Reads like carbon build up in #5, it's fuel injector could be leaking, or the intake valve guide's seal is allowing oil in, or it had a bad spark plug or wire allowing unburned fuel to build up inside the cylinder.
Spark plug tip might tell you??
165psi on the rest means valves and cam timing are OK.
This cylinder was most likely the miss you felt coming and going, but not because of the higher compression.
The higher compression is the result of the miss, it shows it has been building up a carbon layer for awhile, which makes the cylinder area smaller so it now has higher compression than the others.
I would run Seafoam in the gas tank, $8, for the next two fill ups, $16, to clean out the carbon build up.
Some run it in the intake at idle via a vacuum hose to do a quick clean, I don't, but that option is available.
The bogging is either timing advance issue or fuel mix issue.
Fuel mix issue could be fuel pressure related, testing fuel pressure at idle, 65psi, and then at sustained RPM of 2,000 might reveal a drop in pressure if fuel pump/filter can't keep up, although I would think this would cause the CEL to come on as the computer reached it's "rich limit" while trying to compensate for the lower pressure.
You mentioned a CAI, could this have effected your MAF sensor's detection of ALL the air entering the engine?
The MAF sensor is the beginning of the intake manifold, so from MAF to cylinder intake valves is a "vacuum", all engine air must pass thru the MAF or the system won't work as designed.