To be specific, you'll feel NO difference with a 160-stat only change, because you must reprogram the PCM so your fans (latest models have elec fans) to come on earlier to help take advantage of the cooler temps. But still, you'll feel nothing; it's one of those mods that are necessary for better performance which must include increased air (cooler air&#33, better fueling and exhaust.

My temp gauge seldom moves above the approx 160 mark on the gauge even on hottest days, though typically the engine actual engine temps are closer to 175 on Gen 3 motors with 160 stats.