Drilling out stock mufflers
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Road Warrior
Joined: Apr 2018
Posts: 1,347
Likes: 820
From: Moneta, Virginia
So I pulled the left side muffler and drilled 4 - 1/4 holes around the outside of the opening on the inlet side. I dont have a bit long enough to reach the center plug. I also drilled 4 holes in the outlet end of the muffler in the center plug.
The right side mufflers inlet is all together different. It has a folded mesh type inlet screen, I couldnt keep the bit from walking to drill holes in the perimeter steel around the mesh, so no mods to the inlet end. I drilled 4 holes in the outlet center plug.
I took it for a quick run; it has a tad bit louder & deeper exhaust note and runs the same I think Im going to remove the plug on both outlets.
Thanks for everyones input.
The right side mufflers inlet is all together different. It has a folded mesh type inlet screen, I couldnt keep the bit from walking to drill holes in the perimeter steel around the mesh, so no mods to the inlet end. I drilled 4 holes in the outlet center plug.
I took it for a quick run; it has a tad bit louder & deeper exhaust note and runs the same I think Im going to remove the plug on both outlets.
Thanks for everyones input.
Stellar HDF Member
Joined: Jun 2007
Posts: 2,178
Likes: 600
From: SoCal.....I'm only here for the weather
You sir are a moron!
The V&H mufflers that the po installed, made the bike pop badly on deceleration, robbed the bike of power and they are too loud and sound shitty so, it did not come with a quality set of slip-ons!!
I like the way the bike performs with the stock mufflers, but would prefer they be a bit louder. If you had ANY reading comprehension you would know I am NOT going full ghetto.
If you have no experience to add to the conversation, take a big gulp of shut the ***k up and move on.
The V&H mufflers that the po installed, made the bike pop badly on deceleration, robbed the bike of power and they are too loud and sound shitty so, it did not come with a quality set of slip-ons!!
I like the way the bike performs with the stock mufflers, but would prefer they be a bit louder. If you had ANY reading comprehension you would know I am NOT going full ghetto.
If you have no experience to add to the conversation, take a big gulp of shut the ***k up and move on.
Seasoned HDF Member
Joined: Dec 2009
Posts: 17,684
Likes: 6,062
From: Niagara, Ontario, Canada
Seasoned HDF Member
Joined: Jan 2009
Posts: 12,689
Likes: 8,295
From: Ottawa, Ontario
Originally Posted by kel03
Probably one of these or similar https://on-bike.com/
Tourer
Joined: Aug 2021
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From: NC Mountains
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Tourer
Joined: Aug 2021
Posts: 449
Likes: 197
From: NC Mountains
So I pulled the left side muffler and drilled 4 - 1/4 holes around the outside of the opening on the inlet side. I dont have a bit long enough to reach the center plug. I also drilled 4 holes in the outlet end of the muffler in the center plug.
The right side mufflers inlet is all together different. It has a folded mesh type inlet screen, I couldnt keep the bit from walking to drill holes in the perimeter steel around the mesh, so no mods to the inlet end. I drilled 4 holes in the outlet center plug.
I took it for a quick run; it has a tad bit louder & deeper exhaust note and runs the same I think Im going to remove the plug on both outlets.
Thanks for everyones input.
The right side mufflers inlet is all together different. It has a folded mesh type inlet screen, I couldnt keep the bit from walking to drill holes in the perimeter steel around the mesh, so no mods to the inlet end. I drilled 4 holes in the outlet center plug.
I took it for a quick run; it has a tad bit louder & deeper exhaust note and runs the same I think Im going to remove the plug on both outlets.
Thanks for everyones input.
With my homemade rig on the left side It doesn't restrict much if ANY exhaust espically due to the majority exiting the right side anyway. When I was told about this the Indie shop I go to said to hold my hand s down at the muffler and there is a big difference. That right side prrovides the least resistance cause that crossover has 3 more turns to make before it exits.
Another note of intrest, when I was advised to look that modified freeze plug over. It is actually a knock off a product sold by Zipperes called "Pop Stopper". price was well worth it but even asking nicely, the shipping remained at 32.00 as I recall for a 4.00 part. So this isn't just my hair-brained hack, another reputable business had come up with the design and seems to work well enough for them to be on the market.
I think clearing that right side muffler will be real helpful.
Luck favors the Brave and the Foolish.
Thread Starter
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Road Warrior
Joined: Apr 2018
Posts: 1,347
Likes: 820
From: Moneta, Virginia
After drilling the 4- 1/4 holes in each exhaust end plug, I decided to go a bit larger and drilled a 1/2 hole in each. This is the best configuration by far. It has a nice low sound, that is not annoyingly loud, and maybe a bit more power than the stock unaltered mufflers
no popping on deceleration!
Thanks again
Thanks again
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