I'm wanting to do the Hartman mod (A La Mark K) on my 2006 Boulevard. I tried to reference the link for it, but since it's my first post, I'm not allowed. I'm sure somebody here knows what I'm talking about. Basically, you take out the internal baffle of the stock muffler, and leave the external one that surrounds it in. From the sound sample I've heard on You Tube, it give it a nice bassy thump. It looks fairly straight forward to do, but no where do I find whether or not this requires a rejetting of the carburetor? Let me know if any of you have done this, and if you have any sound samples of your own. I also need a left side cover for it. they seem to be hard to come buy, because of it being realitively new.

The Hartman? Im just NOw figgerin out what the Heimlich is.

Yea, thats cool & all, but the Zuki muffler weighs a ton. Im glad mines gone.

we both have a supertrapp if I remember right.

most people say they are done at 80/85, i do that uphill.

I did the Hartman mod on my '02's muffler. It was a lot of work and you need to weld the center of the muffler back in the gutted shell. Save yourself some time and effort and just go out and get a sporty muffler and drill out the baffle with a 3/8 or 1/2 bit. Either way you will need a main rejet for the carb and unless you are in love with the big can that comes with the bike a muffler swap is just easier and less work. Just my .02 cents on it.

If you have a stock muffler in good shape, leave it that way.

Some states are going with mandatory Db testing and soon we will be asking from some of these states "anybody got a stock muffler I can borrow?"

They may get shipped around from person to person so annual testing can be done and passed.

$20 will buy you a take off Harley Dyna Muffler, which is a pretty good muffler for our bikes (I run one on the fastest Savage on the East Coast).  

It is much less trouble than drilling out (and ruining) a good stock muffler which may be quite useful to the list as a whole in its present state.

Dunno -- most states that have gone completely anal on us want the OEM spec muffler on the bike and it has to also sniff good for CO2 and hydrocarbons to meet the pollution control year spec for the bike.

We'd best not be scrapping out all the stock mufflers ....

I went through a listened to the sound samples. I liked the sound of the Bad Dog over all the rest, but I would imagine it would be incredibly loud. The Jardine was decent, and I liked the Mac Slip on probably the best. Some of the others had a real nice sounding idle, but sounded awful revved up. Others sounded great revved up, and awful on idle. A couple of them sounded like you were listening to a 3 1/2 HP push mower with the muffler rotted off. I like the low thump idle with the low growl rev. I would love to have a bunch of the bikes side by side with the various configurations, and be able to say, "I'll take that one!" I read through the carburetor rejet scenarios, and that seems to be a nightmare. I need a so & so size on a leap year with a full moon, using a thatch Samoan made pot holder for an air filter, while sending it all through a 1" aluminum curtain rod half full of course brillo pads for a muffler! Good God! It looks like as long as these bikes have been out there, there would be something a little more comprehensive on the subject. Then, there's the subjectiveness of what sounds "good". The Dyna sample in the string of samples, I'd be embarrassed to have my 15 HP Wheel Horse sounding like, but the Screamin' Eagle, and the Dyna After Market Turnout samples at the bottom of the page, sounded pretty decent. So now, are we just talking recording quality? It would be nice to know how the bikes are set up that have the Bad dog, and Mac Slip on, to at least have a base line.