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FJR Motorcycle Forums
Technical & Mechanical Problems
Any FI Experts Out There?
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<blockquote data-quote="MCRIDER007" data-source="post: 16840" data-attributes="member: 329"><p>I completed my high gear "roll on" performance comparisions at 66 and 94 degrees and it appears that my FJR actually does run stronger at high temperatures, at least between 4000 and 6000 rpms. The difference is not great, about 4mph after about 200 yards, but it is the opposite of what one would expect since the air is about 5 percent less dense at the higher temperature. It seemed like most of the power difference was in the 4000-5200 rpm range because there was a substantial power spike at 5200 rpms at all temperatures.</p><p></p><p>I also did a comparison of how long it took to go from 3000 to 5000 rpms and the results were similar, the FJR was faster at 94 degrees.</p><p></p><p>Any theories regarding air/fuel mixtures or inaccurate sensors that could explain what is happening?</p></blockquote><p></p>
[QUOTE="MCRIDER007, post: 16840, member: 329"] I completed my high gear "roll on" performance comparisions at 66 and 94 degrees and it appears that my FJR actually does run stronger at high temperatures, at least between 4000 and 6000 rpms. The difference is not great, about 4mph after about 200 yards, but it is the opposite of what one would expect since the air is about 5 percent less dense at the higher temperature. It seemed like most of the power difference was in the 4000-5200 rpm range because there was a substantial power spike at 5200 rpms at all temperatures. I also did a comparison of how long it took to go from 3000 to 5000 rpms and the results were similar, the FJR was faster at 94 degrees. Any theories regarding air/fuel mixtures or inaccurate sensors that could explain what is happening? [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
Any FI Experts Out There?
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