I too have a Ford remote start in my 06 LS. It isn't two-way, but it is quite good. My dealer also commented what a PITA it was to install. Like hrlincoln said, it does everything that the original keyfob does, and you can even activate the rear window defrost and/or the headlights after starting the vehicle. The range is good - I can activate it from inside my office building with my car at the far end of the parking lot. The Ford one does not require the engine immobilizer (with coded keys) to be permanently disabled like most 3rd party systems. Chamarro mentioned having to sacrafice a key to get the coded chip from it... it is used to disable this security feature.