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5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

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Old 09-28-2006, 09:59 PM   #1
Katmandu
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Default What's the difference(s) between a A9L and a A9M ECMs ??

What's the difference(s) between a A9L and a A9M ECMs ??
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Old 09-28-2006, 10:04 PM   #2
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Default RE: What's the difference(s) between a A9L and a A9M ECMs ??

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What's the difference(s) between a A9L and a A9M ECMs ??
Just found out the A9M is for Automatic cars and A9L is for manual cars.

My car is a Manual and has a A9M ECM. ???? What gives ???
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Old 09-28-2006, 10:08 PM   #3
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Default RE: What's the difference(s) between a A9L and a A9M ECMs ??

i was about to say that lol..... ur car was prob a auto to t5 swap
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Old 09-28-2006, 11:27 PM   #4
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Default RE: What's the difference(s) between a A9L and a A9M ECMs ??

A manual car should be ok with an auto computer.
But, an auto car wouldn't be too great with a manual computer. So I have heard.


The A9M should work just fine for you.

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Old 09-29-2006, 12:16 AM   #5
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Default RE: What's the difference(s) between a A9L and a A9M ECMs ??

ive heard the a9p (auto comp.) is better for 5speeds because a more aggresive fuel and air curves but u never know.
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Old 09-29-2006, 02:11 AM   #6
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Default RE: What's the difference(s) between a A9L and a A9M ECMs ??

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ORIGINAL: mostdef
ive heard the a9p (auto comp.) is better for 5speeds because a more aggresive fuel and air curves but u never know.
I've heard that too, but no proof.
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Old 09-29-2006, 02:44 AM   #7
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Default RE: What's the difference(s) between a A9L and a A9M ECMs ??

my car runs the same performance wise after going to an a9l so I dont believe that
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Old 09-29-2006, 02:53 AM   #8
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Default RE: What's the difference(s) between a A9L and a A9M ECMs ??

Grabbem swapped puters, I can't remember if he noticed a difference in power or not.
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Old 09-29-2006, 02:55 AM   #9
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Default RE: What's the difference(s) between a A9L and a A9M ECMs ??

only thing that sucked about the auto puter was that every time you started it or shifted gears the rpms would jump up
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Old 09-29-2006, 04:25 AM   #10
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Default RE: What's the difference(s) between a A9L and a A9M ECMs ??

i have a manual computer in my auto and it runs better than before

i had a C3W ('93 only) computer in it before but it **** the bed
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Old 09-29-2006, 04:25 AM
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