I found a Turbosmart BOV that blows to the atmosphere and recirculates the air into the engine as well? I really want the BOV sound but i dont want to sacrafice power TOO much (i would be willing to sacrafice a little)? Has anybody installed this in their 1.8t so they can tell me what kind of sound they get and do they have any problems?

Having a BOV doesn't really sacrifice power. It's more peoples concern of running rich.

If i go with a regular BOV will the check engine light come on?

Maybe, maybe not.

Serioslly dude, why post stuff like this, you know not many people run bovs on stock or close to settings. Its retarded to. If your running a bigger turbo, and the setup calls for it, thats differnt. Why even post stuff like that?

Please read this:
DV vs BOV

BOV will be fine for about 6-8 months then you will more than likely get a fouled O2 sensor. but that should be the extent of your problems.

Dont forget the potential for a fould catalytic converter

Yeah, if ran a test pipe i would run one, but im destroying the high flow cat i paid alot for.

yeah there is potential for a clogged cat.

AB1618 you paid like 150 for your cat