Ooooops, ok, I stand corrected. MOSTLY, but not all tunes will leave fans running a minute or two after ignition shut off for cool down. It may or may not be an indication that there's been a reprogramming of your PCM. You can also try and pay attention as car heats up and temps and see when fans turn on. Stock turn on temps are usually higher. Otherwise the only real way to know is to READ the settings from the PCM itself and see if it is not stock.