who works on their car and doesnt tune it to work with the newly added parts? the colder you can run your motor the more power it will make, but the faster it will go away. a 180* thermo is a good choice to run a little cooler. now, if you were to argue the 160* thermo with me then i would agree. that is too cold.Originally Posted by silverstreak
I agree 100%. Fuel and spark are calibrated to operate at 195* for optimum performance. Putting a lower thermostat will do nothing but hurt performance and fuel economy. Putting a lower thermostat is old school thinking. It was ok to do back in the day but not now. If someone can show me one bit of evidence where a lower temp thermostat increased performance or lowered KR then I will eat my shirt.
