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When Should I Upgrade the Throttle Body on My 2015 Mustang?

Shop S550 Throttle Bodies

A throttle body is an excellent mod for those just starting to modify their Mustangs. The install is straightforward, and it pairs well with future mods like cold air intakes.

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Your Mustang's throttle body is wired directly to you gas pedal, dictating how much you can push your pony. Larger throttle bodies allow for more air and more power. Plus there are other mods you can add in conjunction with the throttle body to fine tune your build.

American Muscle

What Does a Throttle Body Do?

A throttle body controls the amount of air coming into your Mustangs engine. As you apply the gas pedal, the blade in the throttle body opens more and more, allowing more air to enter the intake. The engine then adds the appropriate amount of fuel for the incoming air, making your Mustang accelerate. Many Mustang owners upgrade their cold air intake to allow more air to enter the engine, but they may also neglect to upgrade the throttle body. By not upgrading the throttle body at the correct power level, you can create a choke point for that air, robbing your engine of power.

BBK Throttle Body

What Benefits Does a Larger Throttle Body Have?

Upgrading your throttle body will allow your modified Mustang to take advantage of other mods you may have installed. As your Mustang makes more power, it will need more air to burn the extra fuel it’s using. By upgrading to a larger throttle body, you will allow your engine to breathe easier, and make more power. Along with the performance benefits you will also have a crisper, more responsive pedal. However, if you upgrade your throttle body too early you may not notice a difference in power, and in some cases your Mustang will feel a little more sluggish!

2015-2016 Mustang GT with a BBK Cold Air Intake

When Should I Upgrade My Throttle Body?

If you own a 2015 GT, I would recommend replacing your throttle body when you install a supercharger kit or if your car is heavily modified with exhaust and aggressive cams. Adding a throttle body to a basic bolt on 5.0 will not do much for you, and the factory throttle body is more than sufficient. Even with a full exhaust, a cold air intake, and a tune you will not gain much from a larger throttle body. Once you add a supercharger, you will notice a huge difference by upgrading especially with a positive displacement supercharger. A centrifugal supercharger or a turbo will push the air through the throttle body, so a larger throttle body will not make as big of a difference as it would on a positive displacement supercharger. The positive displacement supercharger still has to suck air through the throttle body, so opening it up will net you some ponies, especially if you are making a lot of power! V6 Mustang owners should upgrade their throttle body when adding exhaust, a cold air kit, and tuning. There aren’t as many mods available for the V6, so it’s best to add what you can until the parts companies catch up! Unfortunately for EcoBoost owners, there are no upgraded throttle bodies available yet.

Ford Racing Supercharger Kit Installed on a 2015-2016 GT

Throttle Up!

Upgrading your throttle body can be a worthwhile modification if you have the proper mods to take advantage of the increased airflow. Unless you have upgraded cams, full exhaust, or a supercharger on your GT, your money is better spent adding those mods instead. If you’re the owner of a V6 Mustang, I would recommend picking up a throttle body after a cold air intake, tune and exhaust. Combine with these parts, a throttle body will really let your Mustang shine!

GT Throttle Body Upgrade

  • Long tubes
  • Intake manifold
  • Aggressive cams
  • Supercharger or turbo

V6 Throttle Body Upgrade

  • Cold air intake 
  • Tune
  • Exhaust system
Fitment includes: 2015, 2016, 2017, 2018, 2019, GT, V6, EcoBoost, ShelbyGT350