Posted by Hekto on July 26, 2003 at 08:11:23:
In Reply to: Hartman Mods posted by JD on July 25, 2003 at 17:30:40:
The problem is the 1'st chamber in the muffler, that has a pipe with a far to small diameter. Something like 10-12mm I think.
I tried to dismantle the muffler, but didn't sucseed. Instead I drilled up the already made holes to 14mm. This says 4 x 14mm holes in the back plate.
It doesn't give any rise in performance, but never mind. The sound gets a lot deeper, but is not to loud.