cat removal from 10 headpipe
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Tourer
Joined: May 2008
Posts: 285
Likes: 1
From: rural nc illinois
cat removal from 10 headpipe
are there any members out there that have removed the cat from there 10 headpipes. if you have, did you experience any issues with the crosstalk between the 02 sensors or any other problems with the way the bike ran afterwards. thanks
Road Captain
Joined: Mar 2007
Posts: 733
Likes: 4
From: Boerne Tx. (Gods Country!!)
I cut it in half and cut out all of the catalyst by drilling all around the edges of the catalyst with a 1/4" drillbit, then just working out the media with pliers and needlenose vicegrips.
It's not real easy, and it's messy for sure, but well worth the effort.
I also polished out all of the adhesive that is used when the catalyst is canned and all the leftover catalyst media.
I used a diegrinder and some small abraisive flap wheels for this task.
Again, not real easy but just a little labor intensive.
I rewelded the pipe and installed it on my 2010 FLTRX with a Power Commander V from Fuel Moto.
That unit came mapped for me and bypasses the O2 sensors so I just used plugs and removed the O2 sensors from the collector.
I also installed the S/E Ventilator air filter setup and am using the S/E Nightstick muffler that I originally installed.
It sounds and runs great and definetly runs cooler.
I plan to "test" with this setup for a while.
Attached a couple of pictures of my test setup.
In the second photo you will see where the O2 sensors are placed in the 2-1 collector, I'm pretty sure the 2-2 set up will be similar.
As you can see, the O2 sensors are immediately where the pipe enters the collector and the catalyst is still a ways from the collector so I can't imagine any more "crosstalk" per se because of the removal of the media.
Just my thoughts anyway.
Last edited by txrarebear; Nov 17, 2010 at 10:52 PM. Reason: grammar
Cruiser
Joined: Aug 2010
Posts: 213
Likes: 0
From: N.E.WA. State
I removed mine as well. Bike is completely stock other than the cat removed. Runs great and even sounds really nice. No way for the O2's to crosstalk as they are in their own seperate section of headpipe.
Supporter
Joined: Dec 2006
Posts: 6,724
Likes: 234
From: Altoona, Pa.
If you going to remove the cat, you might as well get rid of the lean conditions that EPA has given you. Might as wel get a fuel management system as I did. I got the PCV from Fuelmoto. Been too cool to give it a hot weather test but this has worked well with others.
Road Warrior
Joined: Jun 2008
Posts: 1,344
Likes: 173
From: Watertown, CT
Installed the power duals on my '10 King from V&H plus the big sucker that AN makes with a pcv. Stock mufflers and runs and sounds good ( to me). A little flat around 4k due to too much fuel but I'm going to lighten that up a little. Well worth the trouble and expense.
Outstanding HDF Member
Joined: Jul 2007
Posts: 2,241
Likes: 7
From: Daytona, Fla.
I picked up a couple of 2010 2 into 1 exhaust systems (they're cheap since nobody wants 'em) for my '07 RG. Ran the first one, with the cat. for most of the year. I recently took the second one to a welder & yanked the cat out in a similar manner as txrarebear.
I'm runnin' a PCIII-USB without 02 sensors. So far I haven't even bothered to make any changes to my map. The only difference I've seen is a very slightly louder sound, less heat, & the bike feels a little more responsive. All in all, not any big changes but no problems.
I'm runnin' a PCIII-USB without 02 sensors. So far I haven't even bothered to make any changes to my map. The only difference I've seen is a very slightly louder sound, less heat, & the bike feels a little more responsive. All in all, not any big changes but no problems.
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Banned
Joined: Oct 2010
Posts: 32
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From: Willcox, Arizona
New Mufflers were too quiet because of CAT
I just bought a 2011 HD Road King, installed new Bub 7 mufflers and was shocked at how quiet they were. I didn't realize that my new bike has a CAT, which apparently significantly reduces sound of the bike. I ordered Drag Specialties headers and once they are installed, the HD tech tells me that my pipes should gain significant volume in sound. We shall see. In retrospect, I would have gone with true duals instead of piecing it together.
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Tourer
Joined: May 2008
Posts: 285
Likes: 1
From: rural nc illinois
thanks for all the great responses. My reasoning to do this is because i am going to do 103 kit with cams so i will be picking up some kind of fuel management system. I figured while i had it all apart i would at least give this method of going catless a try. thanks again.