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FJR Motorcycle Forums
Technical & Mechanical Problems
Airbox Modification
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<blockquote data-quote="RossKean" data-source="post: 955913" data-attributes="member: 19880"><p>Thanks, again...</p><p></p><p>When I had the PC III on the bike (with the LV cans), fuel mileage was quite poor - probably 15% fewer MPG. It didn't seem to matter much whether I was riding at highway speeds or putting around at low rpm. I think the custom PC tune was dumping in a bunch of fuel at low rpm for smoothness and even some at higher throttle positions for another couple of ponies. I have no idea whether the dyno shop where it was done was any good and I never received a copy of the dyno report (previous owner showed me a receipt so I know some dyno work was done). I probably should have tried some different maps but ended out just pulling it off the bike.</p><p></p><p>I tried unplugging the O2 sensor (ran it like that for a few months) and while it might have made a slight mileage improvement, it wasn't much.</p><p></p><p>I'm actually pretty happy with the way the FJR runs. Like most people, I wouldn't mind getting something-for-nothing or at least getting a noticeable improvement in power or driveability without sacrificing an up-front major cost, long-term additional cost at the pump or any degree of mechanical reliability.</p><p></p><p>Ross</p></blockquote><p></p>
[QUOTE="RossKean, post: 955913, member: 19880"] Thanks, again... When I had the PC III on the bike (with the LV cans), fuel mileage was quite poor - probably 15% fewer MPG. It didn't seem to matter much whether I was riding at highway speeds or putting around at low rpm. I think the custom PC tune was dumping in a bunch of fuel at low rpm for smoothness and even some at higher throttle positions for another couple of ponies. I have no idea whether the dyno shop where it was done was any good and I never received a copy of the dyno report (previous owner showed me a receipt so I know some dyno work was done). I probably should have tried some different maps but ended out just pulling it off the bike. I tried unplugging the O2 sensor (ran it like that for a few months) and while it might have made a slight mileage improvement, it wasn't much. I'm actually pretty happy with the way the FJR runs. Like most people, I wouldn't mind getting something-for-nothing or at least getting a noticeable improvement in power or driveability without sacrificing an up-front major cost, long-term additional cost at the pump or any degree of mechanical reliability. Ross [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
Airbox Modification
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