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ST/RS Fords
Focus ST
Fuel issue. Need some help.
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<blockquote data-quote="Gringo185" data-source="post: 14075236" data-attributes="member: 42351"><p>No, stock tune. The only performance mod is an FRPP cat-back exhaust. I started this thread on another forum and I think we decided that the most likely cause is that the baseline fuel maps are based on pure gasoline and it's the 10% ethanol content that is causing the lean condition and driving the fuel trims slightly rich.</p></blockquote><p></p>
[QUOTE="Gringo185, post: 14075236, member: 42351"] No, stock tune. The only performance mod is an FRPP cat-back exhaust. I started this thread on another forum and I think we decided that the most likely cause is that the baseline fuel maps are based on pure gasoline and it's the 10% ethanol content that is causing the lean condition and driving the fuel trims slightly rich. [/QUOTE]
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ST/RS Fords
Focus ST
Fuel issue. Need some help.
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