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MY03 XT EU
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204 Posts
Discussion Starter #1
I get ~2.0X g/rev @ WOT (14.5 psi boost) and another 2.0T forester in the same conditions is getting like 1.8g/rev. Mine looks rich the other looks fine. Mine is lower on power, the other makes like 10 (engine) bhp more.

MAF rescale or replace?
 

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2004 Subaru FXT MT
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1,841 Posts
Based on the limited information, sounds like a tuning adjustment, not a sensor replacement.

You can either tune AFR's with the MAF cal or the open loop tables, or a mixture of the two. If your AFR's aren't matching the open loop table, the MAF probably should be adjusted.
 
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