Ok I've got two things to bring up:
1. After installing BMS charge pipes and intakes, the car has some kind of fluttering noise under WOT. It doesn't seem to impact power, but I'm hearing almost like a repeated chirping. Could be turbos, but my N54 turbos never sounded like that.
2. Am I nuts or is it impossible to find front sway bushings? I have some popping up front, so I replaced the sway links. I'm still hearing/feeling the popping while backing up and turning, so I thought I'd go to the next step and replace the front sway bushings.
Guess they're built into the sway bar assembly or something and I'll just have to install a full upgrade if I want to go that route. Closest I found was here, and they're probably for the regular 6 series:
https://www.bimmerworld.com/Powerfle...6-F13-F02.html
Thanks for any input