Originally Posted by DRedman45
^thats actually illegal...in order for any car warranty to be voided, the change made must be directly related to the failure...say if your fuel pump goes they can't void the repair...if the cat goes bad they would probably be able to void it although it is unrelated
If you are really worried, you can pay the premium for the BMW performance exhaust
Can something actually go bad when changing exhaust. Also how much if an improvement is the bmw PE.