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2015+ S550 Mustangs
5.0L Coyote V8 Engine Modification/Discussion
Gen 3 2.9L Whipple S550 Mustang GT Dyno Results - VIDEO INSIDE -
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<blockquote data-quote="smashedheadcat" data-source="post: 15833640" data-attributes="member: 7756"><p>It's not really "living in the 2000's" going by the tailpipe, it's simply looking at what was posted. I appreciate the OP clearing up his commanded lambda setting though. I lived in Switzerland for a few years, and the fuel there is typically 98 octane. Provided the OEM sensors are functioning properly and see .79 lambda, this is a great spot to be in on 98 octane. </p><p></p><p>Something to keep in mind:</p><p></p><p>I understand most enthusiasts with any age on them have sort of calibrated their minds around the old 14.64 stoich (E0) pump gas. I'd be pretty confident in assuming that the tailpipe sniffer/readout is calibrated to read off othat scale as well. </p><p></p><p>For reference</p><p>.89 is 13.0 = OUCH (shown on the dyno graph)</p><p>.82 is 12.0 = Not conservative on 91</p><p>.79 is 11.56 = Sort of conservative on 91</p><p>.75 is 10.98 = Conservative on 91</p><p></p><p>You have oxygen sensors (that are not lab-grade) that each report an average of the lambda on a bank of four cylinders. Odds are, you've got a lean cylinder and you've got a rich one. The leaners cylinder may not be conservative at all.</p></blockquote><p></p>
[QUOTE="smashedheadcat, post: 15833640, member: 7756"] It's not really "living in the 2000's" going by the tailpipe, it's simply looking at what was posted. I appreciate the OP clearing up his commanded lambda setting though. I lived in Switzerland for a few years, and the fuel there is typically 98 octane. Provided the OEM sensors are functioning properly and see .79 lambda, this is a great spot to be in on 98 octane. Something to keep in mind: I understand most enthusiasts with any age on them have sort of calibrated their minds around the old 14.64 stoich (E0) pump gas. I'd be pretty confident in assuming that the tailpipe sniffer/readout is calibrated to read off othat scale as well. For reference .89 is 13.0 = OUCH (shown on the dyno graph) .82 is 12.0 = Not conservative on 91 .79 is 11.56 = Sort of conservative on 91 .75 is 10.98 = Conservative on 91 You have oxygen sensors (that are not lab-grade) that each report an average of the lambda on a bank of four cylinders. Odds are, you've got a lean cylinder and you've got a rich one. The leaners cylinder may not be conservative at all. [/QUOTE]
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5.0L Coyote V8 Engine Modification/Discussion
Gen 3 2.9L Whipple S550 Mustang GT Dyno Results - VIDEO INSIDE -
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