2004-05 Mazda Miata / 1993-98 Toyota Supra Go Fast Bits RESPONS TMS Blow Off Valve Kit by Go Fast Bits (T9020)

Go Fast Bits

Give us a call to get the best prices and parts for your build. Or, just call us with a cool racing story...either way we're here.

Email - sales@maperformance.com

Phone 1-888-627-3736

Fits Your:
FREE Delivery Expected by , when ordered within hrs and mins
Phone  Contact us for availability!
$298.80 $332.00Instant Savings of 10% ($33.20)

Earn  $5.98 In MAP Rewards!

GFB Blow Off Valve - Respons:

As the name suggests, 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 commonly associated with atmo-venting valves on cars with MAF sensors.

Available in a range of universal hose-mount or direct bolt-on configurations for many popular models.


2004-2005 Mazda Miata

This product will also fit a 1993-1998 Toyota Supra (2JZGTE) but it is not direct bolt-on and will require modification to OEM hose


  • Advanced TMS benefits
  • Spring pre-load adjustment for max. response
  • Available as universal or direct-fit kit

Venting configurations:

  • Full progressive bias adjustment from recirc (silent) to atmosphere (loud)
  • Bias adjustment done manually via cap ring
  • C an be locked off in full recirc mode for legality purposes

Best choice for:

Quick and easy venting bias adjustment

A chieving noise on a car that is sensitive to atmosphere venting e.g. VAG applications

Customer Reviews

No reviews yet