I had the sniper on, wired, plumbed and running in 2hrs.
My 420hp 331 stroker loves it.
Anyone that has issues with either the Fitech or Sniper, is usually a wiring screw up(they didn't read the directions) or pre existing problem. Follow the instructions to a Tee. Make good connections. Should be straightforward.
Some people run a relay off the ignition switch for the sniper key signal. Some, like myself just add a wire.