I have a 2018 Mustang Shelby GT350R. As you know new vehicles are also throttle by wire, you can tune out the throttle response lag or you can install a piggy back throttle controller called a “Pedal Commander” it doesn’t add hp, but it does eliminate the hesitation when the throttle is pressed. Easy plug n play, no wires to cut. https://www.pedalcommander.com/ In the case of my car, I tuned it, eliminated the throttle hesitation, and also gained 88 rear wheel hp. Most importantly when you slam the gas pedal it’s responce is like a cable actuated throttle.