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The high-flow catalytic converter maintains emissions compliance while significantly outflowing the restrictive factory unit
In development for 4+ years to achieve precise fitment
Less than 42mm tall
Comes with a black finish that holds up better against environmental elements than traditional anodizing
PERRIN Turbo Sump Restrictor - 2018-2024 Subaru WRX / 2017-2018 Forester XT / 2019-2024 Ascent / 2020-2024 Legacy GT / Outback GT Subaru-Crosstrek-2021 The high-flow catalytic converter maintainsPERRIN Turbo Sump Restrictor 2018 2024 Subaru WRX 2017 2018 Forester XT 2019 2024 Ascent 2020 2024 Legacy GT Outback GT Features: Prevents burning oil smell and blue smoke after installing J pipes or turbo back exhausts. Helps maintain proper balance of exhaust pressure and vacuum on turbo seals. Especially effective for cars with catless J pipes. Enhances turbo sump pump efficiency, reducing oil leaks. Does not affect oil flow to the turbo. Tested