This is not meant in a mean way, but with all your mods, you should have been waaaaaay faster than that. I ran with just a Levels intercooler, GFB DV+ and maybe my resonator cut out, and a tune and I ran a 13.198 my one and only time tracking my car. (Also was on 91 octane) I had thought I'd be...
Looks like it's a CAI, recalibration, and mufflers.
https://www.levittownfordparts.com/roush-performance-mustang-power-pack-level-ecoboost-p-4912.html?gclid=CjwKCAjw9e3YBRBcEiwAzjCJugCp2m9kiFPCJH73ggbKQjt1NyeDZBYxBvNlvEWKZ5s8gn96urDUdhoCWXkQAvD_BwE
I have a non PP Ecoboost premium, and on stock tune and FP tune I was limited somewhere between 120 and 125. Fastest I have been after removing the limiter with a canned SCT tune was 130... in the rain like a dumbass with a death wish lol
I'm on the Ford Performance tune, and sometimes in manual shifting mode in sport I get a weird stumbling in 1st gear, kinda lunging when taking off from a standstill, like if I don't press the pedal firmly enough perhaps. Its annoying but happens mostly in manual mode, sometimes in auto mode in...