take about a 14 inch drill bit and drill up in the hole at the end it makes it a little louder and more power

Something about the Pfft, Pfft, Pffft out of the muffler doesn't do it for me either.   I bought a Harley Dyna muffler off Ebay, actually got the complete exhaust system from engine to muffler. Both pipes, both mufflers, all heat sheilds, mounting brackets, etc.... for $12.50 Waiting for after my road test next week before I install it.

I didnt want it to sound like a V twin. But, I sure didnt like it sounding like my Moms sewing machine, nor did I like the backfiring, so, I stuck a Supertrapp on it, with 14 disks. Now, it scoots along & I recently passed a Radar installation by the road & I saw my speedo is slower than the radar said, soo,, I think I actually made the Ton a few months back when I saw 94 on the dial... No way with the stock setup...

Demin wrote on 07/22/08 at 13:20:37:


Exactly. I would like mine to sound more like a motorcycle than my wifes 49cc scooter. The little Pfft, Pffft noise does not go with the bike. And if I wanted a V-twin, I would have bought a V-twin. The sound of a single with a muffler that actually lets the engine exhale is fine by me.

Demin wrote on 07/22/08 at 13:20:37:


Can someone tell me what model Harley muffler works well with our bikes?

To answer your original question, can the stock muffler be made louder... Yes it can.  I removed the back plate from the muffler, which is held on by four rivets.  Just drill those out.  Then pull that plate out.  It has a cage full of fiberglass attached to the back of it.  You may have to wiggle the plate up and down, side to side a little to get it to come out.

Once it is out, you can gradually make things louder by A.) Removing the fiber glass from the little cage.  B.)  Using a long bit extender and a drill bit to drill holes in the baffle up front.  C.) Drilling said holes and then leaving the back plate off entirely.

To reattach the plate, if so desired, you can drill appropriately sized holes where the rivets were and then use lag screws to fasten it in place.  I carried mine around with me for awhile, putting it in whenever I thought I might bother someone by being too noisy.  Then I figured "Joke 'em if they can't take a screw."  The plate and little cage thingy are sitting on a shelf in the shed getting rusty now.  

The bored out stock muffler doesn't sound as nifty as some of the after market ones out there, but I think it sounds a lot better than the tinny, quiet, unadulterated version I had before.  Then again, I'm not all that picky.  I've noticed no one wants to drive their car next to me in traffic anymore.  I like that.  

I posted pictures of some of this stuff awhile back in a thread entitled "This muffler is screwed!"  Can't remember how long ago that was, but a search should turn it up.

Very informative!