3 ms·

Voids warranty.

• DrJokepu 3y ago
  In the United Stated at least, federal law stipulates that modifications only void warranty if they can show that the modifications caused the failure.
  • dirtyid 3y ago
    My understanding is some dealers, especially BMW are dicks with any ECU tuning and will deny support. And then it's a question of whether it's worth hassle to go to court or eating the cost. Maybe that was just limited to messing with engine/transmission.