Ranked 1st in our list of recommended electronic engine control and sells for $135.01 (as of 30/08/2018 04:07 PDT details ) , more than 90% of the Flex-a-lite 31165 reviews are positive. With features such as senses coolant temperature and sets fan speed 60 100% for better cooling control and directs fans to run for 30 seconds after vehicle is turned off, it is indeed our top pick among electronic engine control.