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#1 |
Registered Member
Join Date: May 2003
Location: nc
Posts: 13
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![]() Loose that restrictive stock MAF meter (56mm) on a tight budget.....Go to your local junkyard and get a 73mm MAF meter from a 3.8 cougar or t-bird. they are easy to spot the sides are not dimpled like the stock 5.0's. And for even better flow cut the center bar out and file smooth. Drill out the sensor tube to 15/32" and use your stock electronics. You will have 85mm going in and 73mm out. I bought them for about $20.00 and about 20 minutes of cutting filing and drilling. Stock look with performance feel at a fraction of the cost.
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#2 |
Dirk Diggler
Join Date: Feb 1999
Location: SLOATSBURG, NY
Posts: 1,931
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![]() awsome tip!
how is it holding up..car runs normal or lean/rich?
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95 undecided cubes, AFR 185s,undecided cam, undecided intake, and a 150 hit 89 "turbonotch" 2.3T You might want to hold on..i saw this on a cartoon once |
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#3 |
Registered Member
Join Date: May 2003
Location: nc
Posts: 13
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![]() I have not had any problems at all. I have a stock 5.0 motor with a Kenne Bell supercharger and I went from 14.1 @ 102.4mph with the stock MAF to 13.7 @ 104.6mph with this upgrade. There is a guy trying to sell the housings on Ebay from $75.00 each.
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#4 |
Registered Member
Join Date: Feb 2003
Location: Minturn, CO 81645
Posts: 109
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![]() How does the the computer know how to recalculate for the changes since you have gone to the new MAF? Doesn't the computer expect the MAF to be a 54. Don't the after market MAF give less restriction and fake the EEC-4 into thinking they have a 54 by doing the recalculating. I thought I heard some where what you just did was make your engine go lean to fast.
That is why 93 cobra used a different computer. Mountain Main. |
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#5 |
Registered Member
Join Date: Jun 2003
Location: O'Fallon, MO
Posts: 32
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![]() It doesn't. This mod isn't such a good idea. Especially the shaving of the post. All that will do is lean out your fuel mixture, causing unnecessary long term damage.
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----------- Adam M. Bullard 1994 Ford Mustang GT ![]() Too many mods since last E.T. http://www.geocities.com/adam94gt |
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#6 |
Registered Member
Join Date: May 2003
Location: nc
Posts: 13
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![]() This allows air to flow better. Your calibration stays the same. Name for me then one after market company making a MAF sensor with a center post. Also look them up ,please, and tell me then why can you buy from C&L, Pro M,,......... a 73 mm MAF sensor calibrated for 19lb injectors. I would just love to here your answer! And actually Kenne Bell recomends an 80mm MAF cal. for 19lb injectors w/ a 75mm throtle body and EGR spacer.
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#7 |
Registered Member
Join Date: Jun 2003
Location: O'Fallon, MO
Posts: 32
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![]() Pro-M and C&L make meters that are calibrated for the cross-sectional area that the air has to flow through. Factory meters which included the post are not calibrated for the area without the post. So there will actually be more air flowing through a stock meter with the post removed than the meter believes. This means there is more air flowing than the fuel system will be providing for, this should be fairly easy to understand. This leans out your mixture, and I'm sure you know what leaning it out does.
On another note, does anyone know what size a factory '94 Mustang 5.0 MAF is? I tried measureing the inlet mouth and came up with 80mm but that seems a little big for stock. Even with the post.
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----------- Adam M. Bullard 1994 Ford Mustang GT ![]() Too many mods since last E.T. http://www.geocities.com/adam94gt |
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#8 |
Registered Member
Join Date: Aug 2002
Location: SanAntonio, Tx
Posts: 957
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![]() My vortech housing accepts the stock sensor, why wouldnt it work?
It will simply tell the computer there is more air entering the engine, MAYBE CUZ THERE IS! ![]()
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X-Texas highway patrol ssp 1990 coupe - exploder Gt-40 iron heads, Explorer intake, 19 lber's. E-cam. crane 1.7 rollers. 190fp. 75mm maf. 65mm tb, tubular subframe connectors, mac cai, Asp crank pulley, T-5, king cobra clutch, flowtech 1-5/8 unequals, mac X-pipe Frpp driveshaft, lakewood Lca's. race weight 3,160 12.69 @ 107.35, 1.71 60' 26x8.5 drag's 3.90 gear 13.20 @ 106.91 - 235/60/15 firestones 2.3 60' 3.27 gear |
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#9 |
Registered Member
Join Date: Jun 2003
Location: O'Fallon, MO
Posts: 32
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![]() I guess it just can't be explained to you
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----------- Adam M. Bullard 1994 Ford Mustang GT ![]() Too many mods since last E.T. http://www.geocities.com/adam94gt |
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#10 |
Registered Member
Join Date: Aug 2002
Location: SanAntonio, Tx
Posts: 957
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![]() I guess not.
Maybe it's a bit more complicated, than a housing that air flows through, and a sensor. ![]() |
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#11 |
Registered Member
Join Date: Apr 2001
Location: Staging lane
Posts: 4,337
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![]() I have known about this mod for years and yes it does work.
Dyno proven Baby!!!!!!!!!!!!!!
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92' LX-Big brakes, Lots and lots of suspension, GT40X heads, Ported cobra intake, stock cam, Vortech SC trim. 00' Lightning-Stock 88'CRX-13 second ego killer |
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#12 |
Registered Member
Join Date: May 2003
Location: nc
Posts: 13
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![]() ADAM WHAT DO YOU THINK A SUPERCHARGER DOES? It forces more air into the cylinders and raises the compresion. The post in the center... What do you think that does? Its about as useful as the factory silencer on the air box. Oh wait based on your logic removing that may cause long term damage it alows the engine to breath easier. So I guess if you use bigger veturis on a carb motor you will cause the same problem as well?
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#13 |
Registered Member
Join Date: Jun 2003
Location: Novinger, Mo
Posts: 72
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![]() I believe the stock MAF on 94-95 is 70mm. Also I cut the center post out of mine, bumped up the fuel pressure, and keep an eye on my A/F ratio. And haven't had the CEL come on as of yet.
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95 GT w/ AODE and Transgo Shift kit, trans cooler, SpeedCal, KB 1.5 Flowzilla w/ 6# pulley, MAC chrome CAI, chrome radiator hoses, stock MAF w/ center post removed, 70mm PP TB, electrical boost & FP gauges, digital A/F gauge, 1 5/8" unequal headers, 2 1/2" ProChamber h-pipe, Borla catback exhaust, and 3.55's. Cobra RR hood, Saleen double wing, Xenon body kit, chrome Cobra R wheels 17X8 in front and 17X10.5 in the back. |
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#14 |
Registered Member
Join Date: Jun 2003
Location: O'Fallon, MO
Posts: 32
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![]() That's exactly what you should do if you remove the post, raise fuel pressure.
In case the rest of you didn't know, a MAF measures airflow by the air that blows into the tube itself and cools the thingy in there, it then sends a certain voltage to the computer depending on how cool it is. The computer figures the post is in the way (Not exactly like that, but it is calibrated for having the post) and thinks so much air is flowing through the rest of the meter which isn't directly measured by it, without the post, more air is flowing than the computer believes is flowing through, and not as much fuel is being sent that should be sent. Causing a lean condition. In case you twerps (Shouting at me, you had it coming.) didn't know, leaning the mixture can raise HP, but at the same time can cause long-term damage to your engine. So not only are you gaining HP from more airflow, but from a leaner mixture. 2tone, superchargers and other performance mods don't alter your EECs measuring devices, so it knows to add more fuel to match the increased airflow. But if gaining performance at the cost of potentially harming your engine is your thing. Then more power to you, it's not my car. Sorry I cared.
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----------- Adam M. Bullard 1994 Ford Mustang GT ![]() Too many mods since last E.T. http://www.geocities.com/adam94gt |
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#15 |
College Stanger
Join Date: May 1999
Location: Aiken,south carolina, usa
Posts: 1,097
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![]() What year cougar/T-bird? Does it have to be the supercopue or just the 3.8L? Will you have problems if you do not cut the post out? What if you just keep it at the 73mm?
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2003 Sonic Blue Cobra |
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#16 |
Registered Member
Join Date: May 2003
Location: nc
Posts: 13
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![]() I'm not sure what years but you can see the difference. You do not have to cut out the post.
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#17 |
Registered Member
Join Date: Dec 2002
Location: Troy, Ohio
Posts: 38
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![]() Anyone have an Inexpensive one they wish to sell. Send me an Email.
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#18 |
Registered Member
Join Date: Jul 1999
Location: INDIANAPOLIS
Posts: 404
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![]() The post is there for low speed air flow. I am sure you guys have heard of rotating your MAF to "find" the air. In my opinion, and modification that can potentially damage a motor should be check with a wideband.
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old S trim combo 10.13@ 135 New YS combo = 680RWHP (no times) |
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#19 |
Registered Member
Join Date: May 2002
Location: The Midwest
Posts: 79
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![]() That T-Bird MAF is the same one used in the '93 Cobra. I can't remember the part number, but it started with "F1SC" which originally sources it from a '91 (and later) T-Bird. I know Pro-M used to cut the center post out and RE-CALIBRATE it for around $200!
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#20 |
Registered Member
Join Date: May 2000
Location: edmonton
Posts: 24
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![]() So I got a T-Bird MAF for $5 Canadian, almost free! Now I just will have a problem calibrating it, since drilling out 15/32 works for a supercharged 5.0 which needs more fuel it may not work well for naturally aspirated 5.0
Any ideas on how to do this??? I was thinking of buying a fuel pressure gause, air/fuel mixture gauge, and an adjustible fuel pressure regulator. Would increasing fuel pressure mean that I would not have to modify the MAF??? Would it be better to play around with the sampling hole in the MAF -OR- buy a "variable resistor" and play with the voltage coming out of the MAF sensor??? If we get this idea working properly then after-market MAFs will be history.
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306,9.5:1 comp., home made cooled RamAir,65mm TB,73mm MAF, MSD 6AL,Eibach progressives, KYB shocks, no front swaybar, 1-5/8 Flowtec headers, 2-chamber flowmasters w/turndowns, upper/lower Cobra intake (port matched),stock home ported heads,CenterForce2,SVO Aluminum Driveshaft,14.275 at 98 mph shifting @ 4700rpm |
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