Pop-off vent

[Nathan]

When I had my RS Focus every one said, "Go on get a dump valve, get a mongoose exhaust, get this get that" Did I listen did I crap! I by cars because I like then, I don't by then to turn them into some thing they are not! Next there will be a post on hear asking how to attach neon light under a MK5 golf! But then again it is there cars so then can do what then want with then!

[Jack.T.Pickle]

I thought all turbo charged cars had a dump valve, just some have a trumpet on the end to make the chavvy, air release noise more audiable ?? 

Am I wrong  :embarassed: ??

[wantmygti]

I thought all turbo charged cars had a dump valve, just some have a trumpet on the end to make the chavvy, air release noise more audiable ?? 

Am I wrong  :embarassed: ??

I believe you are right. Standard ones recirculate the pressure, the chav dump valve release the pressure, hence the noise. Something like that anyway.

[henspeed]

Unless I am mistaken a standard turbocharged vehicle has what is known as a waste gate which as said above dumps the excedd boost back into the system, a dump valve dumps the excess boost into the engine bay creating a whoooosh in the process, and making the driver look like a twit in the process also

[Hurdy]

I though the aim of a dump valve whether it is an atmospheric or recirculated one was to help the turbo spool up quicker although I don't know what the BHP benefits are of an atmospheric dump valve is over a recirculationg one. I believe the difference is minimal and would only give any benefit to a big BHP car.

[wantmygti]

I think that the releasing dump valve actually slows the car marginally as the turbo has to spool up again after the release.

The real gain is in the noise?!?! :embarassed:

[Peskarik]

I heard the soundfiles of the pop-off valve After just one minute I was tired of the Zchhhh sound...