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2009 head pipe vs 2010/2011 head pipe

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Old Nov 21, 2010 | 07:46 AM
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Port Dawg's Avatar
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Default 2009 head pipe vs 2010/2011 head pipe
Is a 2010/2011 head pipe that has had the cat gutted from it the same header pipe as a 2009?



So in other words a 2010/2011 bike with a gutted cat should sound and have same noise level as a 2009 bike?
 
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Old Nov 21, 2010 | 07:47 AM
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Pretty close, but I believe they also relocated O2 sensors w/'10-'11's. Other than that - they should be same...
 
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Old Nov 21, 2010 | 07:51 AM
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Not the exact same. The difference is O2 sensor size and location.
 
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Old Nov 21, 2010 | 07:53 AM
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Originally Posted by Iceman24
Pretty close, but I believe they also relocated O2 sensors w/'10-'11's. Other than that - they should be same...
Yes, the 2009 models have different size O2 sensors. If you use a 2009 head pipe with your Auto-Tune, remember to get the model for the 2009 head pipe so the O2 sensors will fit.

Cale
 
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Old Nov 21, 2010 | 08:22 AM
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Other than the o2 sensors is the pipe the same though? A 2010/11 pipe is a 2009 pipe structure wise just with a cat stuffed in there?
 
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Old Nov 21, 2010 | 08:50 AM
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Same head pipe size and shape, O2 sensors diff size an location
 
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Old Nov 21, 2010 | 08:57 AM
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Ok sounds good...I just got a 2010 headpipe without the cat in it, just wondering what sound I should expect with the stock mufflers, my guess is like a 2009 Road King that has the stock setup?
 
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Old Nov 21, 2010 | 09:01 AM
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Originally Posted by Port Dawg
Ok sounds good...I just got a 2010 headpipe without the cat in it, just wondering what sound I should expect with the stock mufflers, my guess is like a 2009 Road King that has the stock setup?
Should be identical on sound as long as the 09 is not a California bike. Their 09's had the cat.
 
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Old Nov 21, 2010 | 10:16 AM
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Thanks James! My guess is maybe a tad bit louder without the cat in there, will be going on my 2011 (2010 head pipe, no cat)
 
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Old Nov 21, 2010 | 10:47 AM
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My guess would be that it will be some what louder as the 2011 OEM mufflers would be less restrictive to allow for better flow with the cat.

I have a set of both 2009 and 2011 and there is with out a doubt a different baffle design with more perforation in the 2011.
 
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