I had Charles at HFD1Motorports make me a custom map last fall. It was made on a day where the temp was like 42 degrees. The bike now seems to be running a little rich in the hotter weather. There is definately a good amount of jet black soot on the end of the muffler. If I wipe with a clean rag, it is a fair amount of soot.

So obviously the map that was made in the cold weather is running a tad rich in the hotter weather, so I want to tweak it a little. I can have Charles redo it if needed, but I was wondering if I should just lean it out slightly myself.

I have his custom map and the Dynojet software loaded onto my PC. I can open the map, highlight the entire map table, and hit the up and down page buttons to adjust all the fields at once. To my way of thinking, if the hotter air is less dense, causing my engine to run a little rich, it should be fairly constant throughout the rev-range, correct? If I took the entire map and adjusted the fuel to -1 of what it is currently at, or -2, that should be about right, correct?

I would not think that it is only rich at a certain RPM, if it is caused by the temp of the air.

Have you guys done this before? Taken a custom map that was made in either a hot or cold time of year, and modified it for the opposite? Like a hot weather map that runs lean in the winter, just adding +1 or +2 across the board, or vise-versa?

What would you guys suggest? The adjustment is probably fairly small. I guess I could try -1 and see how it runs, and go from there.

Thoughts?