Free Shipping On Orders Over $49. Details

Talk to a Mustang Enthusiast
M-F 8:30A-11P, Sat-Sun 8:30A-9P
Win $15,000!! Enter Now

Ford Performance K&N Air Filter w/ ProCal Voucher (11-14 GT)

Item 50288
Call a Mustang Enthusiast at 1-877-887-1105
M-F 8:30A-11P, Sat-Sun 8:30A-9P
Market Price $381.37 You Save 12% ($43.88)
Our Price


FREE Shipping

Will this fit your Vehicle?

Select a different vehicle Help?
Update or Change Vehicle
In Stock

Ship to: Ashburn - 20149
Sorry, please enter a valid US or CA postal code
We're sorry, zip can't be updated at this time.
    Create a list
    Add to New List

    Saved - View your saved items

    We're sorry. We couldn't save this product at this time.

      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • Up to 16 HP & 7 lb-ft of TQ
      • Improves Throttle Response
      • Includes K&N Air Filter & Pro-Cal Voucher
      • CARB EO Number: D-598-12
      • Fits 2011-2014 GT Mustangs


      More Power. Gain up to 16 horsepower and improve your GT's throttle response with a Ford Racing K&N Air Filter and ProCal Tuner Kit. This dyno-proven kit allows your Mustang to breath better for more power you can feel. Plus it is street legal in all 50 states.

      K&N Filter. K&N Drop-in Air Filters filter out harmful contaminants with it's unique layered design of cotton gauze that is sandwiched between two epoxy-coated aluminum wire screens for durability. K&N uses a specially formulated grade of oil to treat the cotton gauze layers to provide a tackiness throughout the cotton's microscopic strands creating a powerful filtering media that ensures engine protection.

      50 State Legal. Unlike the competitors, this Ford Racing Filter and Tuner Kit is 50 state emissions legal under CARB EO# D-598-12.

      This Ford Racing Air Filter and Tuner kit is designed to fit the 2011-2014 GT Mustangs equipped with either a Manual or Automatic transmission.

      Technical Note. Due to multiple power-train calibrations, online registration (with Ford Racing) is required to receive the ProCal calibration delivery tool after purchase.

      Fitment: 2011 2012 2013 2014 Details

      MPN# M-9603-MGTB

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (54)

      Write a Review

      Ratings Summary

      4.4 out of 5 overall rating from 54 customers

      • August 06, 2019

        5 2011 GT - AronR

        ProCal Tuner

        Instructions were clear and install was easy, only took half an hour. Pretty significant difference in the middle, great for street/daily driving. Even getting 1mpg better though that was the last thing on my mind. 93 octane and no issues at all.

        Helpful (0)
      • March 11, 2019

        5 2011 GT - Maddog

        2011 GT/CS

        Really easy to install and the car drives so much better. Much better throttle response and torque at lower rpm. Everyone should put this in their car.

        Helpful (0)
      • January 10, 2019

        5 2014 GT - Rodd Installation Time: Less than 1 Hour

        Ford Performance K N Air Filter w/ ProCal Voucher

        Easy DIY mod with noticeable gains and MPG fuel efficiency.

        Helpful (2)
      • November 14, 2018

        4 2017 GT - Morpheous

        Worked Well

        Getting the VIN verified with Ford was a little bit of a pain but everything worked out ok. Once applied (dealership) low end and mid range boost was great. Gas mileage took a bit of a hit but it was nothing unexpected.

        Helpful (2)
      • July 16, 2018

        5 2012 GT - PatrickP

        Solid product

        Installled as advertised. Gains were noticeable and the car drives much smoother now. I am glad I made the purchase, it really woke the car up.

        Helpful (4)
      • July 07, 2018

        3 2014 GT - D


        Seems to make my 14 auto run better just would better with a few more ponies

        Helpful (4)
      • March 07, 2018

        5 2012 GT - prizrak

        Exactly as advertised

        I mainly got this tune to get rid of skip shift and it did just that. The slightly improved throttle response is also a welcome addition and livened up the car somewhat.

        Helpful (6)
      • February 13, 2018

        4 2013 GT - DanM

        A Little Pinging

        Install went ok. It told me to hook up a battery charger even though my battery was showing 14 volts. Once I did that it was a piece of cake. Did get some pinging on the local California 91 octane going up a slight grade on the freeway near sea level. Fortunately the tool allows you to dial it back. There are also adjustments for tire size which I didn't know about.

        Helpful (5)
      • February 05, 2018

        3 2014 GT - SCVDriver

        Performance tune

        Easy install. Most noticable changes are the redline moving up and a slight increase in mpg. The torque at the lower rpm is not as prevelant but does shine through from a stop. Overall, its a good tune and is modest at best. If you want a CARB sticker/EO number and some small nuanced gains this is the tume for you.

        Helpful (6)
      • January 06, 2018

        5 2011 GT - Aclsallen

        Fun acceleration

        I am very impressed with Ford. Went on their website Wednesday on my lunch break and ordered my procal and when I got home from work Thursday it was here! Install went off perfectly. I like the extra torque down low it gives making driving fun!

        Helpful (5)

      Questions & Answers (18 answers)

      5 Top Rated Questions

      Ford Racing ProCal tuner and Select Shift Auto Transmission? Can this ProCal tuner be used on my 2013 GT Premium with the select shift auto transmission>?

      • The Ford Performance K&N Air Filter with ProCal Tuner will work with both Automatic and Manual transmissions.

      Helpful (6)

      Pro Cal Tuner I purchased the K&N filter a month ago. Can I purchase just the tuner?

      • Unfortunately, we don't carry the ProCal tuner available by itself. It would have to be purchased in a kit.

      Helpful (2) Show 1 more answer

      Would this work with my 2014 Mustang Gt with a CAI and BOSS 302 intake manifold?

      How does this tune effect the factory settings? Like sport mode and the traction control feature. Once the tune is installed does is override these features?

      Can I use this tune for the gt 350 manifold installation

      • The Ford Pro-Cal Tool will not help when converting your normal GT intake manifold to the GT350 Intake Manifold. A custom hand held tuner will be needed to make that conversion.

      Helpful (0)
      Post Your Question
      10 More Questions
      the ford performance Procal is this for a the specific year of the car ? mine is a 2012 but this unit can work on any Mustang 11-14? or do I need a number off the ECU? Thanks just want to cover all my bases 1 answer
      Does This tune also give a lopy idle along with the extra 60 lb/ft of torque at 1500rpm like the 2013-2014 tune? 1 answer
      I understand this kit comes with a K N filter for the stock air box but my car already has a K N series 63 CAI that was on it when I bought it. I should note it says on your website that the series 63 CAI is no tune required. My car has no other aftermarket mods. So will the K N CAI that I have on my car affect the Pro Cal tune in any negative way? 1 answer
      Can I use the ProCal tuner to adjust for a gear swap? I want to add 3.73s but not sure if that would work? thanks 1 answer
      If I wanted to forgo using the drop in filter and replace the stock air box with a CAI will the tune work in conjunction with a CAI that doesn't require a tune? For example, can I use the procal tune and a KN Blackhawk CAI? 1 answer
      Can this be used on a GT with an off-road x pipe? 1 answer
      Does this tune also Improved Engine Performance of Up to 60lb-Ft at 1500rpm? 1 answer
      Dumb question time. Does this tuner and other tuners like it need to stay plugged into the car to operate, or is it unplugged once the tune is set in the cars computer? 1 answer
      Is it normal for me to get a CEL after switching back to stock tune? I then switched to performance tune again but I still get the CEL, says "crankshaft position". The CEL wasn't there until I tried to switch back to stock tune and it's a 2011 GT with stock engine and just K N air filter. 1 answer
      Can it be used with a Throttle Body Spacer and/or Roush CAI? Can it be used with a Throttle Body Spacer and/or Roush CAI? If you have used it in combination how does it work out? 1 answer

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Air Filter
      • ProCal Voucher

      Tech Specs

      Will It Fit My Mustang

          Related Mustang Categories