First off, you have a PWM (pulse width modulation) fan setup. Pulse Width Modulation (PWM) is a technique used to control the power delivered to electrical devices by varying the width of the pulses in a digital signal. It allows for precise control of analog devices like motors and LEDs by simulating a varying voltage through a series of on and off signals, where the ratio of on time to the total cycle time is known as the duty cycle. In other words, it's not just on or off, it's virtually any speed that's called for............
I am using HP Tuners to control my ECT (engine coolant temp), along with a Mishimoto 180* stat. In the pics (snapshots of the HP Tuners pages) below I show the stock settings, and you can see these engines are programmed to run hot. I also included another pic which shows my adjustments to the PWM settings, along with some comments.
The cooling system works as a team: the stat, the fan and the AGS are the three players. You can't really control ECT properly (IMHO) unless you synchronize the whole team.
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