[Dr.Strangepork]

I have tried running my car with the muffler disconnected. It's louder than hell and sounds like crap. With my aftermarket straight through muffler, it's just the right loudness and sounds great

Originally Posted by KRAM36

I have been wondering about trying these right off the cats from the exhaust manifolds and pipe it out from there.

3 Disk Flanged Inserts : 2 1/2" Diameter

The Boxster's exhaust piping is an oddball size so you can't actually fit any stock size CC inserts in there. I think it's somewhere between 1.75" and 2". I tried 2" CC inserts and they wouldn't fit.