Baffle drilling?
Ultimate HDF Member
Joined: Jan 2008
Posts: 7,476
Likes: 5
From: Republic of Texas
RE: Baffle drilling?
It was easier to remove the baffles out of the SE mufflers and just drill the side holes out till I got the tone I was looking for. Then I had to rejet to make the bike richer.
RE: Baffle drilling?
Used a 3' piece of rebar and a sledgehammer on many stock mufflers. {Make sure to have someone sit on your scooter when you whack it though.} As far as losing pressure it will run just a smidge on the lean side, but if you don't change the air intake it won't need to be rejetted or EFI reprogrammed.
Big Kahuna HDF Member
Joined: Mar 2007
Posts: 29,598
Likes: 19
From: Oregon
RE: Baffle drilling?
ORIGINAL: SpeedsterX
Non-bristle side in first! LMAO!!
ORIGINAL: txfxstrider
Which direction did you go with the broom handle?
Which direction did you go with the broom handle?
 \\;
Tourer
Joined: Jun 2007
Posts: 251
Likes: 9
From: New Mexico
RE: Baffle drilling?
I have an 07 lowrider with the centers punched out. \\; Shortly after I had a dyno run and AF ration was as close to perfedt as could be. \\; Bike sounds a bit better. \\; No recommendations here just my experience.
NMR
NMR
Cruiser
Joined: Jul 2008
Posts: 103
Likes: 0
From:
RE: Baffle drilling?
take off the rear section of the exhaust remove any screws or rivets and knock the baffles out with steel rebar or pipe. then either leave them out or cut them in half and put em backin.It will sound bad *** and run fine. \\;
Advanced
Joined: Nov 2012
Posts: 50
Likes: 0
From: AZ
Were you pleased with the resulting sound?
I've considered drilling my twin pipes on the fatboy. How do you think they would sound? Do you get any fuel odor from the pipes after the mod?
Thanks
Thanks
Probably have a plug about half way in. do this w/the pipes on the bike. Get a metal cutting hole saw the same diameter as the ID of the baffle in the muffler. also probably need a drill bit extension. Put it together on a good drill w/a little grease on the cutting teeth. run it up inside the muffler till you hit the plug and start drilling. The bit will drill a pilot hole through the plug and the saw part will cut the plug out. Used the same procedure on the factory mufflers on my 94 FXDL, and my 08 FXDF. Worked fine both times, no problems.
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Used a 3' piece of rebar and a sledgehammer on many stock mufflers. {Make sure to have someone sit on your scooter when you whack it though.} As far as losing pressure it will run just a smidge on the lean side, but if you don't change the air intake it won't need to be rejetted or EFI reprogrammed.
