Introducing the GFB Respons TMS: Smarter Than Your Average Dual Port BOV!

Does your atmosphere venting BOV just not cut it? Say hello to the GFB Respons! You might be pleasantly surprised by what it can do for your ride.

More Than Just Another Dual-Port BOV

At first glance, the Respons might seem like just another dual-port blow-off valve. But trust us, it’s so much more! With GFB's patented venting bias adjustment system, you can control exactly how much air vents from each of the two outlets.

Why is This Control Essential?

• Adjust the blow-off sound to your liking! You can recirculate all the air for a quiet factory feel, vent it all to atmosphere for that loud pop, or find the perfect balance somewhere in between.
• Enjoy that blow-off sound without the worries of stalling, backfiring, or any other BOV-related issues—especially if you have a sensitive airflow meter (MAF).

But Wait, There’s More!

The Respons isn’t just about making noise; it also:

• Improves throttle response
• Ensures faster boost recovery when shifting gears
• Holds unlimited boost pressure!

For instance, thanks to GFB's Turbo Management System (TMS) principle, tests have shown that the Respons can bring your engine back to peak boost up to 30% faster than a factory diverter valve during gear shifts. Check out the details below!

How Does GFB's Patented Venting Bias Adjustment Work?

Simply twist the adjusting ring to open the atmosphere port while simultaneously closing the recirculation port. This nifty feature allows for venting ratios that range from 100% recirc to 100% atmosphere, and everything in between!

Universal and Direct Bolt-On Kits Available

When we say "bolt-on," we mean it! Everything you need is included, and it fits right into the factory location without any modifications required.

Performance and Sound Without Compromise!

• Control the volume of your blow-off sound
• Experience up to 30% faster boost recovery when shifting gears
• Enjoy the blow-off sound without the hassle—even on sensitive MAF-based systems
• Hold unlimited boost pressure
• Choose from direct bolt-on kits

Fitment:

• Subaru WRX | STI 02-10