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Which pcm is better?


94Reborn

Well-Known Member
Joined
Apr 23, 2012
Messages
55
Vehicle Year
1994
Transmission
Manual
I have a 1991 ranger STX 4.0l 5 speed pcm, and a 92 explorer sport 5 speed pcm. I haven't been able to find anything online as to whether there are differences, but does one have a 'sportier' or better calibration than the other? I don't know if the STX and sport designations made any difference in the programming of the pcm. It would be nice to pick up a horse or two, or better mpg's just by using one over the other.

The cal. codes are X2X2 for the explorer, and A1S for the STX ranger.
 
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