Hey, I always wondered what the diff between a blowoff valve and dump valve was. I do know how to reconise a blowoff valve and I do know It's mounted on the turbo pipings, and increases your turbo durability. But idk that much about dump valves, where they mounted, what there job is and what kind of sound you hear from them and when. Cause all the time a car passes by my friends say : aaah listen to that dump valve Lolz, then I say no that's a blowoff valve what I hear hehe.
Hope anyone could explain me.

Thanks in advance!!!

 

Second result on google:

http://en.wikipedia.org/wiki/Blowoff_valve

 

So there actuly saying it's totally the samething....