Not only will it free up horsepower, but it will also support other engine modifications you do. We carry 2015-2021 Ford Mustang tuners for all applications including the 2.3 Ecoboost, 3.7L V6, 5.2l Voodoo, and the Coyote 5.0 engines. Choose from the SCT X4 or Cobb V3 tuner to get started. These handheld tuners can be used to adjust all types of engine parameters to tune after cold air intake installs, exhaust additions, or any other engine modification you add to your S550 Mustang. They are also able to run diagnostic codes when you have a check engine light on! Want to get even more out of your S550 tuner? Ask us about our custom tune program for even better performance. Look no further than Late Model Restoration for all of your 2015-2021 Mustang tuner needs.