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General Category >> Rubber Side Down! >> anyone else disappointed with the dyna muffler??
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Message started by pyke13 on 08/08/16 at 14:01:26

Title: anyone else disappointed with the dyna muffler??
Post by pyke13 on 08/08/16 at 14:01:26

i changed my muffler to the one of a harley sportster, it bolted straight on no problem. it looks better than my old muffler and the bike is running better.

so what am i disappointed about you ask? its far to quiet yet ive read so many posts about these exhausts being loud

how do i make this thing louder?
i dont want it no muffler loud but i do want it a bit louder than it is, any suggestions

Title: Re: anyone else disappointed with the dyna muffler
Post by Dave on 08/08/16 at 14:12:30

You can take a long drill and make a small hole in the steel "plug" that is located in the center of the muffler. I would start with a small hole about 1/4" in diameter....and make the hole little bigger if you need more noise.

You can use one of the stepped Uni-Bit type drills with an extension rod to get up far enough. You might need to make sleeve, or use some conduit to help you keep the bit centered when you drill the first hole. You won't have to remove the muffler to drill the hole.

Title: Re: anyone else disappointed with the dyna muffler
Post by pyke13 on 08/08/16 at 14:26:13

wont that just mess up the fueling? it did on my old exhaust. may just have to live with it

Title: Re: anyone else disappointed with the dyna muffler
Post by Dave on 08/08/16 at 14:29:57

I am not promoting "louder pipes", as I believe the DYNA muffler is loud enough to keep the general population (non-bikers) from being upset when you ride past - however you could likely get a bit more sound without being too obnoxious.

If you only drill a small hole, it should not upset the jetting too much. Start small, like maybe 3/16" or 1/4", and I would think that 1/2" might be too big.

Title: Re: anyone else disappointed with the dyna muffler
Post by stewmills on 08/08/16 at 14:58:43

Dangit...now y'all got me thinking again...which is very painful!

If I have a DYNA with the CAT that is assumingly providing a wee bit extra back pressure versus a non CAT muffler AND I wouldn't mind a wee bit more "loud" (not ridiculous loud...I don't like that either) then I can probably afford to drill a 1/4" hole in the baffle and get a little noise with no ill effects on the running/jetting? It ran perfect before and after the DYNA install. It had already been rejetted with the stock muffler for optimum running and that seemed to have translated over perfectly to the DYNA.

Title: Re: anyone else disappointed with the dyna muffler
Post by bobert_FSO on 08/08/16 at 16:39:02

I had first tried the Emgo shorty megaphone (think Ryca). That little thing was loud. I could live with it, but I didn't want to inflict it on others around me. The stock Dyna muffler was a little too quiet for me. I solved the issue with a 1/2" drill bit and an extension bit. I stuck it up the tailpipe and drilled a hole in the Dyna baffle. The result was a nice Dyna sound with just a little more bark.

Title: Re: anyone else disappointed with the dyna muffler
Post by batman on 08/08/16 at 17:00:35

I tried a 1/2" hole in a dyna with the result of haveing to rejet , as I had aready gone to larger jets and my bike was running well I changed it back. I think if your are going to drill you should do as Dave advised and start with a very small hole and test ride before drilling larger. Be carefull of making it to loud you may want to hear your grandkids call you "poppy" someday!

Title: Re: anyone else disappointed with the dyna muffler
Post by Kris01 on 08/08/16 at 19:32:11

666F7D73160 wrote:

its far to quiet yet ive read so many posts about these exhausts being loud

Where? All the people that have 'em say they are slightly louder than stock, not loud. I have one and it's loud enough.

Title: Re: anyone else disappointed with the dyna muffler
Post by zipidachimp on 08/08/16 at 21:47:27

stock dyna is perfect compromise between loud/not loud ! plus it looks cool ! 8-)

Title: Re: anyone else disappointed with the dyna muffler
Post by batman on 08/10/16 at 15:07:36

PYke, I remember now ! Your the guy who had to pop rivet the holes closed in your stock muffler to get your bike to even run! Now your heading back into that realm again? Shame ,Shame!

Title: Re: anyone else disappointed with the dyna muffler
Post by pyke13 on 08/11/16 at 14:56:02

nope nope, been there done that. not going there again

Title: Re: anyone else disappointed with the dyna muffler
Post by pyke13 on 08/11/16 at 14:58:55

once bitten twice shy n all that, it wasnt me suggesting to drill holes in the baffle plate this time. anyway ive got bigger bike issues to worry about atm!!

im guessing there shouldnt be oil spraying onto my left shin. think im going back to 4 cylinders

Title: Re: anyone else disappointed with the dyna muffler
Post by batman on 08/11/16 at 17:14:35

Pyke ,just a guess left shin! could be coming from the head bolt,the nut dead center in the front U N D E R side of the head just where the head and cyl. meet. (clean of the oil put on some high temp rtv,torque to 20 ftlbs.) And don't be trying to get 60mph out of second gear it takes the oil pressure to the moon,hence oil leaks!

Title: Re: anyone else disappointed with the dyna muffler
Post by Yoshi on 08/11/16 at 18:09:14

I used stock for little while then wanted louder so I got a Jardine.
I got bored so I debaffled the jardine...
https://youtu.be/A5ZwoH_GxfU
i put the baffle back in then sold it.
I bought the dyna but it was definitely too quiet so I stepped up to a Mac perforance, full baffled sound great..
https://youtu.be/ct0gefwRxAY

Sold the bike but still trying to get rid of the slipon
http://i57.photobucket.com/albums/g214/VduBpl/For%20Sale/20150901_203122_zps6v2mgiog.jpg

Title: Re: anyone else disappointed with the dyna muffler
Post by pyke13 on 08/13/16 at 05:18:23

4340554C404F1519210 wrote:

wasnt 60 in second thats caused it, even though i do ride her hard.
think its more the 280 mile round trip sitting at 70-75 all the way.

the oil is leaking from where the head meets the barrel. i was thinking blown head gasket but its running fine so im a bit confused by it. will start a thread about it and post pics as soon as i work out how to do the pics

Title: Re: anyone else disappointed with the dyna muffler
Post by ohiomoto on 08/13/16 at 06:34:35

Sounds like the plug is leaking. No need to start a thread when there are several good ones out there already. I fixed mine last week. Took me about 3 hours.

Title: Re: anyone else disappointed with the dyna muffler
Post by batman on 08/13/16 at 12:07:48

Pyke ,that's the area I was talking about, there are 6 head bolts 4 that come from the case up through the jug and head ,but 2 go from the head down through the jug (short studs )in the center front and back ,that's where your leak may be coming from .Ohiomoto ,could be correct the head plug could be leaking and running across the fins then flying off .You need to clean the motor off,and refire it to find out where the leak starts.(blown head gaskets aren't the norm on these low compression motors)