quick BOV question

[theKnifeArtist]

im probably getting the TurboXS RFL BOV...you know..that one with the horn...
would i be hearing the psshhh noise at the slightest give of gas? or just when the turbo starts spooling up?
im auto btw.

 

[Supracentral]

A blow off valve simply releases pressure from the system when the throttle plate closes. This is to protect the compressor from the shockwave that is generated when the throttle plate slams closed. It also helps the turbo from 100% spooling down during a shift on a manual trans car.

You don't hear a BOV while spooling up. You only hear it when you let off the gas.

 

[theKnifeArtist]

heh, right that. thats what i meant, sorry i just worded it wrong...
but my question is if i give very little gas and then release, will i get a blow off noise? or do i have to have the turbo spooled up to get a blow off sound at the release?

 

[Supracentral]

heh, right that. thats what i meant, sorry i just worded it wrong...
but my question is if i give very little gas and then release, will i get a blow off noise? or do i have to have the turbo spooled up to get a blow off sound at the release?

This BOV is adjustable. You add "shims" (they are really washers) to adjust how far the pressure differential needs to be before it "blows off" - as long as you are generating some positive boost, and if the valve is set soft enough, it will blow off all the time. The tighter you set it, the more boost you need to be making for it to blow off.

 

[oscolivar1]

read this it was just covered recently
http://www.supramania.com/forums/showthread.php?t=18535

 

[theKnifeArtist]

ohh i think supracentral cleared it up for me. itll just get some tweaking to get it to blow off at the right amount of pressure i guess