Yeah so I just paid for my 435i to get a diagnosis because i was experiencing misfires and after changing the coil the code read (autozone) it ceased misfiring but the engine light never went back off so like every first time BMW owner i ignored it since it still did wonders. Months later Im back to square one and now im getting a drive train error. Decided maybe the professionals should have a look and as i was prepared to break the bank i ot a called back saying my car was indeed too modified and in order to fix it i have to go back to the factory model. What sucks is i bought the car like this 🙂‍↕️…but yeah any advice, they just told me to go to a local shop 🤷🏾‍♂️ 255 down the drain if you ask me 🕺🏾