See my post Gauging Interest: TMIC BPV adapters, you can buy some for aftermarket BOV's w/ a slotted channel for a setscrew for ~45 + shipping but you have to get creative with the hoses. If i can find enough people to go in with my i have a co-worker who will make them up for me with 1.25" hose barb (stock WRX BPV return line size) or other sizes for $65 shipped a pair (one for the TMIC and one for the BPV) but i need to have someone vouch for 8 others or 4 more sets.
93 SS 5MT - TD05H-16G, 06 TMIC, Walbro, Zeitronix WB-02 - Scrapped too much rust
91 SS AT
97 Outback - Prodrive quick rack, DMS 40
Right thats cause an atmospheric BOV w/o a proper tune for it/managment is a bad idea, turbo legacy or wrx/sti.
Im talking about using them to allow you to use a stock WRX/STI recirc. bypass valve (BPV) over the crappy stock plastic legacy turbo BPV. All i intend these adapters to do is allow you to relocate that flange since the stock setup interferes with the throttle cable assembly
93 SS 5MT - TD05H-16G, 06 TMIC, Walbro, Zeitronix WB-02 - Scrapped too much rust
91 SS AT
97 Outback - Prodrive quick rack, DMS 40