Quote: Originally Posted by
eagleslayor 
Hi car enthusiasts,
I hope you help me in my silly questions as you always do.
I'm using a 450W inverter on my computer which has a AC PSU, do I need a DC-DC regulator for the voltage peeks?
No.
A DC-DC power supply is a better solution than an inverter, mind you.
Quote:
I have a bluetooth car kit from Nokia, how can I include it in my audio system? Or better, how use my carputer as a bluetooth headset? I know Road Runner has something like this but I'm totally lost with it.
You need a bluetooth adapter for the PC that will interface with your phone. The BT adapter would need to support the audio gateway.
Quote:
Unless I get a shutdown controller, I will have to manually shutdown/hibernate my carputer before turning off the ignition, so which one do you recommend?
http://store.mp3car.com/Micro_Shutdo..._p/pwr-007.htm
zootjeff (a member here) makes awesome products and provides top-shelf support.
I recommend looking into an all-in one DC-DC power supply with integrated shutdown controller. You can lose the inverter or keep it for other purposes and have all the benefits of a DC-DC PSU (less size, less heat, less EMI, etc).