Now, I do have my pusher fans wired in on a
supplemental circuit. And they do indeed make a difference when I really, really need it, which I never do unless I was trapped in a really bad, hot, backup, which I never have been. More likely, it would save my miserable butt from a boilover resulting from a failed SPAL motor, or a failed relay, or a blown circuit breaker on my primary puller fan side. I think my pusher fans would get me through most "moderately hot" situations. Here's the thread on how I wired it:
Cool Modification - For Pusher Fans Only, Though