I installed a Z1 lower temp thermostat today. Playing around with a few things to see how coolant pressure reacts. Waiting for everything to dry out. The Z1 one is 170 deg. opening. The Mishimoto one opens up at 150 deg. Factory opens at 180 deg but I always see 190 to 200 deg on my gauge. First test of the Z1 thermostat the car is at 180 deg. We shall see what happens.
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