Randall: your muffler?

[98Boxster98]

Originally Posted by RandallNeighbour

I discovered bypass pipes could earn me a trip to the muffler shop once a year to put the factory one back on to pass inspection. .

I thought the muffler bypass pipes were post-cat ala the Porsche Sport Exhaust for a better sound. It seems that cat bypass pipes may cause problems with the state inspection but I have seen other postings where the first set of CATs are bypassed and supposedly in some states, it still passes emissions test and doesn't cause any CEL/MAF problems.