Interesting history. A little of mine... My parents traded our first year 289 Mustang for a 67 442 (4 spd-our family car, LOL). Traded that in 69 for another 442 (auto), that I learned to drive on. Traded that for a 72 H/O (I occasionally got to drive that to last year of high school. My car...
Pretty sure I have seen posts of power gains with mods and no reprogramming. I guess that means those maximum values you speak of are not met with factory configurations. ;)
Some owners manual excerpts
Tire Fill Alert (If Equipped)
This feature provides visual and
audible alerts outside the vehicle to
help when inflating an underinflated
tire to the recommended cold tire
pressure.
When the low tire pressure warning
light comes on:
1. Park the vehicle in a safe...
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