Has anyone had/heard any good experiences with one? I've been looking around for something that will work well for a car that doesnt have a air mass meter like the rest of the cars do.. The one im looking at is adjustable, works like BOV and a CBV at the same time:
http://www.autospeed.com/shop/category_638/browse.html
"stealth fx"

side note: yeah, my cars got some 20 year old technology called a bosch k-jetronic injection... basically like cross between carbs and electronic, a normal BOV will work, but will dump fuel like mad possibly causing backfires

 

I believe the ones you are talking about (link is restricted at my work) are Australian BOV's. As far as quality, they work just as good as anybody else's. As far as working on YOUR car, you need to research that. Why do you need BOV's? Or do you just wanna sound cool?

 

TurboXS makes a nice BOV:

http://www.turboxs.com/racing_bypass_valve.htm

It plumbs back into the intake so you don't have that moment where you run pig rich.

 

Josepi: Yeah that bypass valve is damn good, i know a few folks that are using it... however im a sucker for the vrrrm psssh

Skywalker: yeah, its from australia, i'm looking to buy one from an importer (a VW shop) out in california.

its a hybrid valve, basically twin exits, one w/ a trumpet for the coolness effect, and one which is designed to act as a CBV (Compressor bypass valve) which vents air back into the turbo inlet side downstream from the metering plate...

So far GFB (go fast bits) is the only company i've seen that makes a hybrid. anyone know of anyothers?

The reason it would be better on my car then a normal blow off valve is that my car doesnt have an air mass meter, its for a mechanical injection system just like the old VW, Porsche, and Mercedes had called a Bosche K-Jetronic:CIS (constant injection system) where the air level coming in must push a plate open which then moves some valves in a fuel distributor... thus blowing off large amounts of air between shifts (15+ psi usually does it in larger volume bov's) will cause the air/fuel mixture to stoich quite quickly and cause backfires if you're running rich anyway.

So basically the adjustable feature on this one allows me to tweak the volume of air thats released into the atmosphere vs. what gets set back into the inlet...

 

oh yeah, the other added feature of the adjustability is that when you adjust the balance between exits, it will adjust the sound level along with it
i'd hate to get a bov that started to piss me off after a few months

 

I KNOW that others make em, i've seen em...i'm hunting now!

 

I KNEW IT!!

Turbosmart dual port p/n: FG-BOV-003DP

The LOUDEST BOVs available...

 

I dig this one... (it's not the dual port )