I have one but i haven't turboed my car yet. still waiting on the intercooler. But What I was wondering is how the bosch BOV sounds. Does it have a whistle to it or is it just a WHHooooosh? Cuz if it doesn't I want one that does.

 

So are you looking for a whistle or the woosh?

 

mine is very quiet with a wooooosh. but i dont think it lets enough air out because i get a nice loud compressor surge churp.

 

projecteg has a bosch, on a B16 and its not loud but its a nice whosh.....

 

it has a nice deep whoosh sound and flutters somtimes

 

Stock dsms give off a nice throaty wooosh when you take off the piping and give the accelerator calbe a quick turn.. every BOV acts differently to every engine/turbo setup.

 

Alittle trick to vent the Bosch into the atmosphere is to install a one way valve from a septic/well system on the end.The Bosch valve is a bypass valve,not a true BOV.It bleeds air just above idle.

 

i think all BOVS are open at idle?

 

So you are saying that when at idle it is sucking in unfiltered air. That would mean that I would be loosing boost when it gets boosted or not? Would the positive pressure of the boost on the vac line close it when boosted?

 

BOVs aren't supposed to suck in air at idle or any other rpm range, DSM bov's definately don't.