FAC, no offense but, STFU and just get your dam turbo kit installed and tuned. I am sure no matter what kit you get, it will come with a decent BOV and other components. Also, there are a few TXS BOV's if I am not mistaken. The RFL BOV stands for Real f u c k i n Loud, and it's named that for a reason. Honestly, just use the BOV that comes with whatever package you get unless it is a real piece o' s h i t. It just seems that you are wanting to change the BOV for a LOUDER sound. Once again, no offense, but WANTING a BOV just for the louder sound, IMHO is RICE!