still chasin issues after an engine swap and tune

XtorT'r

New Member
Jun 11, 2003
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Minnesota, YAAA
So I have the car and it's tuned but I am still throwing a couple codes.
I didn't write down the specific codes but this is what they are.

Multiple random cylinder misfires

and

Bank 2 running rich

I was throwing a code for cylinder 2 misfireing but I replaced that coil and I replaced my passenger side o2 due to a slow sensor code. I have cleared the codes with my scan tool and the two come back.
Might I need to regap my plugs after my tune or something? I just can't figure out the bank 2 running rich issue, any ideas?