This one I don't understand myself he got those coils from me, on my car with 0.8 plugs they are sweet, there's absolutely no cracks in the packs and I have basically similar mods.
PFC
cooler
full exhaust + am cat
panel filter
boost at 11psi
when you reinstalled the bov check to see if it's tightened properly When I did mine I didn't tighten it enough and could hear a leak, tightened it up and sweet again