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.

PCM differences?

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Old Sep 16, 2008 | 06:40 PM
  #1  
fordboyyfm's Avatar
fordboyyfm
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Default PCM differences?

my fuel driver shorted out today, so i grabbed the pcm out of a guys car i work with so i could bring it back to work. Mine was an A9L his was an A9P. it seemed to run a little better on the P. anyone know the exact differences between the two, i have a 347 afr vic jr c4 3400 stall big cam.
Old Sep 16, 2008 | 08:44 PM
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See the timing differences in this tech article...

Compare A9L, X3Z, A9P

I never got around to the fuel differences, but they aren't major...
Most folks don't notice a difference between the A9L and A9P
Old Sep 16, 2008 | 10:43 PM
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EITHER ONE OF THE TWO SHOULD WORK FINE FOR YOU
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