The T9380 is the latest addition to the DV+ range of diverter valves from GFB (Go Fast Bits). It is specifically designed as a complete replacement for the newer generation of Continental brand OEM diverter valves found in late-model VW and Audi vehicles.

Unlike the earlier generation diverter valves manufactured by Pierburg, the newer Continental valves cannot be disassembled and integrated into a DV+. Therefore, GFB developed the T9380 with a low-profile integrated solenoid as a complete replacement for the Continental diverter valve, enabling a hassle-free installation with no clearance issues.

Like all valves in the DV+ range, the new T9380 delivers the following benefits over the OEM diverter valve:

T9380 DV+

Improved boost holding
Sharper throttle response
Faster boost recovery after a gearshift or brief throttle lift
Unrivalled longevity, backed by our Lifetime Warranty

Improved Boost Holding

Since electronic OEM diverter valves first appeared in the mid-2000s, there have been many revisions over the years in an attempt to address reliability issues. Whilst the latest generation of OEM diverter valves have become more reliable, there is always a performance trade-off due to their operational method and plastic construction.

When GFB engineers performed boost leak testing on the OEM diverter valve in a VW Mk8 Golf R, they found the leak was significantly larger than in earlier generations.

This excessive leaking is due to the emerging trend of manufacturers mounting diverter valves remotely on plastic piping rather than directly on the turbocharger. A plastic valve mechanism closing onto a plastic seat resulted in the largest OEM diverter valve leak we’ve seen yet at 28L/min at 1 Bar of boost.

Even with the Viton face seal (featured on all DV+ pistons), the plastic OEM seat face was found to be so uneven that it was impossible to achieve a reliable seal. The T9380 successfully addresses this issue by incorporating an integral piston seat machined into its body. This design ensures a proper seal, even on uneven plastic OEM seats.

Sharper throttle response, faster boost recovery after brief throttle lift

Factory electronic diverter valves are binary in operation – they’re either open or shut. Your throttle, however, isn’t. When you make small throttle adjustments, the binary operation of the factory diverter results in abrupt changes in power delivery, which is the very definition of poor throttle response.

The DV+ patented “pilot actuation” system allows the piston to open and close progressively, thereby smoothing the power delivery during throttle modulation, and ultimately improving throttle response.

Unrivalled longevity, backed by our Lifetime Warranty

The combination of precision manufacturing, attention to detail, and robust materials mean the DV+ will last a lifetime. So does the warranty!

FITS:

Make	Model	Mark	Variant	FuelType	YearFrom	YearTo
Audi	A4	B9 Avant	RS4 quattro	Petrol	2017	2024
Audi	A4	B9 Avant	S4 quattro	Petrol	2016	2019
Audi	A5	F5	RS5 quattro	Petrol	2017	2024
Audi	A5	F5	S5 quattro	Petrol	2017	2024
Audi	A5	F5	S5 quattro	Petrol	2016	2024
Audi	A5	F5	S5 quattro	Petrol	2016	2024
Audi	A6	C8 Avant	3.0 55 TFSI Mild Hybrid quattro	Hybrid	2018	2024
Audi	A6	C8	S6 TFSI Mild Hybrid quattro	Plug-In	2020	2024
Audi	A6	C8 Saloon / Limousine	3.0 55 TFSI Mild Hybrid quattro	Hybrid	2018	2024
Audi	A7	4KA	55 TFSI Mild Hybrid quattro	Petrol	2017	2024
Audi	A8	4N2,4N8,4NC,4NL	50 TFSI Mild Hybrid quattro	Plug-In	2018	2024
Audi	Q5		SQ5 TFSI quattro	Petrol	2021	2024
Audi	Q7	4MB	55 TFSI quattro	Plug-In	2021	2024
Audi	Q8	4MN	55 TFSI e quattro	Plug-In	2020	2024
Audi	Q8	4MN	55 TFSI Mild Hybrid quattro	Plug-In	2018	2024
Skoda	Octavia	MK4	2.0 TSI RS	Petrol	2020	2024
Volkswagen	Golf	MK8	2.0 GTI	Petrol	2020	2024
Volkswagen	Golf	MK8	2.0 GTI	Petrol	2020	2024
Volkswagen	Golf	MK8	2.0 GTI	Petrol	2021	2024
Volkswagen	Golf	MK8	2.0 GTI Clubsport	Petrol	2020	2024
Volkswagen	Golf	MK8	2.0 TSI R 4motion	Petrol	2020	2024

Audi Q8 Mods

Audi Q8 55 TDI Quattro From 2019 To 2024 Active Sound Control - Milltek Sport

Audi Q8 55 TDI Quattro From 2019 To 2024 Active Suspension Control - Milltek Sport

GFB DV+ T9380 Upgrade Diverter Valve - Audi Q8 (4M) 55TFSi