I used to install the DEI ones, now they have a programmable turbo timer so you can turn your truck off, and take your keys. it automatically keeps your truck running for the set amount of time to allow the turbo to cool, then shuts off.

 

I have a compustar, it waits to start, based of the light, alarms and averything also. Then it has other cool features like turbo timer, and extended run mode where the you can keep it running with the keys out and the system armed (great for reststops) works great.

 

I had remote start working using a timed WTS. It was also not that great because of the long cranking times the truck takes to start sometimes. I elected to have it disabled since the truck could just take off since I park it in gear.