Exhaust question: SE vs. True Duals
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Grand HDF Member
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From: Southern Virginia
Exhaust question: SE vs. True Duals
Howdy all,
I have a 2010 Ultra Classic that I bought a few years ago that the owner had put Rinehart True Duals on. He also gave me the stock exhaust system with Screamin' Eagle mufflers on it.
As time has gone by I have really gotten tired of the noise from the Rinehart system. It just radiates noise at all rpms. When you pull a hill it gets even louder. It's so loud that if I wear my full face helmet in the winter the noise just bounces around inside to where it gives me a headache. I had thought about pulling the baffles out and wrapping them but as tends to happen the allen head screws that hold the end caps on are frozen in place and won't budge.
This gave me the idea of maybe putting the stock exhaust system back on the bike and trying it. I have my own tuner and know how to use it so re tuning wouldn't be a problem. My question is have any of y'all run both systems and could comment on the noise and performance difference between the two? I know sometimes mufflers can fool you. For example I had a good set of Cycle Shack mufflers on my 76 FLH and when I changed them out for some 2" drag pipes the noise that I actually hear while riding decreased. I guess those mufflers just radiated the noise instead of letting it all go straight out the back.
I appreciate any experience any of y'all could share. I also would like to be able to access the oil and transmission fluid dipsticks properly. The rear exhaust pipe of the Rineharts lays right on top of them.
I have a 2010 Ultra Classic that I bought a few years ago that the owner had put Rinehart True Duals on. He also gave me the stock exhaust system with Screamin' Eagle mufflers on it.
As time has gone by I have really gotten tired of the noise from the Rinehart system. It just radiates noise at all rpms. When you pull a hill it gets even louder. It's so loud that if I wear my full face helmet in the winter the noise just bounces around inside to where it gives me a headache. I had thought about pulling the baffles out and wrapping them but as tends to happen the allen head screws that hold the end caps on are frozen in place and won't budge.
This gave me the idea of maybe putting the stock exhaust system back on the bike and trying it. I have my own tuner and know how to use it so re tuning wouldn't be a problem. My question is have any of y'all run both systems and could comment on the noise and performance difference between the two? I know sometimes mufflers can fool you. For example I had a good set of Cycle Shack mufflers on my 76 FLH and when I changed them out for some 2" drag pipes the noise that I actually hear while riding decreased. I guess those mufflers just radiated the noise instead of letting it all go straight out the back.
I appreciate any experience any of y'all could share. I also would like to be able to access the oil and transmission fluid dipsticks properly. The rear exhaust pipe of the Rineharts lays right on top of them.
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I have no experience with Rinehart exhaust systems other than hearing them on other bikes. Compared to my Screamin' Eagle Street Cannons, they are louder. Not in a bad way, just louder. In fact, I like the way Rineharts sound.
I have the stock head pipe (including catalytic converter) with Street Cannons on my '14 Limited and, though they aren't as loud as Rineharts, they do make a nice sound, in my opinion. I put up a video in this thread if you want to get an idea how they sound. If your stock head pipes don't have a catalytic converter, your Screamin' Eagle mufflers may be louder than mine.
I have the stock head pipe (including catalytic converter) with Street Cannons on my '14 Limited and, though they aren't as loud as Rineharts, they do make a nice sound, in my opinion. I put up a video in this thread if you want to get an idea how they sound. If your stock head pipes don't have a catalytic converter, your Screamin' Eagle mufflers may be louder than mine.
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Grand HDF Member
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From: Southern Virginia
SE's are pretty quiet. Try with the Rineheart head pipes
Thanks for that video Tex, my Rinharts sound at cruising throttle about like yours do when you are getting into it. The stock headpipe I was given has the cat in it. I am a little concerned about losing performance but I figure since the stock header has a crossover in it maybe it will be about the same.
I thought about removing the cat to gain performance and lose some heat but I found out that when doing that with the stock head pipe the OS sensors will get cross talk and can cause problems with tuning. There is a divider in the cat assembly that keeps them separate. When you take that out the sensors are only about an inch away from each other. I also heard that taking it out would make it louder.
The only part I am lacking to put the stock system back on is the crossover bracket that bolts to the transmission. I may try to tack that down on Ebay and maybe give it a shot. I see parts listed sometimes for the newer M8 bikes but I also seem to find those two part numbers referenced for older bikes so I wonder if they are the same for many years?
Also I have never monkeyed with exhaust gaskets at the head with twin cams (I have more experience with Shovels). Can they be re-used if you are careful or is it pretty easy to swap them out?
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Joined: Apr 2015
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Likes: 5,325
I can't say how much, if any, performance you'll lose between the stock header w/catalytic converter versus the true duals. You might even gain a little low end performance. As far as the exhaust gaskets, you can try reusing them. Though, if it was me, I'd install new ones. They're a PITA to install, but there are tips and tricks videos on YouTube. As far as the hinged crossover clamp, I know the one for your bike and my Limited are the same. The part number is 66861-09B*. The bolt part numbers is 3576. Good luck.
I wish I could Marky but the Rinehart pipe diameter on their header is different than Harley's. I tried to fit the SE mufflers on there but no go.
Thanks for that video Tex, my Rinharts sound at cruising throttle about like yours do when you are getting into it. The stock headpipe I was given has the cat in it. I am a little concerned about losing performance but I figure since the stock header has a crossover in it maybe it will be about the same.
I thought about removing the cat to gain performance and lose some heat but I found out that when doing that with the stock head pipe the OS sensors will get cross talk and can cause problems with tuning. There is a divider in the cat assembly that keeps them separate. When you take that out the sensors are only about an inch away from each other. I also heard that taking it out would make it louder.
The only part I am lacking to put the stock system back on is the crossover bracket that bolts to the transmission. I may try to tack that down on Ebay and maybe give it a shot. I see parts listed sometimes for the newer M8 bikes but I also seem to find those two part numbers referenced for older bikes so I wonder if they are the same for many years?
Also I have never monkeyed with exhaust gaskets at the head with twin cams (I have more experience with Shovels). Can they be re-used if you are careful or is it pretty easy to swap them out?
Thanks for that video Tex, my Rinharts sound at cruising throttle about like yours do when you are getting into it. The stock headpipe I was given has the cat in it. I am a little concerned about losing performance but I figure since the stock header has a crossover in it maybe it will be about the same.
I thought about removing the cat to gain performance and lose some heat but I found out that when doing that with the stock head pipe the OS sensors will get cross talk and can cause problems with tuning. There is a divider in the cat assembly that keeps them separate. When you take that out the sensors are only about an inch away from each other. I also heard that taking it out would make it louder.
The only part I am lacking to put the stock system back on is the crossover bracket that bolts to the transmission. I may try to tack that down on Ebay and maybe give it a shot. I see parts listed sometimes for the newer M8 bikes but I also seem to find those two part numbers referenced for older bikes so I wonder if they are the same for many years?
Also I have never monkeyed with exhaust gaskets at the head with twin cams (I have more experience with Shovels). Can they be re-used if you are careful or is it pretty easy to swap them out?
Last edited by 426power; May 15, 2020 at 07:48 PM.
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Grand HDF Member
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From: Southern Virginia
You know given that 426 I wonder how a setup would work with a de catted head pipe and the stock mufflers? I have heard that removing the cat will cause the system to be a little louder. I wonder if a setup like that would run cool and quiet but still be slightly louder than stock.
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Road Warrior
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You know given that 426 I wonder how a setup would work with a de catted head pipe and the stock mufflers? I have heard that removing the cat will cause the system to be a little louder. I wonder if a setup like that would run cool and quiet but still be slightly louder than stock.
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Thread Starter
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Grand HDF Member
Joined: Sep 2017
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Likes: 1,018
From: Southern Virginia
Thanks for the info John that is definitely good to know. I can tune the bike myself so I may try it with the cat in it and see if it runs too hot for my liking. It it does I may get a gutted pipe and stock take off mufflers off of Ebay and try them out.
The problem with any bike with a windshield is it bounces exhaust noise right back at you. My Wide Glide has short shots on it that are pretty nasty but they don't bother me at all. If I put the windshield on it that's another story. Especially if it is cold and I have a full face helmet on. It seems the noise gets in there and bounces around without the wind to sort of compete with it.
BTW how did you like the performance of the decatted header with the stock mufflers?
P.S. I forgot to ask did you just have your stock head pipe de catted or did you buy and aftermarket unit?
The problem with any bike with a windshield is it bounces exhaust noise right back at you. My Wide Glide has short shots on it that are pretty nasty but they don't bother me at all. If I put the windshield on it that's another story. Especially if it is cold and I have a full face helmet on. It seems the noise gets in there and bounces around without the wind to sort of compete with it.
BTW how did you like the performance of the decatted header with the stock mufflers?
P.S. I forgot to ask did you just have your stock head pipe de catted or did you buy and aftermarket unit?
Last edited by Hoyt 1911A1; May 18, 2020 at 05:14 PM.
Tourer
Joined: Feb 2017
Posts: 280
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From: Tennessee
I wish I could Marky but the Rinehart pipe diameter on their header is different than Harley's. I tried to fit the SE mufflers on there but no go.
Thanks for that video Tex, my Rinharts sound at cruising throttle about like yours do when you are getting into it. The stock headpipe I was given has the cat in it. I am a little concerned about losing performance but I figure since the stock header has a crossover in it maybe it will be about the same.
I thought about removing the cat to gain performance and lose some heat but I found out that when doing that with the stock head pipe the OS sensors will get cross talk and can cause problems with tuning. There is a divider in the cat assembly that keeps them separate. When you take that out the sensors are only about an inch away from each other. I also heard that taking it out would make it louder.
The only part I am lacking to put the stock system back on is the crossover bracket that bolts to the transmission. I may try to tack that down on Ebay and maybe give it a shot. I see parts listed sometimes for the newer M8 bikes but I also seem to find those two part numbers referenced for older bikes so I wonder if they are the same for many years?
Also I have never monkeyed with exhaust gaskets at the head with twin cams (I have more experience with Shovels). Can they be re-used if you are careful or is it pretty easy to swap them out?
Thanks for that video Tex, my Rinharts sound at cruising throttle about like yours do when you are getting into it. The stock headpipe I was given has the cat in it. I am a little concerned about losing performance but I figure since the stock header has a crossover in it maybe it will be about the same.
I thought about removing the cat to gain performance and lose some heat but I found out that when doing that with the stock head pipe the OS sensors will get cross talk and can cause problems with tuning. There is a divider in the cat assembly that keeps them separate. When you take that out the sensors are only about an inch away from each other. I also heard that taking it out would make it louder.
The only part I am lacking to put the stock system back on is the crossover bracket that bolts to the transmission. I may try to tack that down on Ebay and maybe give it a shot. I see parts listed sometimes for the newer M8 bikes but I also seem to find those two part numbers referenced for older bikes so I wonder if they are the same for many years?
Also I have never monkeyed with exhaust gaskets at the head with twin cams (I have more experience with Shovels). Can they be re-used if you are careful or is it pretty easy to swap them out?