I'm dumb, but would the throttle body reduce restriction by enough to feel a difference? This is the first i've seen talk about it on the forum.
It allows more air to flow into the intake manifold. Increasing throttle response/power delivery.
It is similar feeling to maxing out the K03 Wastegate Actuator.
These mods are normally suggested for a stage 3 ST, custom tuned, looking for more mods. In this scenario, It is very noticeable. I also suggest you get a tune revision to smooth out the power delivery. The power delivery can be quite harsh and make the car hard to drive. My car was the hardest to drive with the wga mod, and the 2.3 mustang TB. Torque would hit super hard, I would be lighting it up in third, both tires because I am LSD equipped. Not great for driving.