custom tunes?

[ackermanzx3]

is there a stock performance tune that comes on the delta black, if there is what does it enhance?
Should a custom tune be put on if i have added modifications to the car?
Engine mods:
udp
cai
full free flow exhaust
larger wires
larger tb (port matched im)
sts (dont know if this would make a diff on a tune)

[ackermanzx3]

also, the cold air intake gets rid of the mas air flow sensor housing. i have heard that can cause problems if not compensated for on the tune