Today I replaced the factory engine driven clutch/fan with an electric fan. I ordered a Spal VA18-AP10/C-41S from Summit, a 16" low profile puller. I through bolted the fan with nylon bolts, nuts. The LQ4's ECU will eventually control the fan, so temporarily I installed a build type thermo switch with the bulb insulated and tie wrapped to the top radiator hose.
I think this is a good stock upgrade. Seems like it removed a little load and reduced some vibration.
Once the engine temp rises enough to activate the fan, the temperature quickly drops.
