The decatting debate continues.....
Elite HDF Member
Joined: Jul 2012
Posts: 4,316
Likes: 67
From: East Texas, waterfront
and again, no proof that the cat is restrictive in any way. Just because somebody has a couple hundred thousand miles on their car and the engine is burning oil and the cat got clogged doesn't mean anything with regard to this conversation.
Somebody have a dyno chart with the ONLY change being getting rid of the cat....anybody......
Somebody have a dyno chart with the ONLY change being getting rid of the cat....anybody......
However, I dont think it is a good idea for us all to remove them, so no I do not have a dyno sheet, and it would make very little difference if I did for reasons previously stated, and YOU should for sure keep your catalyst in your exhaust.
Have a great Labor Day weekend everyone.!!!
Cruiser
Joined: Feb 2008
Posts: 132
Likes: 0
From: nashville
Any internal combustion engine, properly tuned or not creates carbon during combustion. It's that black stuff in the end of your exhaust pipe. That black stuff went through your cat. Some of it stayed in your cat. More of it stays in your cat every mile you drive becoming less and less efficient every mile. Harley didnt want to put them there, they had to comply with EPA BS. They are not there to make your motor more efficient.
However, I dont think it is a good idea for us all to remove them, so no I do not have a dyno sheet, and it would make very little difference if I did for reasons previously stated, and YOU should for sure keep your catalyst in your exhaust.
Have a great Labor Day weekend everyone.!!!
However, I dont think it is a good idea for us all to remove them, so no I do not have a dyno sheet, and it would make very little difference if I did for reasons previously stated, and YOU should for sure keep your catalyst in your exhaust.
Have a great Labor Day weekend everyone.!!!
Road Master
Joined: Feb 2010
Posts: 880
Likes: 0
From: Houston, Texas
I removed mine and I'm very happy I did. My Rinehart 4" slipon on the right side was becoming discolored quickly due to the heat. Since the removal of the cat I have noticed no more discoloration than was on there before removal. Mine was strictly a heat issue, but the sound improvement is nice. I don't doubt the validity of having a cat in for various reasons, but I know way too many people who have removed them and put some major miles on their bikes with no issues what so ever. I agree a dyno sheet is the only proof in the pudding, so to speak, as far as any hp gains or any signifigant change. For now I'm all for catless!!!
Stellar HDF Member
Joined: Aug 2012
Posts: 2,664
Likes: 184
From: Indiana, USA
Well OK then, I pulled my 2012 closed loop 15mm sensors, cat and headpipe ASM, added the Power Commander 5 and replaced pipes with V&H Power Duals for 2009 which included 18mm bings for the 09. I chose this as I have a bad habit of not ever being satisfied and wanting more power. When and if I ever replace the heads and cams on my 12 I will purchase the Power Commander Autotune which uses 18mm wide band O2 sensors. Remove the bung plugs and replace with Bosch 18mm O2's and I will have the ability for closed loop real time tuning after any performace upgrades
Road Captain
Joined: Sep 2007
Posts: 500
Likes: 2
From: Springfield Ohio
Good information and good followup questions. Looking at my options before I dive in.
Couple of things I have found:
https://www.hdforums.com/forum/touri...removal-3.html
pic of a window-cut collector... 2nd post down. From the picture, it looks as though the cat is a single block situated in the middle of the chamber. Judging by the size and position of the block it appears that it would be possible to remove all but the smallest remnants of material from the chamber using a spade bit. I could see being very dependent on the individual job; cat glued right to the very edge, spade bit tearing out the edges cleanly or cutting through and leaving remnants, etc.
That said, I don't see where the remnants (if any) would be large enough to pose an issue. I would say its worth a try for those on a tight budget.
Edit: Dyno chart
Best I can find so far. From FuelMoto website
"2010-2012 Electra Glide Ultra Limited and 103" PowerPak models:
Here is a dyno chart that compares the stock Ultra Limited 103" to the addition of the Jackpot 2/1/2 headpipe, everything else is stock"
http://www.jackpotmufflers.com/limit...jackpot212.jpg
EDIT:
good info and pics here. Writer talks about about Dyno results, but no actual chart.
https://www.hdforums.com.au/Default....&postid=347082
Couple of things I have found:
https://www.hdforums.com/forum/touri...removal-3.html
pic of a window-cut collector... 2nd post down. From the picture, it looks as though the cat is a single block situated in the middle of the chamber. Judging by the size and position of the block it appears that it would be possible to remove all but the smallest remnants of material from the chamber using a spade bit. I could see being very dependent on the individual job; cat glued right to the very edge, spade bit tearing out the edges cleanly or cutting through and leaving remnants, etc.
That said, I don't see where the remnants (if any) would be large enough to pose an issue. I would say its worth a try for those on a tight budget.
Edit: Dyno chart
Best I can find so far. From FuelMoto website
"2010-2012 Electra Glide Ultra Limited and 103" PowerPak models:
Here is a dyno chart that compares the stock Ultra Limited 103" to the addition of the Jackpot 2/1/2 headpipe, everything else is stock"
http://www.jackpotmufflers.com/limit...jackpot212.jpg
EDIT:
good info and pics here. Writer talks about about Dyno results, but no actual chart.
https://www.hdforums.com.au/Default....&postid=347082
Last edited by basselope; Sep 2, 2012 at 07:24 PM. Reason: added content
Outstanding HDF Member
Joined: Sep 2010
Posts: 2,357
Likes: 8
From: Pa
Well i bought a 2012 street gide headpipe here on the forum from a member. I decided that i wanted to try and drill it out as upposed to cutting it. Well it worked like Mark5 said it would. It took exactly an hour from start to clean up. Just took my time. I wound up burning up my dril. It was a 20 yr old craftsman. I guess it was all the side pressure used. I will get the rest out no problem. Couldnt believe it was that easy. I was a doubter before, and not any more.
Last edited by pontiac69; Sep 6, 2012 at 03:29 PM.
Seasoned HDF Member
Joined: Jan 2007
Posts: 20,616
Likes: 4,440
From: anacoco, la
so anyone able to fill in the 2nd half? a dyno run, with ac and slip ons, with the cat headpipe still?
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Ultimate HDF Member
Joined: Dec 2010
Posts: 7,776
Likes: 2,252
From: wet coast BC
It died. The O2 sensors are before the cat in the collector and are able to talk before or after decat, if they actually do. some claim they talk however no discussion ended with proof that they only talk after decatting, just speculation.
Cut and Gut
I did the cut and gut on mine. I couldn't be happier with it. The heat issue from the cat was solved, and the more miles I roll on the stock pipes the better it sounds. Not overly loud, but you can hear it when I roll on the throttle, which is just what I wanted.