I know this has been talked about over and over. I read those thread and to me it's a BIG MESS. I got to understand it but i found it hard to dig thru all those post to find the good info. I just want to share with everyone what i came to understand.
Big thanks to Laidback for bringing the "fake ups" idea to us.
carPC Turn On / Shutdown Controller
(got this idea from someone in annother post)
In the BIOS set your motherboard to turn on after powerloss so the second you feed power to the power supply it will turn on.
(I got this idea from Laidback's website)
Get an old serial port device, rip the connector off of it, take the cover off and solder a wire on PIN 8. If you look very closly the pins will be numbered on the connector. Refer to the diagram for wiring.
Go into your control panel -> Power Options - Create a generic UPS with these settings
This will also cure the turn off pop because the deck/amp will turn off before the computer does, as for turn on pop, if you have a pioneer deck like mine, you won't have a problem because it takes a second or two to turn on the amp. Just enough time to let the pop happen when the amp is off.
Edit:
Updated graphic