Use a PLASTIC razor blade and a heat gun. I've taken MANY badges/dealer stickers off in my days. If any residue is left a little goo-gone work great. Put it on the rag and wipe the residue that's left, don't put the goo-gone directly on the paint.
2012 Focus Sport, STexhaust, COBB Filter, Snorkel delete, Toms Tune
SOLD2006 SAP, Draxas Header, MBRPexhaust, CAI, Tuned, FRPP lowering kit, SVT 5spoke wheels, HaloProjectorHeadlights, Niteshaded Side markers/tails, Mazda rearwiper, mustang antenna