Just food for thought: I was on a modern charger forum where a member was performing the benefits/draw backs of certain "bolt ons", a 180 t-stat was one of the pieces. He said while it did let the car remain at a cooler IDLE temp, it really did not change the driving temps( I can verify this, I also installed one with the same results bought on sale from MMX) the said test car actually was slower after the install.

He provided a handful of track timeslips to back up his claims.