I'm aware there are subtle physical differences between the Interstate and Tourer/Standard OEM exhaust. My question is whether the Interstate exhaust is quieter?
When I first got my Tourer, it's pipes were rusty, dented, drilled and hacked - just awful. I asked the same question then, the
first set of decent pipes I had a chance to get were Interstate pipes. I definitely think Interstate pipes are quieter than
Tourer pipes and it only makes sense, with the longer piggies and tips... but when I changed over to the pristine brand new
set of Tourer pipes I got for about $200 (insert maniacal laugh here) I added Honda Line triple tips, so that
might be why
I think Tourer pipes are a little louder than Interstate pipes...

-Mike