Catalytic converter removal
Seasoned HDF Member
Joined: Jun 2014
Posts: 5,465
Likes: 6,327
From: pacific northwest
I'm in the same place. Just want the CAT gone for heat reduction. It seems consensus of people who have done it is it makes no difference in performance if you don't change anything else. Also the drill it with auger and then run a cylinder hone in the pipe (still on the bike) looks like the easiest method.
If you do the drill out method and there are no external marks on the pipe, would a Harley tech care/notice anything was different during the warranty period. I kinda doubt they are going to take the pipe off to look. It would be louder and have much less heat at the CAT.
If you do the drill out method and there are no external marks on the pipe, would a Harley tech care/notice anything was different during the warranty period. I kinda doubt they are going to take the pipe off to look. It would be louder and have much less heat at the CAT.
Road Warrior
Joined: Feb 2007
Posts: 1,338
Likes: 92
From:
From the youtube videos I've seen, a 17" auger bit will chew through it easy. Its a straight shot so no flexible extension required.
Road Warrior
Joined: Dec 2012
Posts: 1,539
Likes: 692
From: magnolia tx
If you have o2 sensors before and after the cat, the bike will stay in open loop and run off the ecm which is rich,and not go into close loop and run off the 02s but you will have a check engine light
Seasoned HDF Member
Joined: Jun 2014
Posts: 5,465
Likes: 6,327
From: pacific northwest
Just use a spade bit with an extension, it will cut thru it quickly.
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Intermediate
Joined: May 2022
Posts: 42
Likes: 26
From: North carolina
what harley has o2s before and after cat?
Seasoned HDF Member
Joined: Feb 2008
Posts: 22,999
Likes: 11,439
I'm in the same place. Just want the CAT gone for heat reduction. It seems consensus of people who have done it is it makes no difference in performance if you don't change anything else. Also the drill it with auger and then run a cylinder hone in the pipe (still on the bike) looks like the easiest method.
If you do the drill out method and there are no external marks on the pipe, would a Harley tech care/notice anything was different during the warranty period. I kinda doubt they are going to take the pipe off to look. It would be louder and have much less heat at the CAT.
If you do the drill out method and there are no external marks on the pipe, would a Harley tech care/notice anything was different during the warranty period. I kinda doubt they are going to take the pipe off to look. It would be louder and have much less heat at the CAT.
Bike will not show cat removed 02 sensors are in front of Cat. But in diagnostics CAT area should be real hot if not it may cause a closer look.
