I had a high end Audiovox alarm with remote start added. the installer has to deal with the honda-key requirement, though. you give up a key that gets hidden inside the dashboard and 'connected' to the steering column to allow remote start.
<font face="Verdana, Arial" size="2">Originally posted by ODY_DataSeek: Has anyone had any experience with adding one of those great systems that starts your van to warm/cool it before you get in? pros/cons/costs/do-it-yourself ???</font>