[LJohnson32]

May seem like a silly question to some but I'm curious if there is a simple method to find out if my car is flashed/tuned?

Backstory to this is myself and a friend with a LCI F10 M5 went to a car show together on Saturday morning and we did a pair of runs from the lights. Despite his car having a JB4, BMS intakes, Eisenmann exhaust and the F10 M5 weighing ~150lbs lighter than the M6GC, I won handily both times.

I purchased my car CPO from a BMW dealer back in May and all of my mods to this point have been cosmetic. Is it possible that I purchased the car already tuned or is there no way the tune would've snuck through the CPO checklist when the car was processed at the dealership?

Thanks in advance for any insight