The compustar is a very nice setup, and I have been very pleased with it so far, I love the turbo timer and remote start functions.
"Or, I think the sensor on the parking brake is to ground. T off of that in to a switch to pin #22. Then you would have a high idle switch that is only effective when the parking brake is set (for safety). Just put the switch to high idle and put the parking brake on before you get out. Then, when you remote start it it will be at high idle. "
For the turbo timer to work the parking brake sensor has to be installed and the parking brake has to be set. The turbo timer shuts off the truck two minutes after the parking brake is set, if the key is in the off position, or you can shut it off remotely from the remote or while in the truck by tapping the brake. Another cool feature lets you put it in an extended idle mode where the truck will idle for 15 minutes with out the key, and you can turn it off remotely, great if you want to leave it running and armed while you go do something really quick.