Well my headlights are brighter and taillights too..That makes no sense. If you take a 180° tstat and the stock ~202°, both are wide open by 203° and the 180° would offer zero advantage over the stock unit especially at 225°+. The tstat opening isnt larger on the 180°, it just opens sooner, if youre getting up to 225, something else is wrong, altitude, air in the system, collasped hose, blockage but the t-stat isnt the issue