Vibrations after new head pipes help.
Thread Starter
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Grand HDF Member
Joined: Oct 2010
Posts: 4,618
Likes: 290
From: Johnstown, PA
If you checked the bike when it was up on the jack I'm sure everything looked like it had clearance. You should recheck everything once you lower your bike onto the ground. Sometimes it's as simple as a worm gear strap bolt touching the frame or the right muffler rubbing the axle nut.
the rain stopped and the roads dried up a bit, and just took it for a ride and there is no difference from my reinstall. The vibrations/buzzing is the worst between 2000-3000 RPMs. Its tolerable under 2K or above 3K.
I am positive that this started since the new pipes, but now Im questioning if I have a bad rubber mount.
I guess Im going to try to put the stock header back on to see if it goes away. That means another set of exhaust gaskets.
Very P O d with this, makes riding a source of stress, instead of being a stress reliever.
Tourer
Joined: Sep 2014
Posts: 279
Likes: 315
From: Southern Vancouver Island
You might want to loosen all the exhaust fasteners again and then re-torque starting from the front of the motorcycle and working your way back. Harleys are can be a little bit finicky with installing new exhaust and the above procedure should work.
Club Member
Joined: Mar 2009
Posts: 66,110
Likes: 51,394
From: Niles Canyon Ca.
Different pipe & flow configuration means different exhaust pulse and harmonic vibration bands, ain't rocket science. Action / reaction.
What it is, rubbing somewhere just amplifies it.
What it is, rubbing somewhere just amplifies it.
Seasoned HDF Member
Joined: Sep 2007
Posts: 9,741
Likes: 1,598
From: Danbury CT
I checked everything with the bike on the kick stand. Nothing touching.
the rain stopped and the roads dried up a bit, and just took it for a ride and there is no difference from my reinstall. The vibrations/buzzing is the worst between 2000-3000 RPMs. Its tolerable under 2K or above 3K.
I am positive that this started since the new pipes, but now Im questioning if I have a bad rubber mount.
I guess Im going to try to put the stock header back on to see if it goes away. That means another set of exhaust gaskets.
Very P O d with this, makes riding a source of stress, instead of being a stress reliever.
the rain stopped and the roads dried up a bit, and just took it for a ride and there is no difference from my reinstall. The vibrations/buzzing is the worst between 2000-3000 RPMs. Its tolerable under 2K or above 3K.
I am positive that this started since the new pipes, but now Im questioning if I have a bad rubber mount.
I guess Im going to try to put the stock header back on to see if it goes away. That means another set of exhaust gaskets.
Very P O d with this, makes riding a source of stress, instead of being a stress reliever.
Checking on a side stand is not the same as sitting on it straight up....All parts get closer together once you put it in a riding position and sit on it....Shocks compress and lots of spaces change.
I don't think it would have anything to do with the FP3 but you could always throw in another tune and see if it does the same thing. Or reload the stock tune just to check it out.
Last edited by golfblues; Oct 16, 2021 at 05:40 PM.
Thread Starter
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Grand HDF Member
Joined: Oct 2010
Posts: 4,618
Likes: 290
From: Johnstown, PA
Checking on a side stand is not the same as sitting on it straight up....All parts get closer together once you put it in a riding position and sit on it....Shocks compress and lots of spaces change.
I don't think it would have anything to do with the FP3 but you could always throw in another tune and see if it does the same thing. Or reload the stock tune just to check it out.
I don't think it would have anything to do with the FP3 but you could always throw in another tune and see if it does the same thing. Or reload the stock tune just to check it out.
I just had my buddy check all for clearances with me on the bike, and then had him sit, and I looked. Nothing is touching. Cant hurt to change up the tune to try that before I ditch them.
Its a hard pill to swallow having to take off something as pricy as these were, and go back to the stock ones with the cat heat.
Road Captain
Joined: May 2021
Posts: 504
Likes: 271
From: Anywhere, USA
After taking a break riding and speaking to the builder I surmise it's just the new pipe, cam and the 30hp jump. It took me most of the day riding but I have gotten used to it.
Running Khrome Werks 4.5 with performance baffles and the vibration is that exhaust deep drum beating sound/vibration transfer to the front end. It's like a pounding as you crank the throttle.
Is the re a cure short of a little pipe?
Thread Starter
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Grand HDF Member
Joined: Oct 2010
Posts: 4,618
Likes: 290
From: Johnstown, PA
Update:
Found some threads with people who have had similar issues on this site and other sites. Common things are what had been described here with something touching the frame or Floorboards, but I also found a few that were all tune related.
After I got home tonight, I changed the tune to the custom tune V&H gave me when I first got the tuner. It is for stock headers and my fishtail II slip ons, and was made more so to try to cool the Cat down. It is a richer tune, I can smell a difference.
it’s late, so I haven’t given it hell yet, but I can already tell a difference in how much my riders back rest jiggles around, it’s definitely less than it was with the power dual tune. This whole thing may be tune related, as I downloaded the canned tune when I put them on.
Anxious to ride it to see if there is much difference in the vibrations. If not, I will try to run the auto tune feature on the FP3. If that doesn’t fix it, I will put the stock one back on, or try to get the super radius’s welded again.
Found some threads with people who have had similar issues on this site and other sites. Common things are what had been described here with something touching the frame or Floorboards, but I also found a few that were all tune related.
After I got home tonight, I changed the tune to the custom tune V&H gave me when I first got the tuner. It is for stock headers and my fishtail II slip ons, and was made more so to try to cool the Cat down. It is a richer tune, I can smell a difference.
it’s late, so I haven’t given it hell yet, but I can already tell a difference in how much my riders back rest jiggles around, it’s definitely less than it was with the power dual tune. This whole thing may be tune related, as I downloaded the canned tune when I put them on.
Anxious to ride it to see if there is much difference in the vibrations. If not, I will try to run the auto tune feature on the FP3. If that doesn’t fix it, I will put the stock one back on, or try to get the super radius’s welded again.
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Thread Starter
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Grand HDF Member
Joined: Oct 2010
Posts: 4,618
Likes: 290
From: Johnstown, PA
Ran the old map , was a little better with the vibrations but not better enough to be happy. So I ran the auto tune for about 225 miles. Its a little better now, at least it doesnt feel like my feet are on one of those vibrating foot massagers. But now having bog down issue when throttling down at highway speeds.
Just not sure what I'm going to do.
I know one thing, I am regretting buying the power duals. Just too many issues that I dont have time to mess with.
Just not sure what I'm going to do.
I know one thing, I am regretting buying the power duals. Just too many issues that I dont have time to mess with.