Thanks for the input guys. I found it hard to believe myself that someone would call me out of the blue like that. I have gotten nothing but compliments from a few other BMW enthusiasts, but I guess I came across an outlier. I am a non confrontational guy, so I didn't bother calling him out on whatever claims he had. Maybe he had something under his hood he wasn't disclosing that made him come across as over confident, but I have no clue what. I described his car exactly how it was above, if this person is on 5post, I'll gladly take you up on that offer in the future. But I thought it was borderline childish to insult my car like that and say "mine is better than yours"
Current: AW/SO F10 M5 H&R Springs, 12mm/10mm Spacers
Sold:Imola Yellow RS4-KW V3, MTM 10mm spacers, Hotchkis rear sway bar, APR Stage 1, Milltek Catless, RNS-E, Euro RS4 Flat bottom Steering Wheel