Hey so maybe one of u guys has any idea. I have a mystery cyl 5 misfire.car ran fine, parked it to replace my vtc oil seals. I replaced the vtc oil seal on bank 2.put everything back together started the car and suddenly have a really bad mis on cyl 5.so not even the same bank.
Here's all I did:
Replaced and swapped could with different cylinders
Replaced sparks with oem denso
Replaced injector, twice
Swapped maf(with a friend's g)
Swapped o2 sensor (with a friend's g)
Swapped ecu
Did compression test which was fine
Did leakdown test which was fine
Did valvecover gasket
Oil change
Checked harness with power probe
Changed coil connector
Replaced cats with test pipes
Fuel is not old or too low
Tested fuel pressure
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But I still get a misfire on cyl 5 and since last week
I'm Also getting misfires on cyl 6.misfire counts are usually 500 for Cyl 5 but only 2 for cyl 6.im. Took the car to infiniti and they said they couldn't find anything. I'm Going crazy its been almost 6 months.

Mods are short ram air intake
Resonated test pipes