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Author
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Topic: mass air/ speed density?
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Hrly01Stng
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Member # 2843
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Does anyone know when ford changed from speed density to mass air on the 5.0's?? speed density sucks... And does anyone here know how much to convert speed density to mass air? Thank you ![[Whoo Whooooo!]](graemlins/woowoo.gif)
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HCI blower built shortblock 285ci
Posts: 336 | From: Milpitas | Registered: May 2003
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mike g
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Member # 2919
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88 for california mustangs, 89 for all other mustangs. I just did the mass air conversion on my stang for $130, i got everything off of ebay.
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FOUR EYED PRIDE!!!!!!
Posts: 289 | Registered: Jun 2003
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MR GO FAST
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Member # 2088
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posted
quote:
Originally posted by Hrly01Stng:
Does anyone know when ford changed from speed density to mass air on the 5.0's?? speed density sucks... And does anyone here know how much to convert speed density to mass air? Thank you
I have a stock mass air meter if you need it.
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1986 Gt that is faster than FOSTANGS pinto
Posts: 3729 | From: ATWATER/SANJO/RWC | Registered: Nov 2002
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KCmustangboy
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Member # 1927
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Whats wrong with S/D?
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03 Cobra... Factory long block, with Whipple and AED tune... 812rwhp 10.0s @ 140... almost there!
WWW.AEDHP.COM
Posts: 1691 | From: San Jose, CA | Registered: Oct 2002
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mike g
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Member # 2919
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posted
most aftermarket cams mess with the engine vacuum which messes with the way the s/d "measures" air. Since it doesn't actually measure the air coming into the engine like a mass air system does, it will cause very ruff idle(if it will even idle). I didn't bother to read up on s/d to much because i was going to switch to mass air anyways, but i think the way s/d works is it measures the pressure in the intake(through the map sensor) and it reads off some pre-set charts that are in the computer to find out how much fuel and such to make the car go.
although you can have a custom chip burned for the s/d system that will allow your car to run fine, but if you change anything on the engine you will have to get a new chip burned to compensate for the change. And since its so cheap to convert to mass air, its a real no brainer if you are thinking of putting lots of mods on your car.
[ June 25, 2003, 09:14 PM: Message edited by: mike g ]
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FOUR EYED PRIDE!!!!!!
Posts: 289 | Registered: Jun 2003
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Hrly01Stng
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Member # 2843
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Ok anybody here know the specifics for the mass air? I have a friend who wants to do it for his bronco but doesnt know how hard it would be? any one care to Fill me in on this??Thank you
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HCI blower built shortblock 285ci
Posts: 336 | From: Milpitas | Registered: May 2003
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mike g
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Member # 2919
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well i dont know for a bronco because it probly has a different wiring harness, but for my mustang it took about 5 hours to do. i got my instructions from http://www.corral.net/tech/powerplant/maf_tech_2.html
but that probly wont help for the bronco because the pins you have to move will probly be different.
i dont really understand what you mean by the "specifics". Do you mean what you need to get the job done? if so it tells you in that link. Hope this helps.
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FOUR EYED PRIDE!!!!!!
Posts: 289 | Registered: Jun 2003
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Hrly01Stng
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Member # 2843
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Thank you Sir...Yea just like what is needed and stuff.. but thanks.. im sure its simaliar.. its a 351W..soo.. shouldnt be that different..
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HCI blower built shortblock 285ci
Posts: 336 | From: Milpitas | Registered: May 2003
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chosen1
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Member # 1906
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Speed Density does not suck. The accel dfi setup and other Hi Performance fuel injection systems work off the speed density theory. There is a $85-90 harness that you can buy that piggy backs the stock s/d computer and allows you to use a mass air meter. You can find mass air meters anywhere.
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1967 Fastback. Should go 10's -but doesn't
1993 Cobra
2003 Suzuki SVS
1966 Coupe -For Sale
Posts: 2205 | Registered: Sep 2002
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BlackNGold
CaliforniaFords.com
Moderator
Member # 655
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posted
I hope that the 351 is modified on the Bronco...If your friend is simply installing a MAF sensor set up becuase he thinks its just better than speed density he's gonna loose horse power....If the Bronco is modified with atleast a cam then he will benefit...
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-SLOWER TRAFFIC KEEP RIGHT-
Posts: 5132 | From: Bay Area, CA | Registered: Dec 2001
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Hrly01Stng
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Member # 2843
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It is at the time being. He wants to add headers and a ignition kit but doesnt know if that would mess with the s/d. he heard different stories from people so.. Im just asking for him..
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HCI blower built shortblock 285ci
Posts: 336 | From: Milpitas | Registered: May 2003
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BlackNGold
CaliforniaFords.com
Moderator
Member # 655
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Just headers and ignition is not worth spending the time and money on a MAF conversion...
I did the conversion on my '86 GT...It cost me like $300 and made me slower...I used to constantly race my friends car...I found after the conversion I was about a car and a 1/2 compared to how I was before...
[ June 26, 2003, 11:14 PM: Message edited by: Black94 5.0 ]
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-SLOWER TRAFFIC KEEP RIGHT-
Posts: 5132 | From: Bay Area, CA | Registered: Dec 2001
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Hrly01Stng
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Member # 2843
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Yea? well hes not sure what the headers will do cuz one of his friends who had a bronco had speed density and he put headers on and it ran like shit so now being how unsure my friend is he doesnt want to do anything till he has the MAF. Thank you guys for your input.. much appreciated ![[patriot]](graemlins/patriot.gif) ![[worship]](graemlins/worship.gif)
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HCI blower built shortblock 285ci
Posts: 336 | From: Milpitas | Registered: May 2003
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chosen1
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Member # 1906
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Stock Speed Density Car vs. Stock Mass Air Car....
Speed Density will win.
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1967 Fastback. Should go 10's -but doesn't
1993 Cobra
2003 Suzuki SVS
1966 Coupe -For Sale
Posts: 2205 | Registered: Sep 2002
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KCmustangboy
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Member # 1927
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quote:
Originally posted by Chosen1 aka The Thread Killer:
Stock Speed Density Car vs. Stock Mass Air Car....
Speed Density will win.
This is true, I proved it at the track, 14.9 @ 90mph VS 14.6 @ 94, The airflow difference is HUGE, but a aftermarket mass air meter will make up for most of this.
Casey
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03 Cobra... Factory long block, with Whipple and AED tune... 812rwhp 10.0s @ 140... almost there!
WWW.AEDHP.COM
Posts: 1691 | From: San Jose, CA | Registered: Oct 2002
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