Right now, (I did use the Wynn's, but not much seemed to come out frtom the exhaust) I'm having
1.Boost hitting about 25 in say 3rd, but each shift only spiking about 20.
2. Definitely some WG rattlesnake sounds at peak
High rpm misfires, bucking, cutting, whatever you'd call it (no VCDS, but also no dash codes).
3. Fuel mileage down to about 23-24 mpg per tank, so carbon buildup is a definite possibility.
4. A slight shudder at idle. Again, no codes, but I can feel it. Not severe though.
Plugs were just replaced with NGK BKR8EIX .023 about 2k miles or less.
R8 coil packs (20 ish k miles)