I ended up using a combination of Goo Gone and zaino clay bar. What a pain in the ass it ended up being. Lot's of time spent sitting on my doors (windows rolled down obviously), going at the tape residue. Damn I had a lot of tape residue on there after ripping that all off.

Well worth the pain and suffering though

 

This works the best for me, tried them all.

 

Nothing works better than the solvents most dealerships carry to remove other dealer's (and customer's) stickers. I don't know what it is or where to get it, but if you drive up to the wash bay of a dealership and ask if they can spare some (just show them what you're doing) they probably won't mind.......especially if you use that particular dealership for service, parts, or sales