Yes I already regapped them. Out of the box they were 0.025-26 so I didn't adjust them. I started having this issue, so I pulled them and two were around 0.030.
I’d like to know also because information I was given have changed In a years time. Daniel from Littco told me to run RS8 plugs when I install my L450 and UM said NOT to run a hpfp. Back when this was posted he was talking about the hpfp being on the way to an upgrade. I’m curious to how everything is now. Would definitely be helpful to me that is for sure. Love to know about how the car feels and what power it’s making now. Good call
I switched to RS7 plugs and added a HPFP. I didn't run into any issues after that, but I didn't keep the car much longer to give any long term reviews.