there's a mod on this in the performance forum that keeps the fan locked till the normal cutoff at around 3k rpm. the way you did this i think it is locked and will stay locked past the cutoff. the fan's not designed for that but aside from losing a few horses i don't think there are downsides. in the winter you'd probably have to unlock it...
1993 300e-2.8 - gone now <sigh>
"Do not adjust your mind, it's reality that's malfunctioning"