Speed Density vs. Mass Air
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Senior User
Joined: Jul 2004
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From: Fairbanks, Alaska
Speed Density vs. Mass Air
We have a 95 5.8 Bronco. I guess we have the speed density setup because I know it doesnt have mass air. I know what a mass air set up looks like but what are the real differences between the two? Im not sure what the speed density looks like, there is nothing on the intake hoses or anything "like a mass air".
Which one is better?
Which one is better?
Cargo Master
Joined: Nov 2003
Posts: 2,000
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From: North Dakota
I don't know but I would like to know more just like you. I want to do it to my truck but I am not sure what all needs to be purchased and changed out. Can anyone help the both of us? Thanks!
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Joined: Jul 2004
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From: Front Range of Colorado
There are several websites that have information about the conversion. Basically, you take the complete MAF setup from a Mustang, matching trans type, including computer and put it in your Bronco. I used the Ford Racing MAF conversion kit, M-9000-T51 (automatic trans) to convert mine. It has everything including the intake air tube with MAF sensor and wiring harnesses. Summit sells them, along with many others. It will take a few hours to install, but is very straightforward. I think if you go to the Ford Racing website you can see the kit somewhere on there.
Pam
Pam
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From: END OF THE OREGON TRAIL
Mass air flow uses a airflow meter to measure quantity of incoming air so that the computer can calculate fuel mixture requirements.
Speed density uses preset caculations from computer memory. Both read throttle position , engine temp , air temp , O2 in exhaust etc.
Mass air can compensate for changes in amount of incoming air. Speed density relies on preset memory and reads RPM etc to determine air/fuel ratio. Advantage of Mass Air it can compensate for engine modifications without changing computer program. Speed density requires new chip or reprogram to handle big variation from stock parameters .
Speed density uses preset caculations from computer memory. Both read throttle position , engine temp , air temp , O2 in exhaust etc.
Mass air can compensate for changes in amount of incoming air. Speed density relies on preset memory and reads RPM etc to determine air/fuel ratio. Advantage of Mass Air it can compensate for engine modifications without changing computer program. Speed density requires new chip or reprogram to handle big variation from stock parameters .
Last edited by 93BigBlackBronco; Aug 8, 2004 at 12:25 AM.
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From: Fairbanks, Alaska
Thank you very much, cleared up alot....now I understand why we with speed density are limited to certain modifications such as wild cams and what not.
Thanks
Thanks
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From: Bend,OR
Originally Posted by snowmobilerfreak
Thank you very much, cleared up alot....now I understand why we with speed density are limited to certain modifications such as wild cams and what not.
Thanks
Thanks
go to www.fordfuelinjection.com it explains the difference in detail. a great site
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