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Ford Performance 90mm Mass Air Meter / Sensor (96-04 4.6L)

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  • Item 50099

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    Features, Video & Details

    • Large 90mm Diameter
    • Flows More Air
    • 4 Pin Connection
    • Great for Custom Tune Applications
    • Fits 1996-2004 GT, Cobra, and Mach 1 Mustangs

    Review & Installation Video

    Review & Install Video

    Ford Performance's 90-millimeter Mass Air Meter is a great option for the '96 through to '04 two-valve owners out there that have more or less maxed out their current air intake setup with plenty of other air and exhaust mods like a cold air, intake manifold, throttle body, and headers. And, in my humble opinion, its huge MAF housing upgrade is really geared for forced induction applications. But in terms of the installation here, guys, this is getting an easy one out of three wrenches in the difficulty meter here, less than an hour of work with basic hand tools as it's merely just gonna be replacing your existing setup. So what exactly is this stack? Well, at face value, guys, it's a mass air meter, nothing nuts about that, and it's gonna go in between your air filter and your throttle body. But why would you want or, more importantly, need a bigger mass sensor? Well, the word "need" is key here, and, generally speaking, the stock MAF unit can only handle so much air. Now, when you've bought every other air and exhaust bolt-on available, or you're going forced induction, you're more or less adding too much airflow for the stock MAF unit, and that's where this upgrade comes in. And not only is airflow something that's key here, but having the right amount of fuel is another variable that you really need to pay close attention to. Your injectors will come into play here along with needing a tune, and, with that said, a tune is also really important here when installing this MAF unit, and this is something that we see our customers using with cars that are already being dyno-tuned. Now, either way, if you're the owner that's maxed out your naturally aspirated mods or you're looking into a turbo or a blower, this is going to be a must-have mod in order to avoid having your factory MAF pegged because of that increased flow. So the requirements aside, guys, you're looking at a quality Ford Performance takeoff here, and now this same MAF sensor is found on the blown SVT Lightning, and it's made from a rugged injection-molded body, which is gonna help reduce heat soak, which can be common on heavily modded or blown cars. Now, speaking of factory modification, this will need some wiring adjustments on the '02 through '04 GTs, the Machs, and the '03, '04 Cobra. Now, these models have the intake air temp sensor built right into the stock MAF. While this unit does not add an external IAT, it does need to be added so your ECU can look at the temperature to control timing accurately. But in terms of the pricing here, guys, expect to be sweated just about 130 bucks for this unit, and that is gonna be one of the most affordable MAF meters in this diameter at the time of shooting this video. And it's a small price to pay considering you'd likely spend a ton of money under the hood of your car with this helping you get that extra bit of power when it counts. Now, installation-wise, you're looking at a very straightforward one out of three wrenches on the difficulty meter here out of 30 minutes to an hour job. You will start with disconnecting the wiring harness for the factory sensor. You're gonna use the ratchet and socket set to unbolt the housing from your setup. Now, from there, swap over to the other side and use a flathead to unclamp the housing from the coupler. Now, you then wanna remove that completely and then swap it out with your Ford Performance 90-millimeter option. Replace the bolts, plug in your harness, tighten your couplers, and you're ready to go. This set's gonna wrap up my quick review and breakdown of Ford Performance's 90-millimeter Mass Air Meter/Sensor fitting the 1996 through 2004 4.6-liter Mustang that can be found right here at americanmuscle.com

    Flows More Air. AmericanMuscle now offers the Ford Racing 90mm Lightning Mass Air Meter. The Ford Racing 90MM Mass Air Meter is great for modified and custom tuned applications where the stock mass air meter "pegs" due to increased air flow.

    Application. This 90mm MAF from Ford Racing is a direct bolt-on replacement for 2000-2004 Ford SVT Lightning and will also fit the 1996-2004 GT, Cobra, and Mach 1 Mustangs, but will require custom tuning for proper results. Features:
    • 90MM MAF
    • Fits 1996-2004 GT, Cobra, and Mach 1
    • 4 Pin Connection
    • Requires a custom tune
    Technical Note. This MAF sensor will need some wiring adjustments for it to work properly on the 2002-2004 GT, Mach 1 and SVT Cobra Mustangs. These models have the Intake Air Temp (IAT) sensor built into their stock MAF while this Lightning MAF does not. An external IAT sensor needs to added into the intake tubing.

    Fitment: 1996 1997 1998 1999 2000 2001 2002 2003 2004 Details

    MPN# M-12579-L54

    CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

    What's in the Box
    • (1) Mass Air Meter
    Installation Info
    Tech Specs
    Will it fit my Mustang?

      Customer Photos (9) Submit Your Photo

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        Questions & Answers (23)

        5 Top Rated Questions

        Does the IAT sensor noted in the Technical Bulletin need to be rewired for an 01' Cobra, or is this a direct replacement? It just mentions 'SVT Cobra' and not sure of the specific years that require the rewire.

        Replaced stock injectors with 24 pound injectors in 2000 mustang gt. Had sct tuner and put in tune for injectors and 90mm lightning MAF. Engine would start and immediately go dead. Put stock MAF back on and engine run good. Does this have to be calibrated before installing? If so, where can you get it calibrated?

        I have an 03 GT with an Airraid CAI. I cleaned the MAF sensor with the proper cleaner today. Just to double check after I reinstalled, I started the car up and while running, I disconnected the plug. The car kept running! Does this mean that the MAF is bad? If so which one should I get for my car. It is stock other than the Airraid and the X Pipe/Flows in the back

        I have a 00 GT with pretty much all bolt-ons (Airaid CAI, 78mm bbk throtlebody and plenum, aluminum Professional Products air intake manifold, BBK long tube headers and 2.5 in diameter exaust all the way to the tips, 24lb inyectos, etc. I do have a SCT X4 tuner that does give you the option to change to a 90mm light maf but I do not have a dyno tune on it. Will it work for me?

        • The Ford Performance 90mm Mass Air Meter / Sensor will work on your Mustang with the required custom tuning.

        Helpful (0)

        Can BAMA tune for this MAF or do I need a Dyno?

        • Yes, you would be able to get a Bama tune with this 90mm Maf.

        Helpful (0)
        Post Your Question
        10 More Questions
        Can I use this product with 47lb injectors if I get them both tuned since this is not pre calibrated? 1 answer
        is there an adapter that will work for this for the oe 6 pin pigtail to the 4 pin plug on the maf 1 answer
        will this work for the 2001 bullitt with a custom tune from bama 1 answer
        My 2004 mustang 4.6 has a rough idle and i can hear a rumbling noise coming from the airaid cai. I have the cai, long tube headers, no cats, off road h pipe, accel coil pack sr performance 70 mm throttle intake but i am running stock mass air meter. would you recommend this part? 1 answer
        I have a 1999 Cobra w/ JLT Short Ram intake and BBK 65mm TB. Can I use this with this intake setup and can I add this to my Bama tune? If I cannot use the Bama tune then how will this work correctly? 1 answer
        This maf has only a 4 pin and my Gt has a 6 pin connector. How do you make it work? In the video it doesn't show you how to rewire it to work for GT's. It just shows the guy plugging in the connector to the maf. 1 answer
        I just purchased this for my 98 COBRA simply because I upgraded the entire air intake and the maf was trashed however the maf voltage is stuck at zero and when I unplug it the car remains running everything is hooked up correctly I believe my intake air charge temperature sensor is bad could this cause the issue and if not what do you believe I am dealing with ? 1 answer
        I need an adapter for the air filter side and can not seem to find one....... Any suggestions 1 answer
        would i be able to program this sensor with a bama tuner? 1 answer
        I have a 2004 mustang gt, 75mm BBK TB, BBK CAI. I am throwing a check engine light for intake air temp and the shop said that my IAT was built into the MAF and that my mass air flow sensor was actually bad and needed to be replaced. Will this have the IAT built in or will a need a separate IAT sensor? Yalls description is a little confusing. 1 answer

          Customer Reviews (36) Write a Review

          Overall Rating 4.5

          out of 5 stars

          Installation Time:Less than 1 Hour

          Installation Cost:$500-$1000

          • Performance Gain 4.142857 4.1
          • Fit 4.25 4.3



          • 5/5

            November 04, 2018

            Great product

            It really fixed my idle problem that can bind with the custom tune they wrote really finished off all the things I did to my car.

            WesA

            Year: 2003 Submodel: GT

            Helpful (5)

          • 5/5

            Installation Time: Shop Install

            Installation Cost: $500-$1000

            September 14, 2018

            Great

            Adds about 150hp I put it on But I also take the air filter off so the air intake gets a lot of airflow since it’s a 90mm I also have a bbk78mm tb full bolt on. It even shoots flames like a gtr. It breaks a lot of necks all because of this 90mm MAF

            IownA20181LE

            Year: 2004 Submodel: GT

            Helpful (13)

          • 5/5

            Installation Time: Less than 1 Hour

            August 09, 2018

            90 mass

            Very easy to put on took like 10 min or less. An with it being tuned be bama it make the car run an shift clearer. I can tell the difference from before.

            MattO

            Year: 1999 Submodel: GT

            Helpful (7)

          • 1/5

            August 01, 2018

            Wrong size

            Part was good size was wrong. It would be nice to have the air intake linked up in a package deal, with the right mass air flow sensor. And adapter.

            GregG

            Year: 2000 Submodel: V6

            Helpful (7)

          • 5/5

            Installation Time: Less than 1 Hour

            July 09, 2018

            Good product

            Perfect for boost, will have to buy a separate coupler

            GenaroP

            Year: 1998 Submodel: GT

            Helpful (6)

          • 5/5

            Installation Time: Less than 1 Hour

            June 15, 2018

            Looks Great

            Should complement my 98GT build nicely as my intake is huge.

            Pusher

            Year: 1998 Submodel: GT

            Helpful (6)

          • 5/5

            Installation Time: Less than 1 Hour

            March 02, 2018

            Works great

            I have a 1999 Mustang Cobra and it worked with my old cold air intake and it works with the jlt Next Generation cold air intake and the jlt Next Generation cold air intake Works underneath the front strut brace on a 1999 Cobra. The jlt Next Generation cold air intake comes with the correct adapter for the 90 mm maf sensor

            ND99cobraguy

            Year: 1999 Submodel: Cobra

            Helpful (10)

          • 5/5

            Installation Time: Less than 1 Hour

            January 25, 2018

            02GTMassAir

            I bought this along with a JLT CAI. was a little hard to find a cupler to fit over the ends and it definitely makes a difference in air flow when paired with other intake parts.

            mustangkid0246

            Year: 2002 Submodel: GT

            Helpful (7)

          • 1/5

            Installation Time: Full Day

            January 25, 2018

            90mm maf sensor

            Did not fit my application like intended by the company... Horrible do not buy for 96-98 Cobra.

            SeanK

            Year: 1997 Submodel: Cobra

            Helpful (9)

          • 1/5

            October 06, 2017

            No good

            Part did not fit know one sold a sleeve for it so I sent it back

            LarryS

            Year: 2003 Submodel: GT

            Helpful (10)

          • 5/5

            Installation Time: Less than 1 Hour

            September 12, 2017

            90 mm maf

            Great product solved idle issue! Drives great with custom tune. Thx am!

            Unique

            Year: 2003 Submodel: GT

            Helpful (9)

          • 5/5

            Installation Time: Afternoon

            August 21, 2017

            Works great!!!!!!!!

            This maff works great I'm recommend!!! More air more power respond!;;

            Mustang

            Year: 1999 Submodel: Cobra

            Helpful (8)

          • 5/5

            Installation Time: Less than 1 Hour

            June 21, 2017

            Nothing Like a Good Ford Part

            I had trouble getting a good quality replacement at the local auto parts store. This item really does the trick for a very comparable price. I should have got it in the first place!

            Mkaynorman

            Year: 2003 Submodel: GT

            Helpful (8)

          • 5/5

            Installation Time: Less than 1 Hour

            March 14, 2017

            Worth It

            Installed with JLT Short Ram and 78 mm bbk throttle intake. Great purchase!!

            XavierT

            Year: 1998 Submodel: GT

            Helpful (10)

          • 2/5

            Installation Time: Afternoon

            December 28, 2016

            Not a direct fit for 1999 cobra

            I have a 1999 cobra with a stock air box connected to my stock throttle body. This MAF does not slide into the existing tube going to the throttle body. Actually it is the same size diameter and not larger like it should be to slip over the tube going to the throttle body. I had to buy a larger rubber adaptor to slip over both and then tighten it down with clamps.

            woody

            Year: 1999 Submodel: Cobra

            Helpful (8)

          • 4/5

            September 01, 2016

            Great price!

            Fits perfect and looks stock. I installed the meter in less then a hour. This 90mm Mass Air Meter/Sensor does not come with gasket where you mount to the air box. You will also need to purchase a 4" coupling to 3.5" if you have a Airaid cool air intake. Over all great price and a great product.

            RunUovR

            Year: 2000 Submodel: GT

            Helpful (9)

          • 5/5

            August 18, 2016

            Mass air flow

            Awesome product for my 02 saleen mustang runs stronger!

            Hammerhead

            Year: 2002 Submodel: GT

            Helpful (8)

          • 5/5

            Installation Time: Less than 1 Hour

            June 10, 2016

            ford racing 90mm maf.

            best bang for the buck out there in an upgraded maf, as you increase performance, pegging your maf at 5 volts, the motor will go lean. And that’s bad emmm-k. Generally speaking the stock maf is good to about 300 hp, the 80mm maf 350-375, ish and the 90mm lighting maf will peg around 450 hp. Its best to size your maf a bit larger than intended hp, but not too much, as you give up resolution, you still only have a 5 volt max to the ecu. NOTE, Any Ford MAF as well as the SCT MAFs are NOT calibrated for any injector size. The injector size is set in the ECU. I have found, as well as other smarter than me, that this ford racing 90mm maf will make a great smooth transitions with 4" air cleaners and ram air or cold air intakes such as jlt, and the bbk 79mm throttle body/pethum it will neck down to 3" increasing velocity into the intake manifold. this set up has been used to good effect in many motors. Absolutely requires a tune, mass air transfer function is about the most important part of the tune.

            chip

            Year: 2001 Submodel: GT

            Helpful (12)

          • 5/5

            June 06, 2016

            90mm MAF

            Perfect fit for my 98 cobra\application! I was able to achieve the power I was lookibg for with this MAF!

            Cobra

            Year: 1998 Submodel: Cobra

            Helpful (11)

          • 5/5

            Installation Time: Less than 1 Hour

            May 26, 2016

            Great Air Flow

            Works just as described, great air flow, looks great!

            Tracy

            Year: 2002 Submodel: GT

            Helpful (8)

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