just out the box thought how about attaching it to a cargo rack in the bed of the jeep that way you have room to still mount a tank if needed.

 

Installed under the back seat, the compressor will be quieter at the front seats.
It'll also be quieter than if installed at the back, with nothing around it to absorb sound.

Once there's a compressor in the Jeep, it's a shame not to use it for other things than inflating tires or operating air locks.
Tools which operate on air are simpler, lighter and cheaper than electric tools.

Having an air impact wrench on board makes the replacement of a wheel quicker & easier.
An air cutting disk can sometimes save a lot of work when a fallen tree block the trail. If not all, at least much of the manual sawing (and time) can be saved.
(Be careful... think where you cut. Trees & branches have a tendency to jump at you...)

Pressure (reduced!) can be connected to a water tank (especially if installed under the Jeep), to allow nice flow for anything, from filling a kettle to a shower head.

Air pipes "don't like" heat. Air pipes installed in the engine bay or under the Jeep (or where they're exposed to the elements) should have a thermal/mechanical protection sleeve over them.

Another thing is that the air tank may collect water over time. How much or how often depends on the weather and use. The tank should better have a faucet at its lowest point, to allow water draining. Take this into account when you install the tank, place it so draining is possible and accessible.
If the tank is inside, attach a draining pipe which is long enough to lead it outside before opening the draining faucet.

 

Figured since I was the OP, I would update. I mounted in the cargo area on a Molle panel. Works great!

 

Nice & clean installation

 

Thanks! It worked out well.

 

How loud is this compressor when its running?

 

It's pretty loud. It would be better under the seat to muffle it a little. I have e lockers so I am never inside while it's running so I'm not worried about it. The volume of air this compressor puts out outweighs the noise.

 

Why not put the compressor under the hood and run the intake inside the cabin?

 

I didn't want it subjected to the heat and grime of the under hood environment. I like it inside where it's cool and clean. I might have a different outlook if I was running air lockers.

 

That is a clean install. I was considering a different route until I found this thread. I have a few questions.

1) How long does it take to fill up a 35" tire to 40psi from 15psi?
2) In its out of box form, how functional are "Air tools rated up to 85LPM [3CFM] @ 6Bar [90PSI] continuous supply"
3) How was the wiring experience? DO you have a second battery or deep cycle?