!
https://youtu.be/oHvydmHxhiQ
Your link is messed up
BTW
Intake and exhaust will not improve power or efficiency on the 4.0. Placebo effect. The PCM relearns it within 500 mi.
The regearing is to gain back high gear in auto trans. Even in manual. Are you able to pass or pull a incline and hold speed at or above 65mph in top (5th) gear? Auto trans lose high gear and cannot maintain highway speeds.
Normal driving should occur between 2250 and 3000 RPM. This is the max efficiency for the engine without lugging. Lugging or loading the engine (below 2250 rpm) over a long time results in engine damage.
A lot of engineering went into this chart. I’d follow it.
from Quadratec.com
Front axels are often smaller than a D44. This means the ring gear and teeth are thinner. Same for the shafts. Hammering the gas in 4L 1st or 2nd gear is what twists the shaft or breaks ring gears. So light wheeling and no 4x4 burnouts, or hammering the skinny pedal allows the shafts and gearing to last.
Regardless larger heavier tires increases stopping distances. And anything adding weight. Height may make a difference as well in some cases. So, I wouldn’t say larger brakes are not needed.
When hot likelihood of brake fade is what to consider. Also, descending steep and lengthy inclines wheeling.
What you did may fit your style of wheeling but there are many other levels that need consideration.
Q:
Did you do any of this because you didn’t mention
1) lengthen your brake lines
2) lengthen Bump stops
3) lengthening track bar
4) aligning after lift
5) shocks?
6) extended sway bat links (10 deg above level)
Good luck with your new setup.
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