[tan_rich]

2013 335is dct,

Stage 1+(intercooler+intakes) for 35-45k miles.
Stage 2+(intercooler+intakes+downpipes) for 45k-80k miles.
Stage 2+ flex fuel e35 (fbo+ff) 80-92k Miles.

Car was daily driven since I bought it from the previous owner. Turbos were boosting well and car didn't live an easy life. Nothing major broke other than o2 sensors going bad around 80k miles. Did plugs oem spark plugs every 10k mile then swapped to 95776. Did oil every 3-4K miles. Brake flush, coolant, transmission fluid, differential as needed.

Yes things here and there will break for any car, the rate is just accelerated on a modified car. The key to a long lasting car is maintenance.

Notice your car is having weird or long starts, check logs to see if it's your fuel pump going. Replace or remedy it before it breaks so it doesn't induce a failure somewhere else. See your fuel trims are really high or abnormal, check to see if your o2 sensors are working properly.

Notice something weird happening on your car or any car and don't ignore it. Preventive maintenance is the best maintenance.

Just remember it's a pay to play game.