Hey, glad to see a RS forum has popped up. I'll hop on board to give it a shot.
2017 Q50 RS: FB118 Heat Exchanger, Megan LDPs, MBRP CBE to the rear axle, Resonated Muffler Delete from axleback, Mishimoto OCC, RSR Downs, Konig Oversteer 19x9.5 40et (25lbs) wrapped in General G-Max AS-05s 255/35/19s.