Fitech running fat

The afr is tracking but its definately wrong as its smokes and backfires randomly through exhaust. Ive never heard of shorting the + - together. How does that help? Thanks!
Shorting the cables together (after you disconnect them from the battery of course LOL) will help drain the capacitors in the system and will make sure the system resets. Give it a try, it can't hurt and it worked for me twice.