New answers tagged turbocharger
So after LOTS of research, it turns out that my Subaru Forester XT is running at 10.5 AFR at WOT because Subaru's don't like our 95RON fuel very much and it's a safety precaution to add an additional margin for error to prevent knocking if I ever tried filling up at a dodgy fuel pump in rural Africa.
Actually running rich is less dangerous than running lean. I don't know specifically about Subaru, but in general, running lean can cause detonation more easily. And yes, while 14.7:1 is the stoichiometric ratio deemed as perfect for an air fuel mixture, running rich has the big advantage of reducing the chances of pre-ignition or pinging. In a turbo car, ...
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