v6 tune and upgrade problems !!!!!!!!!

hello friends!

i am a proud owner of a 2008 v6 mustang
since i got the car in Spet. for 11K
i have invested over 4800 in it
the upgrades started from:

window lovers
rear wheel scoops
mirror cover
billit grille
flowmaster scavnger series duals
bbk CAI
bbk 70mm TB
sct / x3 flash tuner

sadly, after all that i feel like i lost rwhp rather then gain any..

so on to the problem,
the accleration is horrible, if i floor it in 4th ill feel no torque and ater the rpms hit 3.5 thoussand the engine gets thrown into fail safe mode
with the codes that read:
tb forced closed and p2114
and say im going 55 mph
ill trow the car in netural and the rpms will just drop and then go up almost to 4000 rpm

the fix to fail safe was turning the key off and back on and it would go away..

i called bama and they didnt know wtf was going on at all
and few peple other then me had this problem.

soo please give me your input as far as what could be happning

also do you think i need to tweek the pramaters in the tuner
like the
WOT a/f ratio
global spark
etc

thanks for reading this
i just wanna see that my money was well spent becasue at the moment im not pleased at all
:-/