I've heard that the hood scoop is secured with both tape AND bolts/screws. The side scoops may only be secured with tape, but you probably want to be positive before trying to yank them off.
Ask your dealership service department to look it up. They should have documentation on hand for stuff like this, since they could potentially find themselves doing repair work that involved replacing the part. The documentation they would refer to would include definitive answers.
Also, if you go to remove the scoops and louvers, i you may want to consider "cutting" the double-sided tape with fishing wire instead of just yanking. I'd be ever so slightly paranoid of ripping the color-coat off considering how strong that 3M stuff gets vs uncured paint.
Either way you go, have a plan in place for dealing with residue and the pieces of tape that end up favoring the car when you pull it off. I'm not sure how you safely clean that crap off, but I know a few people out there have done it while swapping spoiler models.
2012 Mustang GT
| Grabber Blue
| Manual Trans
| Prem Charcoal Trim | Comfort Pkg | 18" Polished Al Wheels | Pedestal Spoiler | Born: 04/15/2011
Mod List: Visor Warning Label Delete | LED Map/Trunk/Plate/Reverse/Marker Lights | Sylvania SilverStar Head/Foglights | 3M Clearbra Kit | Clear Front Marker Lenses | 401A Aluminum Shifter | Ghost Armor Radio Display Protection | GT500 Axel-back Exhaust | 4x Pioneer TS-D6802R Speakers | Dynamat! | Lloyd Ultimat Floormats (Ebony) | 50% Window Tint