Below was my latest setup before I sold the car. After testing many setups and different things, it worked amazingly well with this configuration and was finally predictable and responsive to adjustments. Now I'm gonna go cry because I miss the car so much...
2017 BRZ Limited
Suspension:
MCS 2-way remotes
Front spring rate: 280 (5k)
Rear spring rate: 504 (9k)
Raceseng Camber Plates
Vorshlag rear shock mounts
Camber: -4.2* front, 0 toe / -2.8* rear, little bit of toe in
Perrin 22m front bar on stiff
Mann Eng rear bar on stiff
RaxerX end-links all around
DIF rear LCA
DIF steering rack bushings
Whiteline rear subframe, shifter, and diff bushing inserts
Engine:
Stock intake with Blitz filter
Perrin inlet tube
ACE A-350 EL header
JDL ultra quiet front pipe
Dezod dual exit exhaust
Delicious tuned ECUtek 91 and 93 octane tunes
Wheels, Tires, Other:
AP Racing Sprint BBK / Ferodo DS2500 pads
Weds TC105N 17x9 +35 with 255/40 RE71R
OS Giken STX tuned diff
Shorai lightweight battery
Sparco EVO seats with Buddy club mounts