This mod was pretty straight forward and easy. I got a bmw performance spoiler from Taiwan like the rest of the members here and on the Fest. I love the mod and have no regrets.
The spoiler arrived well packaged with a roll of two sided tape. I cut the tape into strips and attached it to the back of the spoiler. I than laid the spoiler on a used yoga mat and peeled off the backing. I used a 50/50 mix of windex and water to spray on the clean trunk deck. The spoiler slid very easily. I actually wiped off some of the liquid with a paper as I thought I would have to wait forever for it to dry. IT came out great. The spoiler had a slight spot of paint missing as you can see from the pic. Also, the right corner was sitting up a little; however, every almost every member I have read who did the install had the same thing. I initially put a piece of tape there as well, but it was visible. It is really not that visible and you will forget about it.
The link has the pics:
https://plus.google.com/photos/11077...LzrhvCVwrqnuwE