Disconnect Ignition

Elite Series Firmware Help › Elite Series ECU Installation Guide › Powering Up for the first timeUpdated Sep 2026

Before a new Elite ECU knows anything about your engine, its ignition outputs could do things your coils won't survive. Unplugging the ignition side for the first power-up takes a minute and removes that risk entirely.

A fresh Elite, or one carrying a map from a different car, has no idea what coils or ignitors it's connected to. If its ignition settings don't match your hardware, the outputs can charge the coils far longer than they're built for, and the first you know about it is a hot or dead coil or ignitor. That can happen the moment the ECU powers up, before you've even cranked.

What to do

  1. Before the first power-up, unplug the ignition modules, pull the ignition fuse, or both.
  2. Power the ECU, connect ESP and set up the ignition to match your coils and ignitors, including the correct dwell mode.
  3. Save the map, power down, then reconnect the ignition.

This matters most when the ECU hasn't been configured for your engine yet. We do it on every install anyway, because it costs nothing. Do the same for fuel by following disable injectors, then work through checking power, ground and communications and checking sensors. Mounting and dwell mode details are in ignition modules.