I had a local muffler shop install two 30inch steel pack mufflers with 2" aluminized steel pipes to my 235 with original Fenton headers, last December.
$400 including mufflers - pretty good for So-CA.
The steel packs have spiral pattern louvers which helps reducing back pressure.
I got the 2" pipe ends at a 45% angle facing down.
The sound is warm and mellow with a nice boomy bottom end.
They are quiet at warm-up and idle, but start to growl at medium to higher rpm.
Somebody told me that steel packs take longer to break in than glass packs, but are louder in the end.
It seems like they got more brittle sounding after a few hundred miles.
Right now it sounds alright going 70 on the freeway. Not loud or annoying at all on longer trips.
I like it best around 45-50, but I am looking forward if they are gettin' louder... :p
I just love the idea of an AD flying down the road, sounding like a giant bumble bee... :rolleyes:
