Chip Tuning and Re-Flashing Devices
Handheld chip re-flashers have been around for a while. But recently, many of the most popular units are adding features that allow users to change key parameters like fueling curves and ignition timing.
The basic scenario is always the same: Use your LM-1 to log AFR, RPM, MAP, etc. before and after each change.
Here are some links to the more popular hardware chip re-flashing devices:
Superchips Custom Tuning (SCT)