Seller notes

The Mishimoto Baffled Oil Catch Can Kit is designed and engineered to eliminate harmful blow by vapors from re-entering your engine. The EJ25 in the STI is known for producing blow by gases during both normal and severe driving, especially when boost levels are increased. This oil blowby can work its way into your intake system, reducing the octane rating of your fuel and potentially causing damaging detonation. Detonation has a profoundly negative effect on the already sensitive EJ25 engine. Th...

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