The GFB DV+ T9396 is a complete replacement diverter valve for MultiAir turbo engines whose factory valve cannot be taken apart, built around a low profile integrated solenoid and supplied with a plug and play adaptor loom so the factory ECU keeps control of when it vents. GFB measured the OEM valve leaking 28 L/min at 1 bar of boost, the largest OEM diverter leak the company has recorded; the DV+ holds pressure to 50 psi on a metal piston with a Viton face seal running in a piston seat machined into the valve body. Patented pilot actuation decouples the piston from the solenoid so the valve opens and closes progressively, which sharpens throttle response and speeds boost recovery after a lift or a gearshift. It recirculates rather than venting to atmosphere, so it stays quiet and keeps metered air in the intake tract.
| Type | Complete replacement diverter valve with integrated solenoid (GFB DV+) |
| Venting | Recirculating; retains factory ECU control through a plug and play adaptor loom |
| Material | Metal valve body with integral machined piston seat, metal piston with Viton face seal |
| Actuation | Patented pilot actuation; progressive opening and closing |
| Boost Holding | Holds pressure to 50 psi |
| OEM Leak Measured | 28 L/min at 1 bar of boost |
| Included | Valve assembly, plug and play adaptor loom, coarse thread screw set for plastic flanges (4 Nm), 6 mm metric screw set for metal flanges (6 to 8 Nm) |
| Quantity | 1 valve |
| Part Number | T9396 |
| Warranty | GFB Lifetime Warranty against defective materials and workmanship, original owner |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2009-2018 | Alfa Romeo | MiTo | 1.4 MultiAir |
| 2010-2020 | Alfa Romeo | Giulietta | 1.4 TB MultiAir |
| 2015-2026 | Alfa Romeo | Giulia | 2.0 MultiAir |
| 2016-2026 | Alfa Romeo | Stelvio | 2.0 MultiAir |
| 2016-2026 | Fiat | 124 Spider | Abarth |
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