hey guys looking for some help. I have an 06 gt with 140k miles.
Here are my mods
Ford performance
Intake Manifold
Twin 62mm TB
47lb fuel injectors
LSD
3.73 gears

Stage 2 exedy clutch stock flywheel
Airaid CAI
Bama tune
Deatschwerk 340 lph fuel pump.
Sr v2 coilovers.

My issues.
For some reason the ECM is not telling my AC compressor to turn on. I have taken it to ford and they want to charge 700 just to figure out the issue. Any idea what I can do here?

Also, I replaced the fuel pump and...

2006 ford mustang gt