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FJR Motorcycle Forums
Technical & Mechanical Problems
PC III Mapping question
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<blockquote data-quote="wfooshee" data-source="post: 689748" data-attributes="member: 6354"><p>The ECU doesn't bypass the PCIII, it chases it around. The PCIII says "add 4 to the ECU's fuel map" and the ECU sees rich, and leans out. The PCIII will add 4 to that, still, but the ECU settles on something that makes it happy.</p><p></p><p>Then the rider does something nasty like changing the throttle.</p><p></p><p>The ECU is constantly "correcting" the PCIII's map adjustments, and if that makes it go somewhere out of its range, it'll throw a code.</p></blockquote><p></p>
[QUOTE="wfooshee, post: 689748, member: 6354"] The ECU doesn't bypass the PCIII, it chases it around. The PCIII says "add 4 to the ECU's fuel map" and the ECU sees rich, and leans out. The PCIII will add 4 to that, still, but the ECU settles on something that makes it happy. Then the rider does something nasty like changing the throttle. The ECU is constantly "correcting" the PCIII's map adjustments, and if that makes it go somewhere out of its range, it'll throw a code. [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
PC III Mapping question
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