I did this mod on my 06 Daytona. I live in Maine.....no check engine lights / no codes! i did not have a tuner that would change fan settings, soooo..... it was only beneficial while driving (air flow through rad) or with the 25c fan mod used at the race track. But the car definitely had more power with the 180 stat. I raced an identical 06 Daytona (he had a stock stat ) and I was consistently 2-3 tenths quicker in the 1/4