Ram with V6. Reviews?

I have yet to break the magic 14 mpg mark with my 5.7 ram
When my '05 dropped that low on the highway, the throttle body was caked up with black gunk. I cleaned it out as best I could without removal using rags soaked in seafoam I had. Made a big difference for me.
The second time milage dropped off was even worse.
Found these tree rats under my air filter.........
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Anyone have experience, good bad or ugly with these?
Might look through some posts here.........
https://dodgeforum.com/forum/5th-gen-ram-tech-166/