Tnx for the explanation Brian, now it all makes sense. For folks with a centrifugal blower, it should get into boost a lot quicker. For folks with a PD blower, it would probably have a tendency to lose traction....esp with street tires.
On another note, do you remove the rears seats? That only takes a few mins with another pair of hands...and dumps apx 40 lbs. The heated leather passenger seat weighs aprx 52 lbs I'm told, and comes out with just 4 bolts and the electrical connector. Then remove the spare tire + jack....and any other misc stuff in the trunk. That's a bunch more weight right there....possibly 40-60 lbs.
The fuel in a full tank weighs 100.6 lbs. So you could dump some more weight by juggling fuels levels a bit.
If you do install LT's...and either no cats or high flow cats..and either an X or H, I think you will be in for a rude awakening. That was the one mod on my 2010 auto, that was blatantly obvious. I installed JBA titanium ceramic coated LT's...and mating high flow catted H. I can push my fingers down hard on any of the 8 x primaries, after having the blower on, 3 blocks from the house, without burning my fingers. The theory with ceramic coated LT's is... the hotter the exhaust gases are inside the primaries and collector's, the faster they flow. The oem cats on my 4.6 were at base of eng bay..and run very hot. The new high flow cats reside below the front seats. Between relocating the cats + ceramic coated LT's, there was a drastic drop in eng bay temps..like a huge redux. B4, the steeda STB, which is black in color, was blazing hot to the touch, now it's luke warm at most. My aeroforce gauges indicated the oem cats would hit 1800+ deg F at WOT. High flow cats are a bit higher. I used one of those Fluke 61 point + shoot IR thermometers to take some measurements..... but that was with hood up, eng on idle..and after having it on the hwy for 20-30 mins...( with the blower being used quite a bit).
The 2010-2012 cars all have that severely restricted upper grille. I tossed it (and the oem upper foglamps), and replaced with a 7 bar upper grille. Now it's bucket loads more air through the upper grille. The new 7 bar upper grille also solved another issue, the air is now straight into the.. 'snorkel' that in turn feeds the input to the oem airbox. With the oem upper grille, the intake air has to do two 90 deg bends to the....'snorkel'. My boost went up slightly, when on the hwy. Oem snorkel is aprx 1.25 wide x 6-7" tall, and resides at extreme right side ( driver's side). You can't see it with oem upper grille.
I replaced the oem paper filter with a K+N. You can hear the air whistle though it. It flows another 22% per K+N. If on dusty dirty roads on a semi regular basis, I would not use the K+N.