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Mustang Forums
2011-2014 Mustangs
Engine/Tuning
Rear O2 sensors, necessary or not? The definitive answer inside:
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<blockquote data-quote="AKDMB" data-source="post: 15418346" data-attributes="member: 162770"><p>Cool Info!</p><p></p><p>So does this mean it is appropriate to leave the rear 02's enabled in the tune, but disable the Cat Temp Control (or at least raise it to the same value as WOT Lambda table) and the related 02/Catalyst Tests? Any way to have the tune account for no catalytic converters but let the rear 02's account for the widebands aging?</p><p></p><p>I have always heard the following, or some variation of this at least.</p><p></p><p>- Set <strong>Rear 02 Sensor Config</strong> to "None", and "Disable" <strong>FAOSC</strong> (Fore/Aft Oxygen Sensor Control)</p><p></p><p>- Set <strong>Cat Temp Control</strong>, <strong>Flange Temp Control</strong> and 0<strong>2 Sensor Temp Control</strong> to "Disabled"</p><p></p><p>- Set <strong>02 Test</strong>, <strong>02 MIL</strong>, <strong>Catalyst Test</strong>, <strong>Catalyst MIL</strong> all to "Disabled" </p><p></p><p>I know these may be named differently in SCT software, and I completely understand if you don't want to share this very valuable information.</p></blockquote><p></p>
[QUOTE="AKDMB, post: 15418346, member: 162770"] Cool Info! So does this mean it is appropriate to leave the rear 02's enabled in the tune, but disable the Cat Temp Control (or at least raise it to the same value as WOT Lambda table) and the related 02/Catalyst Tests? Any way to have the tune account for no catalytic converters but let the rear 02's account for the widebands aging? I have always heard the following, or some variation of this at least. - Set [B]Rear 02 Sensor Config[/B] to "None", and "Disable" [B]FAOSC[/B] (Fore/Aft Oxygen Sensor Control) - Set [B]Cat Temp Control[/B], [B]Flange Temp Control[/B] and 0[B]2 Sensor Temp Control[/B] to "Disabled" - Set [B]02 Test[/B], [B]02 MIL[/B], [B]Catalyst Test[/B], [B]Catalyst MIL[/B] all to "Disabled" I know these may be named differently in SCT software, and I completely understand if you don't want to share this very valuable information. [/QUOTE]
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2011-2014 Mustangs
Engine/Tuning
Rear O2 sensors, necessary or not? The definitive answer inside:
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