I'm actually already familiar with that thread. He did some things which I'm interested in trying, such as straight-piping the intake, which is a little controversial in the car community.
Surprisingly subaru has gotten worse instead of better. I've seen threads on a subaru forum where people are getting high teens to low 20s in their 2019 outback.
I'm hoping that the mods I've listed will help push the car to over 30 mpg consistently.
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