lets say even if you had a "fan" that could handle sustained use in an engine bay. and that could push more CFM of air then the car would use... IE making boost like a positive displacement blower.... where is this power coming from? 12V's right... where does that come from... the Alt when the Alt is under load it puts more of a resistance on the pulley which takes power to turn. nothing is over 100% efficient...

so there in the conversion from rotation to 12volts to rotation you will loose energy at each transition. even the most efficient would prob loose 15% so a 15% lose each time you end up with 72% of what you started with...

 

alright thanks i just saved my self a crap load of money ha looks like ill be saveing up to get a new car hopefully a 04 or 05