before dropping any more time and money into this 328i I would be absolutely certain this car doesn't have a cracked rear subframe. hate to say it but this yr and model is known to have this issue more than others. It's costly so be sure the car is clear or I'd sell it before putting more into it than its worth.
OE CSL WHEELS - OE CSL BRAKES - OE AUTOFOLD MIRRORS - CSL TRUNK - CSL DIFFUSER - AA SPORT TUNE - AA PULLEYS - BILSTEIN PSS9s - AS 40% SSK
CF CSL RACE LIP - NAVI - BMW PERF CF STRUT BAR - BMW GROUP N MNTS - GRUPPE M CF INTAKE - UUC SS BRAKELINES, TRANS MNTS, RTABs - 4.10 BMW M-SPORT DIFF