I have the following mods on my 03 Mustang GT

CAI
75mm throttle
Underdrive pulleys
Long tube
X pipe no cats
Short throw
2.55 LHP fuel pump
Stage 2 clutch
4.10
Eibac sport line springs
Koni shocks n struts
17 Stafford rims (9front 10.5 rea)

Do I need a custom tune or would the Diablo tune do the ...

Where would I be able to get a tune like u mention for some one..

I did a couple mods all at once and now I smell my car running rich and it's hesitate at WOT. I still havent plugged the tuner in(Stock tunr).I have the following mods.

03 Mustang GT
CAI
75mm throttle
Underdrive pulleys
Long tube
X pipe no cats
Short throw
2.55 LHP fuel pump
Stage 2 clutch
4.10 ...