removing baffles - Harley Davidson Forums: Harley Davidson Motorcycle Forum
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post #1 of 4 (permalink) Old 12-10-2012, 10:29 AM Thread Starter
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Location: SE Oklahoma
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removing baffles

Well I solved all my wants/needs for performance on my FatBoy by trading it in on a Street Glide that already had that stuff done to it. But I don't like the sound. It has the SE slip-ons.
I am hoping that I can either take the baffles out of them or change the baffles to something else. But is either of those options going to do anything to the tune??? Won't taking the baffles out, mess up the back-pressure?

this bike has had SE255 cams, SE/AC, and been dynoed.

I don't want to mess up the tune on the bike, but I really want it to be a bit louder. Any suggestions would be appreciated.

Mike Hutchings Broken Bow, Ok.
2012 Street Glide
SE - Ventilator AC, 255 Cams, Race Tuner
V&H - Power Duals, Hi-Output Slip-Ons
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post #2 of 4 (permalink) Old 12-10-2012, 02:47 PM
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Removing your baffles will likely require a retune...that really messes with the back pressure.

If you listen to some other mufflers and inquire as to the manufacturer of some that you like, you're more likely to better match the backpressure your present pipes have and not hurt your tune as much. But it will still effect the tune...that is unavoidable.

Do a search for FULLSAC. Steve, at FULLSAC, can remove your muffler cores and install new cores of his own design. Some guys like the sound of those and if you discuss it with him, he can probably provide some with a similar backpressure to the mufflers you're running now.
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post #3 of 4 (permalink) Old 12-10-2012, 03:13 PM
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Removing baffles is bad. You need something significant enough in an exhaust to effect the sonic pulses and to keep exhaust velocity up. Not only do baffeless pipes sound like ass to me, they will reduce midrange torque. You can REDUCE baffling but not eliminate it. Determine the diameter of your Raffles and then go to

When the going gets weird, the weird turn professional.... ~ Hunter S. Thompson~

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post #4 of 4 (permalink) Old 01-01-2013, 09:51 PM
Join Date: Dec 2012
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Will putting head cones in after taking out the baffs balance out the pressure? That's what I did on my rocker c. I put v&h big radius 2 into 2s on it while upgrading it (super pro tuner download/ breather) and didn't like the sound so I took out the baffs and put head cones in. So far no lights bugs etc. Am I ok?

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