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Thread: 93 Cobra MAF myth?

  1. #1
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    Default 93 Cobra MAF myth?

    Ok who here can prove or disprove this. I have done some searching and have come up with 2 *facts* regarding the 93 Cobra 70mm MAF:

    1. The MAF is calibrated the same as the stock HO 55mm MAF (ie for 19 lb/hr injectors) and the only reason that the Cobra computer handles 24lb/hr injectors is because the computer is programed to, not the MAF.
    2. The 93 Cobra MAF is calibrated to 24lb/hr injectors.

    So which one is right? The reason I ask is I have access to a 93 Cobra MAF for cheap (ie FREE ) but I don't want to get it if it won't work with my 19lb/hr injectors. I know a 70mm MAF from a 92-94 Vic, GM, or Town Car works but I have to grind down the mounting flange, where as the 93 Cobra one bolts right in.....
    '88 Thunderbird LX: 306, Edelbrock Performer heads, Comp 266HR cam, Edelbrock Performer RPM intake, Edelbrock 70mm TB, 76mm C&L MAF, 30lb injectors, 2.5" exhaust, AOD with 2800 PI converter, 8.8 with 3.73 gears, 31 spline Traction-Lok, 31 spline Moser axles, 04 Cobra front arms, Maximum Motorsports extreme duty rear arms, subframes.
    '11 Focus, '12 Mustang 3.7, '17 Accord EX-L V6

  2. #2
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    For all Fords the PCM is programmed to work with a specific MAF. The MAF has a unique transfer function (mass air flow vs. voltage) that is programmed into the PCM. A lot of companies like Pro-M have founds ways to calibrate their larger bore MAFs to perform like the stock MAFs without the airflow restriction.
    1988 Thunderbird
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    Get the Cobra, swap the electronics...(guessing this will work, should be no problem if the internal configuration is same)...

    The Cobra MAF has a unique calibration, can only be used with the matching Cobra EEC....






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    Quote Originally Posted by TurboCoupe50 View Post
    Get the Cobra, swap the electronics...(guessing this will work, should be no problem if the internal configuration is same)...

    The Cobra MAF has a unique calibration, can only be used with the matching Cobra EEC....
    That sounds like a plan. Since it's free what the heck. I was going to swap the electronics anyways.

    Also from what I've been reading the MN-12 5.0 guys swap in the 70mm MAF housing from 94-95 3.8 and 4.6 T-birds. Since I have a 3.8 T-bird sitting around I might try it to see if it works in a FOX.
    '88 Thunderbird LX: 306, Edelbrock Performer heads, Comp 266HR cam, Edelbrock Performer RPM intake, Edelbrock 70mm TB, 76mm C&L MAF, 30lb injectors, 2.5" exhaust, AOD with 2800 PI converter, 8.8 with 3.73 gears, 31 spline Traction-Lok, 31 spline Moser axles, 04 Cobra front arms, Maximum Motorsports extreme duty rear arms, subframes.
    '11 Focus, '12 Mustang 3.7, '17 Accord EX-L V6

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    Quote Originally Posted by thunderjet302 View Post
    Also from what I've been reading the MN-12 5.0 guys swap in the 70mm MAF housing from 94-95 3.8 and 4.6 T-birds. Since I have a 3.8 T-bird sitting around I might try it to see if it works in a FOX.
    They're screwin' up then... My '95 LX ran rich as Hell(cold, it blew black smoke like a Diesel) on a 55mm 5.0 meter, which tells me a 70mm would be lean on a 5.0...

    Went to U-Pull-It and got a meter from a 94 3.8, ran fine...






    My other rides (that actually do run & drive)

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    I have got 70mm on mine.No smoke,but my exhaust tips are all nice and black and nasty.Do you think the 55mm would be better?Would the '94 3.8 meter be better,and finally,is there another Ford with a meter like the '94 3.8?
    '88 Sport--T-5,HURST shifter,TMoss GT-40 intake,Ed Curtis cam,Trick Flow heads,Scorpion rockers,70mm t-body,3G,mini starter,Taurus fan,BBK headers,O/R H-Pipe, Flowamaster 40's, deep and deeper Cobra R wheels,Mass Air, Mass Air and 24's,8.8 with 3.73's,140 mph speedo,Mach 1 chin spoiler,SN-95 springs,CHE control arms,aluminum drive shaft and a lot more..

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    Quote Originally Posted by vinnietbird View Post
    I have got 70mm on mine.No smoke,but my exhaust tips are all nice and black and nasty.Do you think the 55mm would be better?Would the '94 3.8 meter be better,and finally,is there another Ford with a meter like the '94 3.8?
    Hey Vinnie, I wouldn't recommend downsizing your meter. Your setup is close to mine and it feels stronger with the 73 compared to the 55. I have the slight blackness in the tailpipes that you mentioned but other than that everything's peachy. Just for sh*t's and giggles I'd like to dyno the car and compare the two meters side by side.
    http://www.fquick.com/slicksport88
    88 Sport - 5.0HO, Mass Air, A9L, 73mm C&L meter, BBK CAI, 255 lph pump, 1.7 roller rockers,Professional Products damper, Chuck W motor mounts, BBK shorties & H-pipe, Flowmaster 40 series, 8.8 rear w/3.27's, 93 Cobra M/C, BAER 13in. drilled/slotted rotors front and back, cobra calipers, Russell braided brake lines front & back, C/C plates, 03cobra rims, 255/40/17 Nitto 555's all around

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    Quote Originally Posted by TurboCoupe50 View Post
    Get the Cobra, swap the electronics...(guessing this will work, should be no problem if the internal configuration is same)...

    The Cobra MAF has a unique calibration, can only be used with the matching Cobra EEC....
    Not true - anybody can use the 70mm with a tuning device. The 93 Cobra meter should make an A9L car run a bit leaner up top, about the same at & just above idle.
    11.96 @ 118 MPH old 306 KB; 428W coming soon.

  9. #9
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    Or you could just get a C & L and be done with it.....Room to grow later....Stock electronics.

    If you really want to swap stuff around though, here's the cross reference chart again: http://www.graphicsdept.com/walbro/p...mass/forda.htm

    The Cobra meter was designed for 24's....I've never actually held a stock cobra housing (not that I'm aware of anyway). Any difference in the metering tube sized between it and say a 94-95 GT meter housing?

    http://www.superstang.com/maf.htm
    http://www.modularfords.com/forums/s...ad.php?t=61987
    http://forums.corral.net/forums/show....php?p=7661057
    Last edited by V8Demon; 07-09-2008 at 11:28 PM.
    -- 05 Mustang GT-Whipplecharged !! -- 87 5.0 Trick Flow Heads & Intake - Custom Cam - Many other goodies...3100Lbs...Low12's! http://www.fquick.com/V8Demon

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