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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, ...


1

I wish I could provide you with facts, I map to reality and facts are the basis of it. Alas, I cannot. I do not believe you will have valid information unless you sample the stock 02 sensor and map output without change other than a cue of the stock 02 sensors rolling through. The only way to determine truth regarding the matter is to buy a bunch of the ...


1

I just wanted to give an update on this issue as it has been resolved. First off, the noise actually got worse over this winter to where would happen for longer periods of time. I ended up taking my car into the dealer to have then do a total inspection and diagnose the noise. First off it ended up not being A/C related at all. They said the noise was ...



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