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Go Fast Bits Respons Blow Off Valve for 02-07 WRX / 04+ STI / 06-08 FXT - T9003

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Product Description

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.

* 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

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Product Reviews

  1. GFB Hybrid Bypass Valve 4 Star Review

    Posted by on 26th Aug 2014

    Fits good on the 2014 sti, I've seen a few models have backfiring issues with 100% atmospheric. I'm played with all the settings at my disposal and it looks like no issues so far that I can see. Good buy.

  2. go fast bits bov 5 Star Review

    Posted by on 21st Aug 2014

    Great product an very fast shipping!!! Item as described an not a knock off brand like ebay. Will buy more products from this company

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