Re: Muffler inlet/outlet size
I did some measuring and discovering something quite interesting. After the Cat/resonators there is a bolted flange point before continuing on to the muffler. The pipe on the cat side measure 3" OD while the pipe on the muffler side measures 2.5" OD. There doesn't seem to be much of a reducer going on either, just a 3" pipe bolted up to a 2.5" pipe. So, I went with a 3" in/out muffler, bye bye bottle neck.