OFT = Open Flash Tablet
OFM = Open Flash Manager
This is the Windows based software used to load tunes files and
OTS = Off-The-Shelf
This refers to a tune file that is "off-the-shelf", or pre-made for specific upgrades already fitted to your engine.
ROM = Read Only Memory a.k.a. Tune file or Calibration File
This is the program that is written to or read from your ECU's memory.
Tune, Program or Calibration = Please read ROM above.
ECU = Engine Control Unit (Engine Computer)
Flash, Reprogram, Upload = This is what we call the process when we write a new ROM to your ECU.