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Mustang Forums
2011-2014 Mustangs
Engine/Tuning
Losing fuel control in upper RPMs
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<blockquote data-quote="wile2k" data-source="post: 14238832" data-attributes="member: 75530"><p>What are you tuning / logging with?</p><p></p><p>My first thought was that it is using open loop tables and not actually responding to O2 feedback. The newer Mustangs aren't supposed to do that though, it should be closed loop at all times. Odd thing in the log is that it has a flag for "open loop status" which switches to "1" shortly after you go WOT on the pull. </p><p></p><p>I've been messing with the HPTuners beta but I'm not intimately familiar with the Ford parameters yet. Do you recall changing something that might have affected that?</p></blockquote><p></p>
[QUOTE="wile2k, post: 14238832, member: 75530"] What are you tuning / logging with? My first thought was that it is using open loop tables and not actually responding to O2 feedback. The newer Mustangs aren't supposed to do that though, it should be closed loop at all times. Odd thing in the log is that it has a flag for "open loop status" which switches to "1" shortly after you go WOT on the pull. I've been messing with the HPTuners beta but I'm not intimately familiar with the Ford parameters yet. Do you recall changing something that might have affected that? [/QUOTE]
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2011-2014 Mustangs
Engine/Tuning
Losing fuel control in upper RPMs
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