Anyone use these electric fans?

The Ford Contour fans are a good example, they’re for a 2.5l V6. But I’ve never had an issue with them cooling my 400+ hp 5.6l, 340
Just out of curiosity, do you know if your fans are turning off when you are at speed?

Have you ever tried running at speed with the fans disconnected?

That would ease my mind that the fan housing / shroud is not restricting flow.