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

Item 50099
AmericanMuscle no longer carries the Ford Performance 90mm Mass Air Meter / Sensor (96-04 4.6L). Please check out Ford Mustang Mass Airflow Meters and Sensors - MAF for an updated selection.
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    Review & Installation 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

    Product Information

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


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


    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.

    • 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: Details

    CA Residents: WARNING: Cancer and Reproductive Harm -


    Customer Reviews (36)

    Write a Review

    Ratings Summary

    4.5 out of 5 overall rating from 36 customers

    Installation Time: Less than 1 Hour

    Installation Cost: $500-$1000

    • November 04, 2018

      5 2003 GT - WesA

      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.

      Helpful (6)
    • September 14, 2018

      5 2004 GT - Terminator9904 Installation Time: Shop Install Installation Cost: $500-$1000


      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

      Helpful (16)
    • August 09, 2018

      5 1999 GT - MattO Installation Time: Less than 1 Hour

      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.

      Helpful (8)
    • August 01, 2018

      1 2000 V6 - GregG

      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.

      Helpful (7)
    • July 09, 2018

      5 1998 GT - GenaroP Installation Time: Less than 1 Hour

      Good product

      Perfect for boost, will have to buy a separate coupler

      Helpful (6)
    • June 15, 2018

      5 1998 GT - Pusher Installation Time: Less than 1 Hour

      Looks Great

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

      Helpful (6)
    • March 02, 2018

      5 1999 Cobra - ND99cobraguy Installation Time: Less than 1 Hour

      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

      Helpful (11)
    • January 25, 2018

      5 2002 GT - mustangkid0246 Installation Time: Less than 1 Hour


      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.

      Helpful (7)
    • January 25, 2018

      1 1997 Cobra - SeanK Installation Time: Full Day

      90mm maf sensor

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

      Helpful (9)
    • October 06, 2017

      1 2003 GT - LarryS

      No good

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

      Helpful (10)

    Questions & Answers (21 answers)

    5 Top Rated Questions

    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 (1)

    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 (1)

    I'm thinking about buying this to replace a pre-tuned bbk maf both due to the fact that I am having tuner issues with the bbk, and because I'm planning on switching to 04 aviator heads in a few months, and my next step after that is, of course, a large supercharger. I know this will be causing torque loss initially with my 96 sohc heads, but I do need to know if this comes pre-tuned for a certain size injector or if I have to get the size I end up using tuned in. I also want to know if this is the right connector because it's currently too cold for me to go out and check.

    Can I use this product with 47lb injectors if I get them both tuned since this is not pre calibrated?

    • As long as both calibrated with a tune these will work yes.

    Helpful (0)

    is there an adapter that will work for this for the oe 6 pin pigtail to the 4 pin plug on the maf

    • Unfortunately, at this time, we do not carry a 6 pin to 4 pin adapter for this MAF. We apologize for the inconvenience of this. 

    Helpful (0)
    10 More Questions
    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
    Im looking to buy a bigger MAF and injectors I like the ford racing MAF and the ford racing EV6 24lb injectors I was also wondering if the ford racing mass air meter comes with a sensor or is it just a housing The only upgrades I have done to my 98 GT is BBK pulleys msd coils BBK x-pipe BBK 78mm TB plenum and CAI Are these upgrades enough to upgrade the injectors and MAF 1 answer
    Im looking to purchase this item Just wanted to check and make sure the mass air flow housing comes with the ford racing sensor 1 answer

    Installation & What's in the Box

    Installation Info

    What's in the Box

    • (1) Mass Air Meter

    Tech Specs

    Will It Fit My Mustang

    • Bullitt - 01
    • Cobra - 96, 97, 98, 99, 01, 03, 04
    • GT - 96, 97, 98, 99, 00, 01, 02, 03, 04
    • Mach 1 - 03, 04

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