i have the factory remote start it is actually really good hasn't failed and ive had the car for almost a month and i use it all the time. it pops the trunk up wen you hold the unlock key and another thing i think is kool is wen ur car is on with the key in the ignition u lock the doors and hold the remote start and then you can take the key out and the car is still running... i think its kool especially wen you have the car on and you need to get something inside your house and you liv in south florida.