i argued with a female cop for about 10 mins on the fact that the amount of light outside and the interior of the car affecting the read-out. you cant even see through my friends focus too well during the day and we pass cops all the tine. most dont care. if it looks good keep it on. youll get ticketed but that something you have to deal with with nice cars. hell ive been pulled in a stock mustang for going 4 over, just because he needed one more ticket for the night.
