Astra H VXR Breather Hose Kit Color:Red but the weak point however

but the weak point however is the valve mechanism itself

the operation of the factory BPV is not aimed at throttle response

Airtec Stage 1 & Stage2

It is important that the contents of the can do not rise above the internal baffle

Astra H VXR Breather Hose Kit Color:Red but the weak point howeverThe SD Hoses Silicone Breather hose kit (part no. SD21) has been designed to replace the standard restrictive OEM hoses on the Astra H VXR. The hose is constructed to provide a constant radius reducing restriction throughout the whole piping. The hose is made from high quality 6 layer mutli ply silicone. It is available in Black, Red, White or Blue to compliment the signature colours of the Astra H VXR range.