gas trucks
I was looking for more info about the differences in the 87,89,91 settings.
I would guess that it has to do with timing. Are the shift points also changed usually?
Are there numbers about what a chip would do ie HP for an otherwise stock 5.8L 1996 F250 with Auto. I know that big numbers are not attainable like a diesel, is it more drivablitiy, mpg and such.
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