WIN $5,000 For Your Mustang! Enter Now
Talk to a Mustang Expert
1-888-332-7930
Mon-Thu 8:30a-11p, Fri-Sun 8:30a-9p

Free Shipping on Everything. Seriously. Details

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

Market Price $159.84 You Save 7% ($10.87)

$148.97

FREE Shipping
  • Item 50099
  • MPN# M-12579-L54

In Stock Ships same business day. Choose options to add to cart

Features & Details

  • 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. 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

What's in the Box
  • (1) Mass Air Meter
Installation Info
Will it fit my Mustang?
  • Bullitt - 01
  • Mach 1 - 03, 04
  • Cobra - 96, 97, 98, 99, 01, 03, 04
  • GT - 96, 97, 98, 99, 00, 01, 02, 03, 04

Most Helpful Reviews

5/5
90mm MAF

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

Helpful (1)

5/5
Great Air Flow

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

Helpful (1)

Overall Rating 4.9 out of 5 stars
Read All 21 Reviews

Customer Photos (9) Submit Your Photo

View All 9 Photos

You Might Also Like

9 Questions / 8 Answers

Ask a Question

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?

myron

  • These models have the Intake Air Temp (IAT) sensor built into their stock MAF while this Lightning MAF does not.

    Ragmil

    Good Answer (1) (0)

Show 1 more answer Answer This Question I need this answered (0) (0)

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.

Lobout

Answer This Question I need this answered (0) (0)

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.

BigDogg78

  • no just needs to be calibrated for your injectors

    stvn

    Good Answer (0) (0)

Show 1 more answer Answer This Question I need this answered (0) (0)

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.

Jscrew

  • I do apologize about that, the Ford Performance 90mm Mass Air Meter / Sensor is meant for racing applications for as much air flow as possible. I do not believe this item will solve the problem you are facing. I would recommend one of the BBK Mass Air Meters, which one you go with will depend on what size injectors you plan on using.

    SalC7

    Good Answer (0) (0)

Question Resolved

Im looking to purchase this item Just wanted to check and make sure the mass air flow housing comes with the ford racing sensor

fastpony

  • The Ford Performance 90mm Mass Air Meter / Sensor comes with the sensor and the housing as a package.

    AMJEFF

    Good Answer (0) (0)

Question Resolved

would this fit in my 98 cobra along with a bbk cai or does it not fit aftermarket cai's?

JeremySparky98

  • It should fit with no major issues on your car. You will gain the most improvement if you add the larger throttle body as well.

    Wildhorse1

    Good Answer (0) (1)

Answer This Question I need this answered (0) (0)

More Products You Might Like

Customer Reviews (21) Write a Review

Overall Rating 4.9

out of 5 stars

Installation Time:Less than 1 Hour

  • Performance Gain 4.307693 4.3
  • Fit 4.461538 4.5



  • 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 (1) (0)

  • 5/5

    August 18, 2016

    Mass air flow

    Awesome product for my 02 saleen mustang runs stronger!

    Hammerhead

    Year: 2002 Submodel: GT

    Helpful (1) (0)

  • 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 (1) (0)

  • 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 (1) (0)

  • 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 (1) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    August 18, 2014

    90mm Mass Air Flow Meter

    This took about 15 min to install with basic tools. I did have it tuned just with my handheld. I could tell the car was sucking a lot more air. The Rpms were going up faster than with the factory mass air meter. Now for the overall horsepower gain I don't really know. I could tell a difference in the torque more than anything. But like I said it was a good purchase. If your car needs more air. This is a great way to do it.

    JRed98

    Year: 1998 Submodel: GT IL

    Helpful (1) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    April 30, 2014

    Esily adaptable to my Fox

    If you adapt this to your fox, you no longer have to match injectors. Another must have for my RPM II intake swap

    347Tony

    Year: 1992 Submodel: Other Philly

    Helpful (1) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    February 03, 2014

    90 MAF

    i had to buy a AIT from wrecking yard off a 98 mustang and cut the 2 outside wires on maf rewire AIT to it to hook it up. Shud come with one for the high price. need a tune rite away gives alil better throttle response.

    Mlcobra18

    Year: 2002 Submodel: GT Sparks, NV, USA

    Helpful (1) (0)

  • 5/5

    August 25, 2009

    Awesome

    This combined with the BBK Twin 65mm Throttle Body gave my 98 Cobra SOOOO much more low end torque!! This definitely lets the engine suck in a whole lot more air!

    Kyle

    Year: 1998

    Helpful (9) (0)

  • 5/5

    April 07, 2010

    Awesome

    I installed this MAF with the BBK 65mm throttle body on my 2001 Bullitt, the low end is awesome. Much better throttle response too.

    Carl

    Year: 2001

    Helpful (7) (1)

  • 5/5

    October 14, 2010

    90mm lightning meter

    Make sure to get 39lb/42lb injectors with this product otherwise it's worthless to buy, you should also get the throttle body upgraded too, I had a performance shop install it & Dynotuned my car, no major gains maybe 4-5hp

    Paul Kayal

    Helpful (19) (10)

  • 5/5

    Installation Time: Less than 1 Hour

    July 17, 2015

    TRUE LOW END TORQUE GAINS CRISPER RESPONSE

    I really don't know where to begin. I have a mildly modded 00' GT ALL BOLTONS comp cams 270's and 125 shot of nitrous. After the install the response of the thottle was very much improved and noticeable. Although tuned by BAMA, my rpm's were set at 770 so my car would drop too low in rpm's to where it would shut off when idling. This was ok because I know my car and am familiar with the SCT tuner so I simply reset my rpm's to 900 right where they need to be in order to keep the car at a nice steady idle. Tune is great and the 90 mm FR maf is truly worth every penny. Car makes 430 HP / 414 toque and putting down 355 RWHP to the wheels on a 125 shot of nitrous. The car now runs as it was meant to do. Very pleased with this lighting maf and I recommend it to any 4.6L owner who's modified their car.

    JohnW81

    Year: 2000 Submodel: GT calgary, AB

    Helpful (1) (0)

  • 4/5

    Installation Time: Less than 1 Hour

    May 25, 2012

    90 mm lightning MAF

    it was a bit of a pain to install, needed a bigger sleeve to attach the intake to it. but overall good quality upgrade for your stang I don't think this improves overall horsepower but I definitely feel a quick response from the throttle, I'd equate this gain similar to when I first installed my new throttle body. so I'm pleased.

    Jdwasher42

    Year: 2001 Submodel: GT Indianapolis, IN, USA

    Helpful (1) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    February 01, 2012

    Every mustanger owner should get this!

    My old mafs had a crack on the top so I end up replacing it with this one. Ended up with a way better response time and gain about 5hp after tuning my car. Great product, worth the money and very fast shipping, thank you american muscle.

    Shadow

    Year: 2000 Submodel: GT Tx

    Helpful (1) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    February 28, 2013

    Nice

    Installed this along side an SR performance CAI. I should have read a little more but due to the size of this MAF meter it was not designed for my CAI. I was however able to manipulate the CAI connector hose to fit onto the clamp side of the MAF meter allowing it to connect. I cannot comment on the performance side accurately as I need a tune to truly get the benefit of the larger MAF meter. All my parts were stock so there is some slight increase in performance but I can only say that this may be from installing new parts, again I need a tune. Overall this thing is huge and definately lets a lot more air through, but the gain in volume is restricted by the diameter of the CAI tubing to the throttle body.

    JonnyReb

    Year: 2000 Submodel: GT Martin, Ga

    Helpful (1) (1)

  • 5/5

    July 16, 2011

    Does not fit

    This size mass air meter does not fit on the JL cold air intake for the 2001 Bullitt, but there's no disclaimer that says that.

    Suz

    Year: 2001 Submodel: Bullitt

    Helpful (4) (4)

  • 5/5

    March 31, 2011

    Ford Racing 90mm

    Easy install...I did it in the parking lot of a.s.a.p performance 15 minutes...Only thing they forgot to tell me about is that you need a air temp sensor to install also...

    Anthony

    Year: 2002 Submodel: GT

    Helpful (2) (3)

  • 4/5

    Installation Time: Less than 1 Hour

    September 15, 2011

    02 - 04

    I didn't know before purchasing but this MAF does not have a air intake temp sensor, caused my car to run rich and various other annoying problems. Make sure you find said sensor male and female part to make this product help your car run properly

    NLaw

    Year: 2002 Submodel: GT TX

    Helpful (4) (6)

  • 5/5

    March 11, 2011

    Great MAF!

    Great product, excellent customer service and super fast shipping - what more could a gear head ask for? Thanks AM!

    Doc

    Year: 1997 Submodel: Cobra

    Helpful (2) (4)

  • 5/5

    Installation Time: Less than 1 Hour

    February 14, 2015

    Decent productt.

    I have a air raid intake and the coupler provided wouldnt fit on the MAF.....that was frustrating but overrall nice product.

    Dickbob

    Year: 2004 Submodel: GT Rockton, IL

    Helpful (0) (1)

Related Mustang Categories