A custom calibration and cold air intake is always the best choice if you are looking to start the modding process. A calibration in essence unleashes what this engine wants to do to but can not without the help of a great calibration. Not to mention you get an SCT X4 with the package, you will need one of these when you get addicted to the power and crave a lot more. cough* cough* (supercharger) or if you want to put in a different set of rear end gears.
Here is a link to what we would recommend to start with: 2015-16 Mustang GT JLT Plastic Cold Air Intake Custom Tuner Package
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