Material: High quality aluminum alloy.
Accessories: Flanges, bolts and gaskets are included

Material: High quality aluminum alloy.
Accessories: Flanges, bolts and gaskets are included

Material: High quality aluminum alloy.
Accessories: Flanges, bolts and gaskets are included

Material: High quality aluminum alloy.
Accessories: Flanges, bolts and gaskets are included

Material: High quality aluminum alloy.
Accessories: Flanges, bolts and gaskets are included

Material: High quality aluminum alloy.
Accessories: Flanges, bolts and gaskets are included

Material: High quality aluminum alloy.
Accessories: Flanges, bolts and gaskets are included

Material: High quality aluminum alloy.
Accessories: Flanges, bolts and gaskets are included

Material: High quality aluminum alloy.
Accessories: Flanges, bolts and gaskets are included

Material: High quality aluminum alloy.
Accessories: Flanges, bolts and gaskets are included

Material: High quality aluminum alloy.
Accessories: Flanges, bolts and gaskets are included

Material: High quality aluminum alloy.
Accessories: Flanges, bolts and gaskets are included

Material: High quality aluminum alloy.
Accessories: Flanges, bolts and gaskets are included

Material: High quality aluminum alloy.
Accessories: Flanges, bolts and gaskets are included

Material: High quality aluminum alloy.
Accessories: Flanges, bolts and gaskets are included

Material: High quality aluminum alloy.
Accessories: Flanges, bolts and gaskets are included

Material: High quality aluminum alloy.
Accessories: Flanges, bolts and gaskets are included

Material: High quality aluminum alloy.
Accessories: Flanges, bolts and gaskets are included

Material: High quality aluminum alloy.
Accessories: Flanges, bolts and gaskets are included

Material: High quality aluminum alloy.
Accessories: Flanges, bolts and gaskets are included

Material: High quality aluminum alloy.
Accessories: Flanges, bolts and gaskets are included

Material: High quality aluminum alloy.
Accessories: Flanges, bolts and gaskets are included

Material: High quality aluminum alloy.
Accessories: Flanges, bolts and gaskets are included

Material: High quality aluminum alloy.
Accessories: Flanges, bolts and gaskets are included

Material: High quality aluminum alloy.
Accessories: Flanges, bolts and gaskets are included

China Blow Off Valve - DTune Racing Performance Parts

[Blow off valve]
The Compressor Bypass Valve (CBV), also known as a blow-off valve, helps to keep the turbo spinning when the driver lets off the throttle.
The Blow Off Valve helps protect your turbo from compressor surges. If you should suddenly release the throttle (while on boost), the BOV opens and dumps (by the dump tube) the inlet pressure.These surges occur when throttle is released while under turbo boost. With no place to go, the compressed air pushes back against the turbo, possibly damaging it. The Blow Off Valve will react quickly to this situation and release the compressed air, giving you a reassuring, distinctive sound to let you know it’s working properly.

Dump valves are fitted to the engines of turbo charged cars and sit between the turbo outlet and the throttle body. When transitioning from a boosted state to a closed throttle state (as in between shifts), due to inertia, the turbo continues to pressurize air, but the closed throttle prevents the compressed air from entering the engine. In this case the pressure exceeds the preset spring pressure in the dump valve and the excess pressure is bled off to atmosphere.

Even with a dump valve the compressed air acts as a brake on the turbo (slowing it down), because the pressure on the backside of the turbo is at a higher pressure than on the front side (and the air actually wants to flow through the turbo backwards).

A blowoff valve is a more elegant solution to this problem by allowing the turbo to "freewheel" when the throttle is closed (equalizing the pressure on both sides of the turbo). Unlike a dump valve a blowoff valve can be used at multiple boost settings without reconfiguration.

Blowoff valves are sometimes incorrectly called dump valves because they serve a similar function, but they are very different solutions to the same problem.

[Specification of DTune Blow Off Valves]
-Material: High quality aluminum alloy.
-CNC machined high quality anodized aluminum construction is lightweight and durable.
-Colour of RED,BLUE,SILVER or PURPLE are choiceable
-Accessories: Flanges, bolts and gaskets are included

[Features of Dtune Blow Off Valves]
All our BOVs have been tested strictly before selling
-Perfect for almost ANY turbo application
-Provides a loud blow-off sound when boost is released
-Advanced spring design allows for great response and performance at high boost