I have an aftermarket AutoStart AS-1775 installed on mine. Like any autostart system, you'll need a bypass for the security system, sold seperatly from whever you buy the autostart system.

Not sure if any other relay's are required with the intelli key, but mine works just like any other auto start system. Just have to remember to use the remote that comes with the autostart system, as using the oem key fob does not disengage the starter kill.