I know mine cools the motor very well and fast. I let the engine get a little extra hot and then flipped the fan on and watched the guage drop in about 15 seconds.
Electric fan = 3G alternator if you want long life & reliability from your car.
The electric fan saves some HP. The stock fan's parasitic drag runs from 7-12 HP depending on who you talk to. The electric fan uses about 1/2 HP of power from the electrical system.
Figure this:
Ignition system & computer = 12 amps
Fuel pump = 12 amps
Exterior lights = 15 amps
Fan (heater or A/C) = 15 amps (can run between 5-25 amps depending on setting)
Radio & instruments = 10 amps
Wipers = 10 amps
That's grand total of 74 amps from a 65 amp alternator. Talk about overdrawn at the bank!
my car is not EFI anymore, i dont have any of the computers, i never use my wipers, and i have no A/c and rarely use my heat....does that save me on the amps or its it being drawn the entire time?