A common question we get from customers is the difference between an intake that states it requires a tune and an intake that doesn’t require a tune. Then, there are even some Mustang cold air intakes out there that have a removable spacer that will allow the owner to choose. The basic explanation is that the computer on a factory tune can only comprehend so much air registering through the mass air flow (MAF) sensor in the intake tube. If you were to alter that air-flow too much, the engine could run lean and ultimately cause catastrophic engine failure. So, choosing the correct intake for your needs is vital to your Mustang engine’s longevity — read on to figure out the difference!


“POWER INCREASES THROUGHOUT THE ENTIRE POWERBAND”The main difference between a “tune-required” intake is the diameter of the intake tube. This is because the computer is told from the factory that the intake tube is a certain diameter and if that diameter is altered, the engine could to lean, idle incorrectly and ultimately cause serious problems.

That’s why some cold air intakes, like the Roush Intake for the 2015-2016 GT, included an 85mm spacer to allow Mustang owners to use the factory tune with their intake. This 85mm spacer will allow the Mustang’s computer on a factory tune to operate correctly with the added benefits of a freer-flowing filter with some power gains.

However, if you were to remove the 85mm spacer to reveal the full 105mm bore, the MAF sensor would be confused on a factory tune since the bore size was changed. If the computer is tuned correctly for this increase in intake bore size, then you will be able to see the full benefit of adding a cold air intake to your Mustang. With the computer allowing and recognizing more air through a larger bore, you’ll be able to really see power increases throughout the entire powerband — especially towards the top!


Mustang JLT Intakes At CJ Pony PartsTune-Required JLT Intake on our 2015 Mustang GT

To get the absolute most out of your cold air intake, it’s important to pick up a tuner to finish the combo. Adding a cold air intake to your engine will definitely free up some power and restriction in the intake track, but a proper tune will allow you to get the most out of your intake. A good example of a tune-required intake would be most JLT Performance intakes.

Ideally, if you’re adding an intake to your Mustang, you’ll want to pick up a tuner to go along with it. It’s like adding a supercharger to your Mustang, but keeping the factory all-season tires on the rear. What’s the use of having 600+ horsepower if you can’t put it to the ground and spin all the way through 4th gear? Same kind of thinking goes along with a cold air intake — if you want to get the most out of your new intake, a tune to go along with the modification is what you need to finish the job properly!

Benefits of a Tune-Required Cold Air Intake:

  • A tune will allow you to get maximum power from your new cold air intake.
  • No question of whether or not your engine is running too lean.
  • Louder Intake Noise
  • Increased Gas Mileage
  • Better Throttle Response when combined with a tune


Mustang Airaid Intakes At CJ Pony PartsNo-Tune-Required Airaid Intake on our 2015 Mustang GT

The benefits of a cold air intake are awesome – more intake noise, added power, increased gas mileage – it’s almost a no-brainer! If you don’t want to get a tune in order to maximize the power increases of your cold air intake, there are still many reasons to rid of that factory airbox.

Adding a no-tune required cold air intake, such as most AiraidIntakes, you’ll still be able to see increased power, increase gas mileage and the intake noise we all know and love. These numbers won’t be as drastically different than an intake/tune combo, but definitely worth it.

A large reason as to why many would go with a no tune required cold air intake is the fact that you don’t have to mess with your Mustang’s computer. For those that want to keep the factory tune intact on their Mustang but want a step up in power – a no tune required intake is the perfect choice for you!

Benefits of a No Tune Required Intake:

  • Slight Increase In Power
  • Louder Intake Noise
  • Increased Gas Mileage
  • Don’t Have To Tune – For those who are more concerned with the factory warranty


If you’re the kind of Mustang owner who wants to get every ounce of power as they can out of their ride, then a cold air intake and tune combo would be ideal for you. The tune will allow you to get every horsepower possible out of adding the intake to your car. It’s a win-win.

Now, if you’re just looking for a bump in power on your street car but aren’t too worried about getting every horsepower out of it, then a no tune required intake is for you. An added benefit of choosing this kind of intake is that you won’t have to tune your car which keeps your factory tune intact – this is very important to some Mustang owners.

Thank you CJ Pony Parts for this great article!