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Mustang Forums
2015+ S550 Mustangs
2015+ S550 Mustang Talk
Factory A/F Gauge Inaccuracy?
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<blockquote data-quote="offroadkarter" data-source="post: 16340115" data-attributes="member: 79484"><p>I don't believe the factory gauge knows when the car has switched to E85. I know on my Lund FF tune or E85R tune it shows 10.x AFR's and Alex from Lund tuning has said this is 100% normal. The Ngauge meanwhile gives out completely normal AFR readings.</p><p></p><p>I see you're still on 93, I have a feeling the factory AFR gauge is set around known factory flow rates and any tampering with that causes the computer to trip up. Above my pay grade though, if the logs are looking safe I'd trust those.</p></blockquote><p></p>
[QUOTE="offroadkarter, post: 16340115, member: 79484"] I don't believe the factory gauge knows when the car has switched to E85. I know on my Lund FF tune or E85R tune it shows 10.x AFR's and Alex from Lund tuning has said this is 100% normal. The Ngauge meanwhile gives out completely normal AFR readings. I see you're still on 93, I have a feeling the factory AFR gauge is set around known factory flow rates and any tampering with that causes the computer to trip up. Above my pay grade though, if the logs are looking safe I'd trust those. [/QUOTE]
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Factory A/F Gauge Inaccuracy?
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