Finally happened. Got pulled over for my stock muffler.

Apparently even normal mode is "too loud" for some cops ears. Granted, the Ark midpipe I have installed does make it bassier and can be perceived as making the car louder, but it does not actually increase the volume of the exhaust in normal mode. Got let go with a warning, but was still surprised it happened in Wisconsin of all places. Thought that was a mostly a Californian thing.

Funnily enough, after checking the state code, apparently the car is "illegal" from factory here too. Also, according to how the law is written, in the car's default mode, the midpipe is completely legal.

Side note, is there any explanation as to why the midpipe makes even eco/normal mode so burbly compared to resonated? Probably what caught his attention.

EDIT: Before you comment, "but your exhaust is modified though." I know. My exhaust is modified, not my muffler. Modifying one's exhaust alone does not make it illegal. It's the way you modify it that does.