Believe it or not I actually sell this stuff on the side of our Audio/Video Store but Every car is different so thats why I asked. I ran Piaa's in my Civic and loved them but the RSX stock bulbs are already alot brighten that my Civics stock ones..so I take from what I hear that even the Piaa's arent brighter than stock? And someone asked about Euro light..I have two opinions...They are a good clean light bulbs but they do break or burn out quite often.