Just installed the RSR muffler, man it couldn't get any easier.
2 bolts 2 hangers....a total of about 15 minutes to remove the oem and put on the new.
This muffler sounds great!
I cant really tell about any HP gains yet but it feels more Torquie, the tires spun on the test drive where they didnt before.
I can imagine how loud it would be with the midpipe and header, and if you are considering that route, you might want to go with the RS duals...it would be wayyy to loud IMHO.
The kind that gets the wrong attention.
But overall I am really happy with it, the price was good, very nice quality as expected from Good-Win, and install couldn't be easier.
I can't wait for it to break in a little :)