Good 2-way remote car starters include the Viper 5301 Responder LE 2-Way Remote Start System and the Performance Teknique ICMB-7071 Remote Start System. Some alternative remote car starters are the Drone from Compustar, the Avital 4103 1-Way Remote Start with Keyless Entry and the Directed SmartStart GPS, as of 2015.
The Viper 5301 has a range of 2,000 feet and can be programmed to lock doors, start the car and control the sunroof. The ICBM-7071 has a range of 3,000 feet and can remotely engage the air conditioning unit. The Directed SmartStart GPS is limited in range only by cellphone service availability and uses the cloud network to turn a smartphone into a remote car controller that can start the car, control windows and even provide navigation services.