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FJR Motorcycle Forums
Technical & Mechanical Problems
Power Commander V w/Autotune Discussion
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<blockquote data-quote="jammess" data-source="post: 1316549" data-attributes="member: 89387"><p>If you want a richer mixture look into Innovate Motor Sports wideband O2 sensor with LC-2 controller available on Amazon pretty reasonable. You can then connect a laptop to the LC-2 via USB port and select virtually any AFR you want. I use the LC-2 on my two oilheads with an AFR of 12.9:1 which results in smoother idle and no detectable surging. I went with 12.9:1 because hot rod tuners consider this to be the lean best power AFR, I concur. Also results in noticeably more low end torque and performance. The wideband O2 sensor takes the place of your narrow band sensor and the ECU won't know the difference. I assume the FJR has one O2 sensor ahead of the catalytic converter? If not that presents a problem. Oh, with the LC-2 you can run a realtime recording of your AFR ratio as the bike runs to verify operation.</p><p></p><p>I would like to see someone with an FJR try this. If I had an FJR I would. Knowing Yamaha I bet the later FJR generation bikes don't surge or run lean anyway. Yamaha seems to have a good rep when it comes to listening to their customers unlike some manufacturers who shall remain nameless.</p></blockquote><p></p>
[QUOTE="jammess, post: 1316549, member: 89387"] If you want a richer mixture look into Innovate Motor Sports wideband O2 sensor with LC-2 controller available on Amazon pretty reasonable. You can then connect a laptop to the LC-2 via USB port and select virtually any AFR you want. I use the LC-2 on my two oilheads with an AFR of 12.9:1 which results in smoother idle and no detectable surging. I went with 12.9:1 because hot rod tuners consider this to be the lean best power AFR, I concur. Also results in noticeably more low end torque and performance. The wideband O2 sensor takes the place of your narrow band sensor and the ECU won't know the difference. I assume the FJR has one O2 sensor ahead of the catalytic converter? If not that presents a problem. Oh, with the LC-2 you can run a realtime recording of your AFR ratio as the bike runs to verify operation. I would like to see someone with an FJR try this. If I had an FJR I would. Knowing Yamaha I bet the later FJR generation bikes don't surge or run lean anyway. Yamaha seems to have a good rep when it comes to listening to their customers unlike some manufacturers who shall remain nameless. [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
Power Commander V w/Autotune Discussion
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