GFB DV+ T9355 Diverter valve VAG 1.4 TSI

Many vehicle manufacturers use an electrically controlled original valve, which is all too often already defective or leaking at the factory.

This causes a loss of performance, which is even more pronounced in performance-enhanced vehicles due to the higher boost pressure.

Here GFB extends the DV+ series with a plug 'n play solution: The robust, anodised and CNC-milled aluminium housing of the GFB DV+ boost air valve closes this "hole" in the charge air system and the vehicle has noticeably more power and torque. The mode of action has been demonstrably tested by GFB in several performance measurements on the test bench!

Since the GFB DV+ only replaces the original valve and the original control unit (the solenoid valve unit) is still used, it integrates perfectly.

GFB's DV+, on the other hand, responds much better, is cheaper, easier to install and causes no "surging" or flutter. Furthermore, it does not require different springs to be adjusted to the respective boost pressure, nor does it require regular maintenance. In addition, it can withstand any boost pressure.

The secret here is that the piston seals through the applied boost pressure itself and not with the help of the spring. Through small openings on the piston's guide housing, the pressure flows backwards into the valve unit and pushes the piston downwards by the boost pressure's own force, which presses the piston with the rubberised underside against the stop and thus leads to the system sealing under load. The so-called "pliot" (called "solenoid plunger" in the illustration below) now seals the "pressure chamber" of the piston airtight, so that there is now pressure on a larger surface inside the piston chamber than from below on the rubberised underside. As soon as a load change now occurs (e.g. during gear shifting), the actuation unit lifts the pliot and the pressure can escape from the piston chamber, causing the piston to lift and discharge the excess pressure from the charge air system.

Advantages:
- 100% tight even at high charge pressures (faultless up to 2.5 bar)
- Noticeably more power and torque
- Made of aluminium (housing) or brass (piston): more reliability and durability for performance-enhanced vehicle
- Faster boost pressure build-up compared to an original diverter valve
- Plug & Play: easy installation within 10-15 minutes, as the original control unit is retained