Is there any problem running 2 bov´s One just before the manifold and another just before the i/c...

It would "empty" the boost on charge pipes much faster...or i´m just a :1?

 

No need to unless you have some cash just burning a hole in your pocket and if that is the case make a fat donation to the site instead.

 

not much money here, but i´ve got 2 bov´s, both cost me 0?

By the way, one is a bosch bypass/diverter type valve, known for leaking trough time, the other is a my99 subaru prodrive valve...

What is the best for my setup considering it´s a low boost setup with a responsive turbo(saab gt17) and i want the least lag possible?

The Subaru seems my best choice, but i have to make a SS flange to adpat it on the charge pipes...

 

You won't need two BOV's for your setup. I've only heard of people running very high boost needing 2 BOV's to vent all the pressure.

I've also heard some cars with mean *** compressor surge because they were only running 1 BOV on a very high boost setup.

 

I'd say go with the suby unit, and only do one bov. Bosch is junk :P

 

like he said