Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Subaru Legacy 2001 non-turbo PCV vent to atmosphere

19bonestock88 · 11-20-2018, 11:46 AM

I haven’t got an EJ25(or any Subaru) but I have vented my PCV to atmosphere... I feel the main benefit is that there is less oil gunk in the TB...

However, the lack of oil vapors in the intake charge could slightly lessen knock (it’s been said that oil in the fuel lessens its octane rating)

11-20-2018, 11:46 AM	#2 (permalink)
19bonestock88 Master EcoModder Join Date: Jun 2016 Location: KY Posts: 1,351 IGL - '04 Saturn Ion Team Saturn 90 day: 56.19 mpg (US) Thanks: 63 Thanked 365 Times in 268 Posts	I haven’t got an EJ25(or any Subaru) but I have vented my PCV to atmosphere... I feel the main benefit is that there is less oil gunk in the TB... However, the lack of oil vapors in the intake charge could slightly lessen knock (it’s been said that oil in the fuel lessens its octane rating) __________________ My current Ecotec project... My last Ecotec project...