Spal and others have fan controllers that are pulse width modulated. They run a little over $100. Wouldn't that let the aftermarket fans live? I have one of the aftermarket fans and since I have already modded it to fit the radiator, I may as well try the Spal controller on it.
The fan and a controller will end up being about $350 or so. That's not too much for this fan IF it will live for me.
