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

Market Price $164.99 You Save 12% ($19.02)
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$145.97

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  • Item 50099
  • MPN# M-12579-L54

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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

    CA Residents: Warning: California's Proposition 65

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

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    Questions & Answers (18)

    5 Top Rated Questions

    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)

    will this work for the 2001 bullitt with a custom tune from bama

    • Yes, this part will work with your 2001 Bullit Mustang with a custom tune from BamaPerformance. 

    Helpful (0)

    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?

    • The Ford Performance 90mm Mass Air Meter would not be required for your setup, as this part will require a dyno tune, and the OEM MAF can handle around 600hp. There are a number of causes that could create the issue you are seeing, from a vacuum leak to a failed or dirty MAF sensor and a number of other concerns.

    Helpful (0)

    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?

    • Yes, this will work with the JLT Short Ram, and Bama Performance would be able to provide a custom tune!

    Helpful (0)
    Post Your Question
    10 More Questions
    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
    Will this item work well with my setup? I have a 2000 gt with a new PI 4.6 engine. BBK high flow fuel rails, ford racing intake manifold, trickflow 75mm throttle body, and CAI, 30lb injectors. bama tune. I believe that I am currently maxing out the stock MAF, and am looking for something to correct that situation. 1 answer
    Why 4 pin connector? My 2002 GT has a 6 pin connector but the replacement sensor I bought from anither source only has 4 pins. I checked the voltage across pins 1 and 6 and it was 4.4v Those two pins control the integrated IAT sensor. Now I get a check engine light with P0113 code. IAT too high. If stock 2002 GT's have a 6 pin connector why are the sensors sold with a 4 pin? 2 answers
    Does this Mass air meter require larger injectors? I have a 96 Cobra with a C&L 80mm mass air, BBK twin 62mm throttle body, cold air intake and stock 24lbs injectors/fuel system. With an upgrade to this mass air meter is an injector change or fuel system upgrade needed to see the benefit of the larger mass air meter? I have no plans for power adders, or building the motor up, just looking for some showoff power and torque numbers, and enough gettyup to do something stupid with. 2 answers

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    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 (0)

    • 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 (2)

    • 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 (1)

    • 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 (1)

    • 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 (2)

    • 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 (1)

    • 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 (4)

    • 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 (3)

    • 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 (5)

    • 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 (5)

    • 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 (5)

    • 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 (4)

    • 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 (3)

    • 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 (5)

    • 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 (4)

    • 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 (4)

    • 5/5

      August 18, 2016

      Mass air flow

      Awesome product for my 02 saleen mustang runs stronger!

      Hammerhead

      Year: 2002 Submodel: GT

      Helpful (4)

    • 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 (7)

    • 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 (7)

    • 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 (4)

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