
  • Up to 30% faster boost recovery on gearshift Get the blow off sound without the hassles - even on sensitive MAF-based systems
  • Direct bolt-on kits

For example, using GFB’s TMS (Turbo Management System) principle, tests show that the Respons can return the engine to peak boost up to 30% faster than a factory diverter valve when shifting gears (more information below)

Suits The Following Bellow

  • SUBARU STi MY03-07
  • SUBARU STi MY02 (Aka "Bugeye")
  • SUBARU STi MY03-07
  • SUBARU WRX MY01-02 (Aka "Bugeye")
  • SUBARU STi MY08-13
  • SUBARU WRX MY03-05 (Aka "Peanut Eye")
  • SUBARU WRX MY06-07 (Aka "Hawkeye")
  • SUBARU STi MY03-07
  • SUBARU XT MY05-08 (Series II) Vehicle Models Prior To 03/06 Require T9000, Please Contact Us For Confirmation
  • SUBARU WRX MY01-02 (Aka "Bugeye")
  • SUBARU STi 2014-On (EJ25 Engine)

Please check out our other PERFORMANCE Parts. SPR Parts

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Asking price

Shipping options

Destination & description Price
Via Overnight Courier $10.00
Via Courier RURAL $15.50
Shipping more than one item No extra charge
Pick-up available from Palmerston North, Manawatu Free

Payment options

Seller accepts
Ping, Cash, Afterpay, NZ Bank Deposit


99.1% positive feedback
address verified in trade top seller
Palmerston North
Member since
Saturday, 4 February 2012
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