1. If the the vehicle is equipped with a factory remote starter, it needs to be completely uninstalled
2. if the unit was programmed with a Valet Key, the remote start will not work
3. If the battery was low during programming, it may not work correctly
4. If the main ignition harness is not powering the correct circuits, it will not stay running.
Points 1 to 3 are important to understand since all remote starters on these cars enable a certain permission on the car to remotely start without the key present. Sometimes, RESETING THE EVO and reprogramming will solve this.
Hold down programming button while plugging in power.
Let go of button when LED is RED.
Push and hold button again until all three LEDs start to alternate.
Disconnect unit, she is now reset.
Point 4 can easily be tested by testing the vehicles ignition harness wires and seeing if they are being powered during remote start as they should.
Starter 1 and 2 wires should be being powered as Start
Ignition 1 and 2 should both be being powered as an ignition signal