What to do for increasing efficiency and longevity

[CBarclay]

Hey everyone,
I just got a 25 and am new to the forum. I want to make sure to care for it well and make modifications necessary to help with efficiency and longevity.
With my setup, I’m currently averaging 14.7 mpg and feel like it can do better.

I’m no mechanic or engineer but if I understand correctly, CAI, boost tubes and tunes help with power as well as system functionality. Do I understand correctly that in doing so they also help with how efficiently the systems work? If so, would one of these,, or something else help with fuel and functional efficiency? From what I’ve read, the manufacturers concentrate more on power, sound, performance, etc. I’m happy with all that as is and am a relaxed driver for the most part. But if there’s something I can do to help with efficiency, I’d love to go that direction especially for cross country trips.
Thanks for any help and guidance!

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[Echoedlite]

This is a good guide for general mpg 'hacks'
As for 4th gen tacomas, I've found keeping your tire pressure at mid 30s, driving at the speed limit to keep RPMs low, as well as just being light on the pedal when pulling away.

On the new trucks it can take quite some time for your mileage estimate for your miles to empty gauge to really calibrate. Bed caps and tonneau covers seem to help to but thats only something I've noticed without being able to prove it.