Torque Solution TiAL Blow Off Valve Adapter w/ Plug | 2002-2019 Subaru WRX / STi (TS-SU-TIALc)

It fit my Tial QR BOV/BPV perfectly! And installed in my grimmspeed TMIC easily absolutely no leaks or issues. Only thing I would suggest is look into custom hose or into making your own since running a stock location BOV with the adapter won’t reach the stock recirculating hose.

I purchased this adaptor for my tial q bov for my 11 sti just days before my tune, fit was perfect, came nicely packaged, and on time!, fit is perfect, no issues, only cons which is just me being nit picky, was the flange had some nics in it, and looked like it was hit off something, no big deal though, I also bought the grimmspeed 3x thicker gasket when I purchased the adaptor, but when I unboxed it all, to my surprise which is another pro to me, the flange is actually o ringed!, so no need for a gasket as the flange seals to the inter cooler via the o ring, really nice little touch honestly, shipping was fast, fitment is great, and looks really nice! overall happy with my purchase

Works flawlessly. Fits the stock top mount. Was able to use my Tial q bov with stock intercooler