OFF-ROAD OR MOTORSPORTS USE ONLY. This part is not CARB legal. It is not legal for sale or use on pollution-controlled motor vehicles in California or in other states that follow California emissions rules. It is sold for off-road or motorsports use only.

This is the Go Fast Bits Diverter Valve DV+ Suits Ford / Volvo / Porsche / Borg Warner Turbos (Direct Replacement). Part gfbT9354. Blow-off and bypass valves vent boost pressure between shifts; wastegates control maximum boost.

GFB DV+ Diverter valve (Part number T9301) is a direct bolt on factory valve replacement. Designed to replace the weak plastic Bosch diverter valves commonly found on European applications like Audi, Ford and VW, but with the GFB TMS advantage.

The TMS range from GFB is designed specifically for the purpose of turbo lag reduction, and improving throttle response. Tests show TMS features can return engine to peak boost up to 30% faster than a factory diverter valve when shifting gears.

Unlike other aftermarket Bosch replacement valves on the market, the DV+ will hold as much boost as you can throw at it WITHOUT the need to adjust the spring pre-load or purchase different springs. This is because the pressure-balancing design of the DV+ means that under wide open throttle conditions there is equal boost pressure on both sides of the piston, so it will stay shut under boost REGARDLESS of the spring setting or the boost pressure.

These unique products are manufactured in Australia in accordance with ISO 9001 which ensures our products meet stringent quality requirements at all stages of manufacture.

Diverter valves, but with more!

GFB's DV+ range is designed as a direct bolt-on replacement solution for problematic factory recirculating diverter valves. Not only do DV+ valves eliminate failure issues from high temperature and boost pressure, they also offer the TMS advantage of improved throttle response and boost holding.

Features and benefits

10% FASTER OPENING, 50% FASTER CLOSING THAN THE FACTORY DIVERTER
RETAINS THE FACTORY SOLENOID FOR SEAMLESS INTEGRATION
REPLACES PLASTIC VALVE PARTS WITH METAL FOR RELIABILITY AND STRENGTH ON STOCK OR MODIFIED

Product details

Part type: Blow-Off Valves & Wastegates
Brand: Go Fast Bits
Add-On: Not Applicable
Adjustable: No
Grade Type: Performance
Valve Material: Stainless Steel
Go Fast Bits part number: gfbT9354

Fitment

Vehicle: Alfa Romeo 4C, Ford Focus ST, Porsche 911 (991), Porsche 911 (997)
Years and trims on file: 2015-2018 Alfa Romeo 4C Base; 2015 Alfa Romeo 4C Launch Edition; 2015-2020 Alfa Romeo 4C Spider; 2020 Alfa Romeo 4C Spider Italia; 2013-2018 Ford Focus ST; 2008-2009 Porsche 911 GT2; 2011 Porsche 911 GT2 RS; 2007-2009 Porsche 911 Turbo; 2010-2012 Porsche 911 Turbo; 2011-2012 Porsche 911 Turbo S
Application listing: Go Fast Bits Diverter Valve DV+ Suits Ford / Volvo / Porsche / Borg Warner Turbos (Direct Replacement)
Check the vehicle, model years, engine and trim above against your car before ordering. Not sure? Ask us and we will check it against your VIN.

Emissions: off-road or motorsports use only

This part is not CARB legal and is sold for off-road or motorsports use only. It is not intended for use on vehicles driven on public roads. By ordering, the buyer accepts responsibility for checking and following federal, state and local emissions laws where the vehicle is used. Questions? Ask us before you order.

Shipping & returns

Orders are processed within 1–3 business days; standard delivery is 3–7 business days within the United States.
Go Fast Bits parts are supplied through our distributor. We confirm availability and lead time with you after you order.
We currently ship within the U.S. only. See our Shipping Policy.
30-day returns on unused parts in original packaging — see our Return Policy.

Installation at Team ANBD

Team ANBD is a performance shop in Andover, New Jersey. We can align or corner-balance the car, and prep track cars. Book an appointment or ask us about installation and fitment before you order.

California Proposition 65

WARNING: This product can expose you to chemicals known to the State of California to cause cancer or reproductive harm. For more information go to www.P65Warnings.ca.gov.

Alfa Romeo 4C