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Granatelli Motor Sports High Performance Slot-Style MAF Meter / Sensor; Calibrated (05-10 GT)

Item 393132
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      Product Information

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


      • Calibrated for Optimum Performance
      • Improves Performance from 2000 RPM to Red Line
      • Chassis Dyno Proven to Add 10 to 18 Horsepower
      • Improves Mileage and Throttle Response
      • 100% Increase in Airflow Over Stock
      • Direct Fit Plug-N-Play Replacement
      • Installs in Less than 15 Minutes
      • Sold Individually
      • Fits 2005-2010 GT and Bullitt Mustangs


      Calibrated for Optimum Performance. Did you know that the factory Mass Air Flow (MAF) Sensor could be holding you back from big power numbers? It doesn't matter if you have installed an aftermarket high flow cold air intake or a force induction set up, the simple problem is that the factory calibrated MAF Meter is limited and will "peg" because of too much air. It is just for these situations that Granatelli Motor Sports has custom scaled and calibrated their High Performance MAF Sensor to accurately read higher volumes of air to ensure optimum performance.

      Power and Performance. With a 100% increase in airflow over the stock sensor you can expect to see chassis dyno proven increases of 10 to 18 horse power with improvements in performance starting from 2000 rpm's all the way to red line. By installing a GMS High Performance Calibrated MAF Sensor you will not only see an improvement in power and performance, but you will also see an improvement in your fuel mileage and throttle response.

      Plug-N-Play Installation. Designed to be a direct fit plug-n-play replacement for the factory sensor this Granatelli Motor Sports Slot-Style MAF Meter installs with just basic hand tools. No extra modifications are required for an easy 15 minute installation. All necessary parts and instructions are included.

      Application. This Granatelli Motorsports Slot-Style MAF Sensor Meter is specifically designed to fit 2005 to 2010 GT and Bullitt Mustang models equipped with the Modular 4.6L 3 valve V8 engine. Sold individually.

      Fitment: 2005 2006 2007 2008 2009 2010

      Granatelli Motor Sports 80064619

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) MAF Sensor

      Tech Specs


      Customer Reviews (28)

      Write a Review

      Ratings Summary

      4.3 out of 5 overall rating from 28 customers

      Installation Time: Less than 1 Hour

      • November 28, 2019

        4 2006 GT - Alotto Installation Time: Less than 1 Hour

        MAF fix

        Just what my car was looking for. Stopped the surging in 1st and 2nd gear. Works good with my tune.

        Helpful (4)
      • October 10, 2019

        5 2007 GT - Marv21 Installation Time: Less than 1 Hour


        It’s good I can’t complain and seen good mph and performance play

        Helpful (3)
      • February 17, 2019

        4 2006 GT - TimothyB Installation Time: Less than 1 Hour

        Mass airflow sensor

        Easy install. I feel the difference at high speeds. And on acceleration. Well worth every penny .. Goes well with all my other bolt on mods

        Helpful (4)
      • November 25, 2018

        5 2008 GT - gsrandle Installation Time: Less than 1 Hour

        After 230K replaced stock MAF

        Works great, did not require a new tune and engine feels stronger across the rpm range.

        Helpful (7)
      • November 09, 2018

        1 2006 GT - BradenN


        Had a engine light on for my engine running lean, was told this would fix it but the light came back on within the next week. I’ve had the part installed the past 6 months with my call light still on. I experienced not ONE change in any aspect of my car. Waste of my money

        Helpful (6)
      • October 14, 2018

        1 2007 GT - CharlesG Installation Time: Less than 1 Hour


        This item did not work well for my car , now it's getting too much air and bogging down.

        Helpful (6)
      • October 11, 2018

        4 2010 GT - ZachK Installation Time: Less than 1 Hour

        It's an MAF

        Bought this pretty much just to have a new baseline and potentially more accurate monitoring while i set the stage for future induction upgrades. I have yet to notice any particular changes in performance or otherwise. Does what it is supposed to. Four stars until i get around to seeing how well it handles a force inducted system.

        Helpful (5)
      • August 25, 2018

        5 2009 GT - DaleL Installation Time: Less than 1 Hour

        Good Stuff

        Got this more for curiosity sake due to my car's OEM FoMoCo MAF sensor has never been replaced (has 144,000 mi on it...I cleaned it a couple of times during this time frame) and due to it being calibrated by GMS I wanted to see if any difference would show up. Took MAF readings from scan tool prior....OEM MAF read 5.14 g\s at full hot idle (Ford Racing Bullit 85mm CAI). Shut down, pulled OEM MAF sensor and installed GMS MAF sensor and started up fine. Allowed engine to go thru warmup to reach full hot idle then read scan tool.....GMS MAF read 5.75 g\s so gained .64 g\s air mass which dropped LTFT's a full 1 lean command on both banks (running slightly rich at idle but well within 10 of stoichometric 0 LTFT's w\ both STFT's switching across 0 using stock OEM tune at the moment). Took a test drive....all running normally w\ a very smooth idle. To make some pulls later to really see if any power changes. So far all is well and GMS MAF sensor is operating fine.

        Helpful (10)
      • August 02, 2018

        4 2009 GT - MiguelC Installation Time: Less than 1 Hour


        Good product could definitely feel it during take off and it also helps a little gas wise.

        Helpful (7)
      • July 21, 2018

        5 2006 GT - Memphis Installation Time: Less than 1 Hour

        Love it!

        Honestly I didn't think this GMS senor would do much but I'm a little bit surprised. It preformed better then I thought it would. Arguable one of the easiest mods you can ever do to your car and for a little over 200 dollars, I believe its worth it.

        Helpful (9)

      Questions & Answers (16 answers)

      5 Top Rated Questions

      How long is the warranty on this MAF ???

      • The Calibrated High Performance Slot-Style MAF Meter / Sensor is covered under a 90-Day Manufacture warranty.

      Helpful (3)

      I have several mods including CAI, throttle body, intake manifold, headers, X pipes, cams, and axle backs. All topped off with a Bama Tune. Will this MAF stop the pegging and allow my car to breathe the way I had hoped? I noticed a couple of the other MAF's mentioned pegging and rev limiting.

      • The GMS High Performance Slot-Style MAF Meter / Sensor - Calibrated (05-10 GT) will definitely eliminate the pegging because it is calibrated for a higher air flow. The factory MAF is only calibrated for a certain amount of airflow, that is why it will start to peg after some modifications have been done. This GMS MAF will help you get rid of that while freeing up some power.

      Helpful (1)

      Will this work on a supercharged Saleen?

      What is the difference between this product and the JET 69190?

      • Both are MAF sensors and generally will function all in the same way which is to help boost performance and fuel mileage. Depending on the manufacturer, the design may be slightly different, but the overall function will be the same.

      Helpful (0)

      So because Bama cannot create a tune for the MAF, does it hurt to put it on anyway after you already have a Bama Tune?

      • We would not recommend this as this was designed for use with the stock factory setup only.

      Helpful (0)
      Post Your Question
      10 More Questions
      Hello! I have a 2008 GT/CS with an aFe Silver Bullet throttle body spacer and a Saleen 98mm Cold Air Intake. Will this MAF Sensor work with the Saleen CAI throttle body spacer or shall I need a tune? Thanks in advance! 1 answer
      I have a Steeda CAI, Steeda under-drive pulleys, BBK shorty headers, Ford Racing 62mm throttle body, Ford Racing Manifold and Steeda tune for either 87 or 91 octane. Will this MAF help with throwing lean codes and the pinging? Also with throttle response? 1 answer
      My question is why is there no GMS performance mafs/sensor for S197 2005 v6 mustang out there or is there a way to re-program gms mafs/sensor for the v6 mustang like plug-n-play 1 answer
      I have a 06 GT with a Procharger P1 setup, along with long tube header, catted X pipe and a cat back exhaust along with a dyno tune. Will this MAF Meter hinder or help with the tune that is installed if I was to install it without a new tune? 1 answer
      I am running a CAI system and just installed a Bama performance tune. Will this MAF give me any more performance beyond this? 1 answer
      I'm running the bama performance tune would I need to retune my vehicle in order for this to work properly 1 answer
      I recently installed an Airaid race intake with a 91 octane Bama tune. I've notice that my stock MAF sensor can't keep up with the set up and pegs when I engage the clutch. Will this GMS MAF sensor work with this set up or is this specifically for stock/factory settings only? Thanks in advance 1 answer
      I know it only says this sensor is meant for GT models but can it be used on a V6 that has had some modifications? I can feel some loss of power in my car, I have checked multiple probable issue and have ruled them out so I'm going to try cleaning my stock sensor and if it doesn't work then I want to replace it with this sensor. 1 answer
      i have a 2010 Mustang 6 cil, it failed recently, The computer diagnosis say that was a failure of the maf sensor, some days later i bought a new maf sensor rebuilt, but my car continues to fail, and the car continues checking the engine light on the panel. the fails are: excesive black smoke, Motor without power, The car trembles a lot, Could this sensor stop all these faults? 1 answer
      I have an 08 GT/CS with a K N CAI, Flowmaster Axle back exhaust, GMS 62mm throttle body I am running a 91R Bama tune. 2 questions, will I need to get another tune after installing this? And will I notice any gains in power? Thanks. 1 answer

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