GReddy Subaru Impreza WRX/STI Blow-off valve Type FV (from 2008)

BOV FV Kit floating valve structure BFV-610

Out of stock

Barcode

4991995776093

SKU

11561210

350.00€ 282.26€

GReddy is proud to introduce a new generation of "Push Type Blow Off Valve", the GReddy BOV FV. The "FV" stand for Floating Valve, and it is this breakthrough in design that produces quicker valve response, increased valve travel, and improved resistance to premature valve lift and boost leak. The unique floating valve design incorporates a revised adjustable dual spring system and diaphragm ventilation, while maintaining the advantages of the previous model's push valve structure and heat resistant silicone diaphragm and valve ratio. This allows the springs and diaphragm to better control the valve and boost. By relocating one spring under and keeping one over the diaphragm, it makes the need for spring pre-load less dependent on idle and light boost situations and more on keeping the valve closed under boost. The result is our best performing GReddy Blow-off Valve yet! Another improvement includes an adjustable, sliding top hat, to adjust the hose fitting location, without complete dis-assembly. The FV also keeps its overall mounting and outlet dimensions, which means it is compatible with the industry standard two-bolt GReddy BOV flange and can easily replace existing Type RS and RZ applications, as well as use the same optional RS and RZ outlet adapters.

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Details

Type-FV Blow-Off ValveType-FV Blow-Off Valve

1. Improved valve control under reving conditions

Traditional BOV - Reving/Idle

Previous models could have a tendency for the valve to open under reving at idle, which could cause a rough idle situation.

Greddy Blow OFF Valve FV - Reving/Idle

The floating valve design prevents unnecessary opening and closing of the blow off valve.Thus the idle is not affected.

2. Quicker response, even during low boost conditions

Traditional BOV - Low Boost/Off Throttle

To prevent the valve from opening at idle/reving, the adjustment spring must be tighten, thus resulting in decrease response for low rpm and low boost levels.

Greddy Blow OFF Valve FV - Low Boost OFF Throttle

With the floating valve design, additional spring preload is not required.This results in a quick responding valve.

Operation Behavior

ON Throttle Situations (BOV FV Closed)

The combination of the new adjustable dual spring system and the intake manifold boost pressure (with large diaphragm to valve area ratio) provide great control to keep the valve shut even in high boost situations.

OFF Throttle Situations (BOV FV Opens)

Since the spring preload does not have to be adjusted for idle, thw lower spring rate allows the charge pipe boost pressure to easily open the valve faster and with more lift, once the intake manifold boost pressure changes to vaccum, when the throttle is closed.

OFF Throttle Situations (BOV FV Closes)

Even with the throttle closed and the vaccum still pulling on the diaphragm, once excess boost has been expelled, the new lower spring closes the valve in preperation for throttle to be re-opened and boost to resume.The result is improved turbo boost response.

Sliding Top Cover

Adjustable Hose Fitting Position - Top Hat Rotation Top Cover

The new sliding top hat design, enables the user to adjust the hose fitting location without having to disassemble the entire blow-off valve unit. Simply remove three coresponding hex bolts and loose other three. Then slide the top hat to a desired position and re-install the hex bolts, to lock it into place.

90 degree fitting adjustment possible with the method described above.Repeat to rotate the top hat and hose fitting as needed.

Subaru Impreza WRX/STI Blow-off valve FV type (02-05)BOV FV Kit floating valve structure

Includes

Blow Off Valve
BOV gasket
Mounting Hardware
Recirulation Tube
Adapter Flange

*Note: Compatible with standard 2-bolt GReddy BOV flanges and Type-RZ outlet adapters.

Manual

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FAQ(5)

Customer Questions

What is the benefit of the Greddy Blow OFF Valve FV over traditional BOV in terms of valve control under reving conditions?

The floating valve design of Greddy Blow OFF Valve FV prevents unnecessary opening and closing of the valve under reving conditions, ensuring that the idle is not affected.

How does the Greddy Blow OFF Valve FV provide quicker response even during low boost conditions compared to traditional BOV?

The floating valve design of Greddy Blow OFF Valve FV eliminates the need for additional spring preload, resulting in a quick responding valve even at low boost levels.

What is the operation behavior of the Greddy Blow OFF Valve FV in ON Throttle Situations?

The combination of the new adjustable dual spring system and the intake manifold boost pressure provide great control to keep the valve shut even in high boost situations.

How does the sliding top cover of the Greddy Blow OFF Valve FV enable adjustable hose fitting position?

The sliding top hat design allows the user to adjust the hose fitting location without disassembling the entire blow-off valve unit, providing flexibility in hose fitting position.

What is included in the Subaru Impreza WRX/STI Blow-off valve FV type (02-05)BOV FV Kit?

The kit includes Blow Off Valve, BOV gasket, Mounting Hardware, Recirculation Tube, and Adapter Flange. It is compatible with standard 2-bolt GRed