u should have air being pulled away from the radiator first off, it wouldnt make sense to pump hotinto it from your engine bay. also trying hooking up a manual swirch to ur fan so u can have it run at all times. for some reason my fan wasnt tunring on all the time after i went turbo. so i just wired in a togglr switch and i keep it on all the time when the car is runing. the cooler the motor the better