Personally, I would not recommend messing around with the Stock Exhaust by trying to punch holes in it.
?
Having traveled behind a couple of W650¡¯s in the past, they have a ¡°Great Note¡±.
Mine seems to haven gotten louder over time, sound great, no longer backfires.
The bike also seems to warm up quicker than it used too when I first got it!
2000 W650 ¡°Stock¡±
87,000 Klms,
Chris Spence, St.Catharines , Ontario. Canada.