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Old Jan 19, 2020 | 06:42 AM
  #21  
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Originally Posted by deadhead948


Not much into baggers or twinkies, but that is a sharp looking bike!!!
 
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Old Jan 19, 2020 | 12:18 PM
  #22  
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Originally Posted by PoCoBob
I ain't buying that the second pipe is just for looks. Maybe at idle and low rpm there's enough pipe for both cylinders to exhaust out one side but the air will always take the path of least resistance. Once the rpm goes up those pipes will be working evenly.
if your theory about the exhaust following the path of least resistance is correct, then why would that theory not apply at idle and low RPMs? Is your theory based on anything more than supposition or do you have any data to support it?
 
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Old Jan 19, 2020 | 12:59 PM
  #23  
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Originally Posted by turbotom1052
if your theory about the exhaust following the path of least resistance is correct, then why would that theory not apply at idle and low RPMs? Is your theory based on anything more than supposition or do you have any data to support it?
It's not really a theory. it's grade 8 physics. I assume at idle there's not enough volume trying to flow through the exhaust to create any resistance.
 
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Old Jan 19, 2020 | 09:49 PM
  #24  
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Originally Posted by deadhead948
As I said, other bikes did not do this but this is my first touring model. Sounds like a touring family thing. You're correct on the 2-1-2 but they are true duals. I'll bring it up next time I'm at the dealership. At the very least they can give me a little insight as to why this is normal.

Vance & Hines Power Duals
those are nice looking pipes but they are not true duals.right at the X is where the pipes intersect,at the lowest point is where condensation builds after sitting and cooling off, which is at the X pipe . if they were true duals each cylinder would have its own pipe. also true duals both pipes are the same length. those are 2 into 1 into 2 almost like oem pipes. those dont have a cat in there, but they do have holes for the O2 sensors. i will go to Vance & Hines site and check them out, just to make sure iam correct. back shortly..
 

Last edited by IBE; Jan 19, 2020 at 10:27 PM.
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Old Jan 19, 2020 | 10:02 PM
  #25  
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these are true duals look at the difference?? these are right off the Vance & Hines site. yes i was correct
 

Last edited by IBE; Jan 19, 2020 at 10:16 PM.
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Old Jan 19, 2020 | 11:18 PM
  #26  
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Originally Posted by PoCoBob
I ain't buying that the second pipe is just for looks. Maybe at idle and low rpm there's enough pipe for both cylinders to exhaust out one side but the air will always take the path of least resistance. Once the rpm goes up those pipes will be working evenly.
Nope. Because of the bend and the extra length of the left side pipe, it's never going to flow as much, or the same, as the straighter, shorter right side pipe.
 
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Old Jan 20, 2020 | 09:34 AM
  #27  
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'17 SG here....when i first fire it up, the exhaust is a little smoky...i have a two in one Stage I SE exhaust
 
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Old Jan 20, 2020 | 09:39 PM
  #28  
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now that i cut the cat out of the oem pipes, the coking affect on the pipes is way beter, but its still there some what just not as bad. a true duel should not have this problem. if it does then there is something wrong in the motor. whether it be in the cylinders ,rings, or valve train. a very simple psi test will give up the information. must be wet and dry
 
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Old Jan 20, 2020 | 10:16 PM
  #29  
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Originally Posted by IBE
.right at the X is where the pipes intersect,at the lowest point is where condensation builds after sitting and cooling off, which is at the X pipe . .
That make sense. That bottom section does go to the left muffler. It just seemed odd to see exhaust coming out one with nothing coming out of the other. Between that and the one muffler getting dirty while the other stayed clean, I thought something might be wrong. Thanks for the help.
 
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Old Jan 20, 2020 | 10:21 PM
  #30  
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any time brother its just what it is supposed to do. get true duals and that will go away. but the set up you have is great. personaly i wouldnt change a thing
 
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