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SD vs MAF on Stock 5.0

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Old 03-18-2011, 03:26 AM
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GT350son
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Default SD vs MAF on Stock 5.0

I would like to know what is better for performance and mpg on a stock 87 5.0. Either Speed density or Mass Air Flow?
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Old 03-18-2011, 10:47 AM
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AdderMk2
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if its stock, it really doesnt matter. but when you start adding things like TB, intake, cam, heads, cubic inches... the factory SD system will become a hindrance.
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Old 03-19-2011, 10:08 AM
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JPJP
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The question was if it was regarding STOCK performance. To quote "The Official Ford Mustang 5.0 Technical Reference & Performance Handbook":

"An OE or mildly modified 5-liter H.O. motor equipped with a speed density system will outperform a mass-airflow system (on a comparable motor) in wide-open-throttle operation. This is due to the speed density system's slightly leaner calibration and the lack of a restrictive mass-air-flow meter in its inlet tract."
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Old 03-19-2011, 10:21 AM
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See scanned page from book.
Attached Thumbnails SD vs MAF on Stock 5.0-sd_vs_maf.jpg   SD vs MAF on Stock 5.0-sd_vs_maf_cropped.jpg  

Last edited by JPJP; 03-19-2011 at 10:32 AM. Reason: CROPPED PIC ADDED
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Old 03-20-2011, 11:29 PM
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GT350son
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Originally Posted by JPJP
The question was if it was regarding STOCK performance. To quote "The Official Ford Mustang 5.0 Technical Reference & Performance Handbook":

"An OE or mildly modified 5-liter H.O. motor equipped with a speed density system will outperform a mass-airflow system (on a comparable motor) in wide-open-throttle operation. This is due to the speed density system's slightly leaner calibration and the lack of a restrictive mass-air-flow meter in its inlet tract."
This is the response I was looking for thank you. Hard to find this information only thing people talk about is if its better for modified engines.
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