I've heard that removing the fan and putting in an electric fan also frees up some engine power. I dunno if that is just an advertisers way to sell their product, but that may be another plus along with having a cleaner engine compartment.
1968 Chevy C-30 292 SM 465 1995 Jeep Grand Cherokee 242 4.0 2005 Jeep Wrangler SE 2.4L & 6 spd