I installed the Silicon hoses about 2 years ago. I also installed a new thermostat and upgraded fan switch this year. I did notice a bit of difference with just the hoses, but that was probably due to not leaking coolant anymore. I noticed more of a difference with the upgraded fan switch/new thermostat. I think that you will see more of an improvement in heat management if the hoses were intstalled with the fan switch as opposed to hoping for a noticeable difference with just the hoses. I ended up getting the Motion Pro crimpers.