This product is intended for racing use only, and it is the owner's responsibility to be aware of the legalities of
fitting this product in his or her state/territory regarding noise, emissions and vehicle modifications.
GFB products are engineered for best performance, however incorrect use or modification of factory systems
may cause damage to or reduce the longevity of the engine/drive-train components.
GFB recommends that only qualified motor engineers fit this product. Warranty is for the period of one year
from the date of purchase and is limited only to the repair or replacement of GFB products provided they are used
as intended and in accordance with all appropriate warnings and limitations. No other warranty is expressed or
implied.
Using the main spring
The DV+ can be configured in two different ways, depending on your desired outcome. Fitting the DV+
with the main spring installed as shown on the previous page can be thought of as a “Sport” mode,
offering the best possible throttle response and boost recovery during on/off throttle applications (i.e.
during gearshift with a manual transmission).
Using the main spring means the DV+ can open and close progressively in response to how much boost
pressure is present, unlike the factory diverter which just opens fully regardless of whether there is boost
to vent or not. Because this operation method is different from the factory diverter, it is not unusual (or
detrimental) to hear a different sound from the intake when lifting off the throttle at low RPM, especially
if you have an aftermarket intake or a larger turbo installed.
If a different sound does occur and bothers you, it is possible to install the DV+ WITHOUT the main spring
behind the piston. This configuration can be thought of as an improved “Standard” mode, which behaves
just like the factory diverter, but with the added benefits of better boost-holding, strength, and reliability.
