2011 V6 Mustang automatic

I'm starting at basically stock, putting on new suspension, up coming mods are gears/driveline, maybe an AFE air filter???, headers and new exhaust with no cats.

Tires are still stock size right now eventually changing those to 18-19" and 275/30" ish ?

I know I will need tuner for gear change and tire size change, but are these vehicles that sensitive to air intake and exhaust mods as well?

I've seen that MPT and Bama are preferred on these cars, but are they...

To tune or not to tune THIS is MY question...lol