Join Date: Jan 2002
Location: colorado springs, colorado
It depends on your dealer. Techincally, if something were to happen as a direct result of the catless up-pipe then the dealership could void your warranty. Legally though they must prove that. If you let them push you around they could void the powertrain if they see it during routine maintenance.
It should pass emissions in most every state. There are still two more cats downstream of the pre-cat which will take care of all the emissions.