I love my diffuser. It just looks so menacing. It's solidly mounted to the chassis at seven points and fed clean air by a flat bottom. Light, strong, no drag, and increased downforce. This is my third attempt at a diffuser. The first was fiberglass and just for show as I didn't fully understand how they worked. The second was an update of the first replacing the fins with Plexiglas. it looked better (slightly), but it still had no benefit. This model is far superior to the first two. While not perfect, it is based on hours of research, and it should have a positive effect.