Product images and videos are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Air and Fuel› Superchargers, Turbochargers and Components
Go Fast Bits
GFB 94-02 Nissan Silvia S14/S15 TMS Respons Blow Off Valve Kit
SKU: G004 T9004
Moderate — 2–4 hours
Overview
This system enables adjustable sound levels, from fully recirculating for silent operation to fully atmospheric for maximum noise, or anywhere in between.
Show original supplier description
Part #: T9004
If cars like yours typically suffer issues such as backfiring and stalling when using a fixed-ratio atmosphere-venting BOV, the Respons can help. By adjusting the venting bias to suit the car you can achieve a blow-off sound without having to put up with the issues. Like all GFB valves, the Respons utilises GFB's proven TMS Technology to ensure rapid boost recovery on gearshift and optimum throttle response, as well as the ability to withstand boost pressures of 100psi+. Put simply, it can hold more boost than any turbo could produce.
GFB's Respons, allowing you to infinitely vary how much air is recirculated or vented to atmosphere. Simply by twisting the adjustment ring, you can change the sound of your BOV from silent to ear-shattering!?.
Vehicle Symptoms
- Boost pressure drops under hard acceleration
- Fluttering or compressor surge on throttle lift
- Stalling or rough idle after quick gearshift
- Backfiring or popping on deceleration
- No audible blow-off sound from factory valve
Diagnostic Codes
- P0171 – System too lean (Bank 1)
- P0174 – System too lean (Bank 2)
- P0300 – Random/multiple cylinder misfire
Relevant Conversations
- GFB T9004 Respons TMS diverter valve install guide
- blow off valve vs diverter valve which is better
- GFB Respons T9004 vs Turbosmart Kompact EM
- P0171 after installing atmospheric blow off valve fix
- diverter valve stuck open symptoms boost leak
- GFB T9004 venting bias adjustment how to set sound
- will GFB Respons cause stalling on my tuned car
- best diverter valve for Subaru WRX GFB T9004
- GFB Respons TMS T9004 compatible with stock tune
- compressor surge flutter fix GFB diverter valve
Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | Go Fast Bits |
| Part Number | G004 T9004 |
About MOTORMIA
Buy with Confidence
Returns & Fitment
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
View Full Return PolicyShipping
Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.
Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.
View Full Shipping Policy