Quick run-down on how to program your old-school GM chip for EFI.

Other vehicles will likely be something similar.

Moates no longer exists - but www.boostednw.com is now carrying the torch!

BIN - the actual tune file, the thing you mess with.
XDF - The "mask" that interprets the ECU and the tuner software.
ADX - The data definition file, kinda like the "settings" for the software.
XDL - Datalog file