a couple of things. But right now I just need to tighten the bolts and get the seal tight. When we put on the CAI, we just undid the bumper a bit, and we slipped hands up in there and tightened. It was a night so we just put the bumper back, but it is not a tight seal around drivers headlight and bumper so I gotta tighten it however I'm too lazy. Its like a two finger gap. I don't want water to touch the CAI. Then like at the bottom my bolt hole thing got cracked, and it doesn't hold right. Its just a bunch of little stuff with the bumper.