If it sounds good to you, great.
I feel most people over drill the muf and ruin the sound.
1/4" holes sound about right.

I would have thought that small of a hole would have whistled. I have a 1/2 in hole drilled up in to the muffler,It doesn't sound to good but I lost a little low in power and gained some at the top.All my bikes I drilled like that accept the Goldwing, The Moto Guzzi i put different mufflers on.

A "relationship?" With a machine? I guess, if you say so. To me, a motorcycle is just another machine. Some I like better; some I don't like too much. Most get traded within a few years in hopes of finding one I like better. But - a "relationship?" I don't think so.

I think of a "relationship" as a two-way deal. Machines return nothing. They have no emotions, no soul. They are purely and simply machines.

Yes, they are just unfeeling machines -- but you are not.  You supply both emotional sides of the relationship and you enjoy what you have built and the machine does its job which is to act like a machine while you play around having a relationship with it.

=========

Ask any woman ....  they can tell you all about it.

=========

"Yes, they are just men -- but you are not.  You supply both emotional sides of the relationship and you enjoy what you have built and the man does his job which is to act like a man while you play around having a relationship with him."

=========

Skills developed in both fields of "relationship building" are useful, what you learn working with your machine will help you get along better with your spouse.  Turn about is fair play after all, if you can't manage to keep a relationship going with a machine how the heck is she going to get you to play along properly with having a relationship going on with her?  Same head skills apply.

"Isn't it all just in your head??"   Yep, but that is where you live and have your entire life too.   All the good stuff depends on somebody's head to make it work.

In May I came a dozen or so feet away from hitting 2 deer, and I promptly got into an exhaust-mod kick.  I did almost the same thing as you did, I made 6 x 1/4" holes evenly spaced around the endplate, except I didn't put a plug on the pipe as you did, if I read your post correctly.

The six quarter-inch holes in addition to the stock exhaust opening gave a louder sound at idle, not harsh, just an ominous WHOMP WHOMP WHOMP, think of the deep sound of an Apache/Huey helicopter hovering.  When I accelerated from a standstill, the sound, well, you could tell it was a low-budget solution, as it lost a bit of that ominous low-frequency sound and gained an ATV/4-wheeler exhaust sound in those midrange RPMs.  I did enjoy it for a couple weeks, and I could actually enjoy the sound of the bike at highway speeds without it being terribly loud.

Then I noticed some problems, primarily that of the air-fuel mixture becoming more lean (than it already was @ stock settings), hesitation and surging at low throttle openings, observed less of low-end and midrange torque, with more frequent afterfire on sharp deceleration, no more pops on shutoff - this time it's a loud blast.

The next step was finding out how to drill out the plug and uncover the idle mixture / pilot adjuster screw, and after many adjustments (it was getting over 8 turns out on the screw), it still was in a very lean condition, which means that lil' piston was enduring hotter temps for a sustained duration.  Not good.

The next step after that would be to re-jet and replace the pilot and main jet at the very least, but I had to throw in the towel as I'm only 25% of the way to having the bike paid off and am hesitant to do any further modification.

Some day, some day..... (shakes fist)

-Pabst

In addition to the method you and I did, there was discussion on this site of a modification of the OEM muffler called the "Hartman mod"... you could try searching for it on this site or try Googling for it.  The original writeup and pictures were on an external site.

Instead of drilling the holes in the endplate, from what I recall you'd cut and detach the endplate, pull out the cylindrical baffle/airflow restriction and modify it somewhat, then reinstall what's left and repack the muffler with fiberglass.  You'd have to do a search for the Hartman mod to get the exact details, it was from a couple years ago so set your search setting to "All Posts".  And, there was a video on YouTube I came across that featured an exhaust sound of a Savage muffler modified with the Hartman mod, or something close to it.

-Pabst

I would like a Dyna myself but I hate to waste a prefectly good muffler. How many miles do people tend to get on the stock muffler before it starts to fall out? I have a feeling the stock muffler will last a long time.