Hey fellas,I asked a similar question earlier and never got a response but I'm running a 180 degree thermostat in my engine and it never seems to get to full operating temp.Now I'm going by my gauge and how it read with my 250's and not by a thermometer.....yeah I guess i should check....but anyway have any of you had the same problem with the bypass hooked up.I would run a 195 thermostat but fear that If my engine ever ran hot it would void my warranty because they have these little gizmos on the block so if it runs hot they'll know their whistler did.Well thanks in advance for any replies. Gerald