PCM issue
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Joined: Feb 2005
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From: British Columbia
PCM issue
I can't see why you must use a pcm with the same # on it. Would not a 2003 pcm placed in a 1999 truck bring up the hp to 250 and have all the improvements from ford in it. Since everything else in/on the engine is the same, aren't the newer pcms just updated for performance improvements????
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I can't see why you must use a pcm with the same # on it. Would not a 2003 pcm placed in a 1999 truck bring up the hp to 250 and have all the improvements from ford in it. Since everything else in/on the engine is the same, aren't the newer pcms just updated for performance improvements????
The only pcm you can gain anything from is a well tuned one.
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Junior User
Joined: Feb 2005
Posts: 66
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From: British Columbia
Still can't get my head around this. All sensors feeding the pcm are the same in all the 7.3 trucks for all years 1999-1/2 to 2003. Virtually every engine/trans. management sensor is identical. So, if all are the same, then different pcms shouldn't matter except for different engine/trans. strategy changes??? Depending on Ford learning as time goes by and changing pcm strategies to compensate for problems encountered in trucks as time goes by. If different pcms do weird things, what is causing the changes???????
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