Or u can block the pcv, and vent crank case and head breather to atmosphere.

Catch can or AOS didnt work on mine, as there was always oil in tmic.

using the Perth-WRX mobile app

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MY08 STI 422whp at 1.5bar on E85, built by Diversion Garage, assembled and tuned by EvoR

Update from new owner: 375whp at 1.4bar on 98, at Tokyo Motorsport