Originally Posted by RaptorKTM
I just ordered the full system, and am curious to know if pairing this exhaust with the ESS tune will override any codes, however when taking it into the dealer and shutting the tune off, more then likely a tune will arise, other then the obvious reasons, how will this affect bmw performing other services then more then likely they will not want to release a vehicle or wont be able to if it has a check engine light.
This would sound like its a question for ESS. I would suggest calling them and getting your answer directly from the source.
Be sure to follow up so others with the same question can benefit!