Great thread! Did you ever get the CEL to go away with that track slag DP?
The CEL is off because the EQT tune turns it off. If I were to flash back to stock to get inspected the light would be on as the car sits now.
My inspection expired 4 months ago so that's on the short list of things to sort out. I have a J-spacer that I need to install but I need a new exhaust clamp first before I take it all apart (for when I put it back together). I can't get the O2 sensor off without pulling the DP out.
I'll keep you posted when I get around to it.