Reflash

[Gumby 1100_imp]

Don't know where Don's shop is, but maybe I'll run over next June once school's out. I'm next door in Ohio and the wife (school teacher, hence "after school") has family in New Jersey near east PA. Might drop the bike off and continue on for a visit and pick it up when done.

Any concerns though? Run hotter with the spark advanced? Reduced spark plug life? Per Kevin Cameron, a small retard in spark [like, .5 degree to 1 degree] yields huge plug life increases with almost no power loss. Don't know how hard it is to find that sweet spot where power is good and plug is good too.

Anything anybody can report on would be good. Have only heard the "pros" so far but nobody has posted up any "cons" of doing this.

Regarding richening the mix, this will not only improve performance but will also help to run cooler. I've had similar mapping improvements made on other bikes using fuel managers and it usually also increases fuel economy.

The lean A/F ratio set by the factory may be good for cleaner emissions, but the added heat of running lean is bad for the bike and it will usually run more efficiently on a richer mix. The stock ECU timing gets retarded in certain zones partly to prevent overheating because of running so lean. I believe that once the mix is richened you can safely advance the timing without destroying the plugs.

I cannot think of anything about remapping/reflashing that would be bad, unless he goes too far from optimum A/F ratio or optimum timing in any area.