I have a 2008 Supra 22SSV with the 340 EXT cat motor. I bought it last year and this is my first wake boat. I have had other I/O 's and outboards. Between last year and running it on a fake a lake this year to do oil change, my temp on the dash never goes above 150. I am usually in the mid 140's all the time. I was under the impression these had a 160 degree thermostat. I would have thought temps would be closer to 160 on the dash? am I wrong here? Could the thermostat be opening too early? Let me know your thoughts.