So recently I started a thread about a tuneup needing to get done on my aero, got plugs and idnition coils replaced. I think the NGK laser iridium are OE? I ended up using denso plugs. Ran fine for a few months then started to misfire on cyl 1-3, so I decided to get the NGK, gapped then at .040, and it’s been running solid since ! Only thing now is I have to find a coolant leak ?