Tell me about it man... I was and am in your boat... confusing what to do. After much research I finally decided on stuff to buy. So I did purchase hardpipes and an HKS BOV... My main purpose was to eliminate the turkey and add a little better performance in the most simple manner. This was the following setup choices I received thru a PM from 505zoom after I selected my products:
There are 3 different ways to set up the system:
1. BOV only. This setup is usually the loudest which a lot of people like, but you can get some stalling issues when you go to neutral. (put the valve wherever you like for this setup)
2. BOV/BPV setup. With this setup, you won't get as much sound out of the HKS, but it generally sounds pretty good. Stalling is either eliminated or greatly reduced over the BOV only setup. (put the valve near the throttle body for this setup)
3. BPV only with upgraded (at least 1") fittings. This is what I run. Not nearly as loud, but the performance is much better. No stalling at all, and the car doesn't go super rich when you make a quick shift. (works best to put the valve on the hotpipe for this setup)
I like knowing that the wooosh is loud with setup #1 but dont want to experience any stalling. So I'm going with setup #2, which seems ideal as it uses the stock BPV, and will in the end eliminate or lower the chances of stalling. Since I'm going with setup #2, I'll be placing my HKS BOV similar to this pic:
I should have it installed early next week, I'll put some pic's and sound clips as soon as it's complete. Hopefully no more turkey.