ordered the 22" slash cut from delkevic and it should be here tomorrow.  so we should be able to compare looks/sound of the 18" vs the 22"

so it came in yesterday, i was impressed with the quality of the wields etc.
it has 2 removable baffles, one large one and a smaller inner one in the front of the muffler. the net result is if i take out the large one its a fully open straight pipe, if i take out the little one its basically a baffled straight through muffler kinda like a cherry bomb glass pack.  
went for a test ride with all the baffles in and it sounds REALLY good, its a little loud but only if i really get on it. when cruising at 45mph it has a nice thump. my butt dyno says it runs better, seems to have more grunt at higher rpm.
the installation took me a little while as there are NO instructions on the brackets etc but once i had the rear bracket wrong way around it all fit perfectly.
when i get a few minutes ill take a video and get it uploaded somehow.

ok, here is a short video. im in a apartment complex so i could not really get on it to much. its also cold so a bit louder then when its warmed up.
https://youtu.be/xc0pw__WKKI

Definitely not as loud as the shorter pipe, as expected.