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post #1 of 11 Old September 17th, 2008, 08:43 AM Thread Starter
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Computer?

I was looking through my garage and found 2 extra computers for my car I was wondering which one would be best. If there is any difference. I have an A9L on the car and the others are A9P and A3M. any ideas?
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post #2 of 11 Old September 17th, 2008, 08:52 AM
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I was looking through my garage and found 2 extra computers for my car I was wondering which one would be best. If there is any difference. I have an A9L on the car and the others are A9P and A3M. any ideas?
if its a 5 speed use the A9L then give me your A9P cause i need one in a bad kinda way cause i am switching from manual to auto. ill send u my A9S which is the 88 cali 5 speed maf computer only made for 1 year. pretty please

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post #3 of 11 Old September 17th, 2008, 10:59 AM
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You can use either the A9L or a9P in a five speed car.. some go with the A9P because it has a slightly aggressive spark and fueling tables over the A9L but it's not a huge difference.
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post #4 of 11 Old September 17th, 2008, 07:00 PM
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thanks flyin ryan you just hosed my chances of getting the computer that i need i cant use ither lol i have an auto!!

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post #5 of 11 Old September 18th, 2008, 07:55 AM Thread Starter
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just out of curiosity what is the A3M computer. it came out of a 93 cobra i believe
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post #6 of 11 Old September 18th, 2008, 11:22 AM
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thanks flyin ryan you just hosed my chances of getting the computer that i need i cant use ither lol i have an auto!!
Sorry man didn't mean to cock block you

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just out of curiosity what is the A3M computer. it came out of a 93 cobra i believe
It's the same just newer I believe
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post #7 of 11 Old September 18th, 2008, 05:21 PM
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Originally Posted by jrh_1980 View Post
I was looking through my garage and found 2 extra computers for my car I was wondering which one would be best. If there is any difference. I have an A9L on the car and the others are A9P and A3M. any ideas?
The A9L is a good computer. Some people have said the A9P has more aggressive spark and fueling tables and does not retard timing between shifts and the A9L does but I don't have any real facts to prove that.

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just out of curiosity what is the A3M computer. it came out of a 93 cobra i believe
The 93 Cobra computer is an X3Z not an A3M.

My daily driver has 16 cylinders and 4400hp @ 1000 rpm....


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post #8 of 11 Old September 18th, 2008, 05:26 PM
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just out of curiosity what is the A3M computer. it came out of a 93 cobra i believe
nope the X3Z came from the cobra. the A3M was in james stock 93lx.

ask james which one he liked more he has had almose every computer in his car .. A3M,X3Z,A9S,A9L,some unknown computer from autozone. lol

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post #9 of 11 Old September 18th, 2008, 06:24 PM
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nope the X3Z came from the cobra. the A3M was in james stock 93lx.

ask james which one he liked more he has had almose every computer in his car .. A3M,X3Z,A9S,A9L,some unknown computer from autozone. lol
Not the X3Z, I know that much.

My daily driver has 16 cylinders and 4400hp @ 1000 rpm....


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post #10 of 11 Old December 10th, 2009, 07:52 PM
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i am switching my car from speed density to mass air......currently have the da1 and i have a A3M sitting around. Been told to use a A9l but willl the A3m work just as good ???

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post #11 of 11 Old December 11th, 2009, 05:48 AM
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I found this somewhere and I've been saving it.

A9L is a mass air computer that can only be used on manual transmission car. A9P is a mass air computer that can be used on auto or manual. Both are great computers that respond pretty well to modifications.


A9L - 89-93 5.0L Mustang 5-spd
A3M - 93 5.0L Mustang 5-spd
A3M1 - 93 5.0L Mustang 5-spd
X3Z - 93 5.0L Cobra 5-spd
A9P - 89-93 5.0L Mustang Auto
A9S - 88-93 5.0L Mustang California
C3W - 89-93 5.0L Mustang Auto
DA1 - 87 5.0L Mustang 5-spd
J4J1 - 94-95 5.0L SVT Cobra 5-spd
T4M0 - 94-95 5.0L GT Vert 5-spd
U4P0 - 94-95 5.0L GT Auto
W4H0 - 94-95 5.0L GT
ZA0 - 95 Cobra R
D9S - Lincoln LSC
ZXA3
LLX3
CCA1
CCA0




It's just an internal (FoMoCo) code name.


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