What up Z? So I have 2010 Ram with the 5.7 obviously. I am using the Superchips Cortex tuner in my truck currently. I have searched just about everywhere and have yet to receive a definitive answer. My question is, what is the best fan setting to use when tuning with a stock Tstat. I will be towing my 17' boat 1500 miles in about a week so please keep that in mind when helping me out. I appreciate the help in advance.