Silencing the Atmo Blow off Valve

[BHDave]

I thought so too, but if you get a set of pliers in one hand and squeeze the hose on the BOV while revving the motor with the other you get no psssshhhh, let the pliers off and rev...psssshhhhh! if you fit a highflow gas solenoid to this hose when it has no power the solenoid is closed so there will be no pssshhh. when you power it up (energize) the solenoid opens and allows the BOV to operate normally. so you would use an ignition power supply via a switch to the solenoid and the other solenoid wire to earth. Make sense??

Wont work. You aren't loading the turbo so aren't making boost. By clamping the line it will be at atmospheric pressure. If you clamp the line and then make boost it will be seeing a higher pressure in front af the BOV ALL THE TIME and so will leak all boost off constantly once your turbo starts making boost. Also because you are venting your boost you will have sluggish response.

[Sydneykid]

Hi guys, why don't you turn the boost down to zero. Then no boost to exit the BOV = no noise.

Plus I know the min rpm when my BOV operates, and I never free rev the engine to that level "it might damage the engine, not having any load on it". They can't make you "damage your engine".

[AutoTrust]

Wont work. You aren't loading the turbo so aren't making boost. By clamping the line it will be at atmospheric pressure. If you clamp the line and then make boost it will be seeing a higher pressure in front af the BOV ALL THE TIME and so will leak all boost off constantly once your turbo starts making boost. Also because you are venting your boost you will have sluggish response.

Um..... no. The BOV doesn't require boost from the plenum chamber to remain closed. It operates when it recieves vacuum from the plenum. Therefore, if you block the hose from the plenum to the bov it will hold boost and not release it when the throttle plate closes suddenly.