I'm not really contemplating doing this but it's crossed my mind a few times.. since the S4's have two turbos, would it be possible to put a DV on one turbo and a BOV on another? I know people say BOV's aren't good for audi's so you don't need to tell me that, I'm just wondering if it would work?

 

i think its even worse/harder to do than 2 BOV's, since its unbalanced as the sir from the BOV is put into the atmosphere and the air from the DV stays in the system