Drilling mufler

[Bruce B]

I like your mod. Did you fab the tip or is it off the shelf. Fabricator = one who makes stuff you do not have.:roflblack: My dealer gave me a muffler and told me to see what I could do with it. I still have the prototype. The one in mt pix is the final product I run now. Did you open the bottom and free flow yours? I love keeping the naysayers in a tiff. Ride on!:riding:

Yes I fabbed the end love making things you cant buy, no I didn't open the bottom up no need to once you cut the end off you can do enough from the rear without making it to load.

 

[Deer Slayer]

Being serious, someone did post some photos of the inside of the muffler here. I forget who it was.

After seeing the photos, it did not seem viable to drill since the baffle did not appear "conventional" It had some kind of odd shaped diffuser that I thought the guy removed.

Not quite a Flowmaster copy, but maybe a little bit similar?

It is a plumbers nightmare in the stock muffler. I cleaned mine out with a plasma torch. I do not think a drill would do much good. By cleaning out the inside, makes the empty space produce a deep tone.:riding:

 

[Deer Slayer]

Yes I fabbed the end love making things you cant buy, no I didn't open the bottom up no need to once you cut the end off you can do enough from the rear without making it to load.

Thanks for the info. I retired from Welder repair. I was a field Eng for Miller, Hobart, Lincoln and ESAB. Also robot welding and water table cutting. I love retirement!
:riding:

 

[KID Ryker]

lower tone

If I used a foot long 1" drill bit, into both muffler exhaust outlets, could i deepen the sound of my F3? or at least get it louder?
Anyone have an audio on this?

My wife has a 2015 f3s and so does her sister. Her sister put a Cat bypass pipe on hers a little too loud for my wife. This weekend I remove her 1st muffler which has the cat in it. With out cutting any holes I remove the cat from the muffler.What I got was a low tone out of the f3.

 

[Michaelscs]

My wife has a 2015 f3s and so does her sister. Her sister put a Cat bypass pipe on hers a little too loud for my wife. This weekend I remove her 1st muffler which has the cat in it. With out cutting any holes I remove the cat from the muffler.What I got was a low tone out of the f3.

How did you remove the cat from the muffler?

 

[KID Ryker]

cat remove

How did you remove the cat from the muffler?

sent you a pm with my phone #. Takes a little time. Get a rod - a long drill bit - beat and drill it out. Going home after work for a test ride, be able to tell what I think and more on the sound.

 

[nixhl]

I added the cat delete, sounded good but a little too loud/raspy tuner car sounding for me. A lollipop baffle mounted at the inlet of the secondary muffler made me happy. i used a washer with 5/16 id and 3/4 od welded to a 1/4 inch bolt and centered in the pipe. Lowered the tone and gave me the low to mid range power power back that was missing. If you look at the big city thunder baffles, many of them use this.

 

[pauly1]

The 2015 F3-S mufflers are straight-through perforated tubes. Your drill bit wouldn't hit any metal until it touched the forward-facing end of the can. Shine a flashlight into the end and have a look.

I've cut the end off, removed the heavy fiber glass packing and all internal plates, baffles, tubes, etc., then welded the end back on and painted. Gets a bit more raspy than stock. I have also removed the honeycomb structure at the inlet of the primary muffler.

SpyderDeb and I both like the sound and it looks stock.

My 103 cu. in. '13 FLHTK has had the obligatory intake and exhaust mods, and a 255 cam set. It will rattle the spoon rack inside the house. It's redline is ~6500 rpm. The torque curve hits 105 lb*ft just above 2000 rpm and pulls like that until 3500 when it starts to drop off noticably and works on generating its 85 hp around 6000. My F3-S will never sound the same - about 1/2 the displacement at each power pulse and runs at so much higher rpm. When the 103 hits 4000 rpm and up, it don't sound like a H-D anymore.

Wayne