FJR Top Gun
Join Date: Jul 2013
Location: near Great Salt Lake, Utah, USA, Sol III
The FJR engine is liquid-cooled and thermostat-controlled, so I doubt that the problem is caused by a lean mixture, or that a rich mixture can fix it. If I wanted to try that approach, Ivan's Performance of Georgia has an ECU re-flash option which (I hear) fixes several such fueling issues in the best way. The stock ECU does have a lean-fueling injector map, to satisfy the EPA, so this "richer" approach may (or may not) help. It's easy to mail the ECU to Ivan, and he usually gets them done in a day.
There are two very different heat fixes for the Gen1s, the left side and the right side heat fixes. There is also an under-the-gas-tank "heat blanket" fix that keeps the family jewels somewhat cooler. None of these are "final fixes" for the excess heat, but somebody thought they were good, or at least better than nothing. I can't say, myself, because I have a Gen2; Yamaha fixed most of the FJR glitches, by then.
2008 FJR1300A - Pirelli Angel GT (Spec A) tires, RDL seat, TPMS, GPS digital speedometer (Amazon ~US$28.00).
P.S. Life is too short, and health is too valuable, to ride on cheap parade-duty tires.