General Harley Davidson Chat Forum to discuss general Harley Davidson issues, topics, and experiences.
Sponsored by:
Sponsored by:

Re cat of my De cat

Thread Tools
 
Search this Thread
 
Old Jun 2, 2013 | 10:05 AM
  #1  
Mo.Rob's Avatar
Mo.Rob
Thread Starter
|
Tourer
Joined: Sep 2006
Posts: 341
Likes: 1
From: Chamois Missouri
Default Re cat of my De cat

I de catted my 2013 RKC a couple weeks ago and thought I was going to like it. I had did it on a previous bike and it was fine. But this time it made my bike sound like crap and also I think it felt like it just ran different when you lugged it down a little in the hills. I found a take off stock headpipe on ebay and put it on, now its back to normal. I think Ill just keep it like this.
 
Old Jun 2, 2013 | 11:04 AM
  #2  
cb7263's Avatar
cb7263
Road Captain
Joined: May 2012
Posts: 656
Likes: 0
From: The computer desk.
Default

So far my 13 FLHTK is stock, I've been told by many to decat it and was thinking about doing it simply for the heat factor. Now prolly not...
 
Old Jun 2, 2013 | 11:41 AM
  #3  
Mo.Rob's Avatar
Mo.Rob
Thread Starter
|
Tourer
Joined: Sep 2006
Posts: 341
Likes: 1
From: Chamois Missouri
Default

I have a stock air cleaner and 4" H-D street cannons with fishtails on mine and it made it sound terrible when I de catted.
 
Old Jun 2, 2013 | 11:49 AM
  #4  
cb7263's Avatar
cb7263
Road Captain
Joined: May 2012
Posts: 656
Likes: 0
From: The computer desk.
Default

If I do change it guess I'll pony up the coin and do a complete stage 1.
But for the most part I'm satisfied with the sound and performance, it just lacks a little in the upper end, as in freeway speed passing.
 
Old Jun 2, 2013 | 03:24 PM
  #5  
dribble's Avatar
dribble
Grand HDF Member
Joined: Nov 2012
Posts: 3,751
Likes: 459
From: Here and now
Default

I de-catted and couldn't be happier with the result. I only did it for the heat that my wife was getting off the cat. The pipe temp dropped 180 degrees. Sound is slightly deeper, no louder, no performance difference. If the heat wasn't there, the cat still would be.
 
Old Jun 2, 2013 | 04:42 PM
  #6  
kwo51's Avatar
kwo51
Outstanding HDF Member
Joined: Feb 2012
Posts: 3,046
Likes: 68
From: florida
Default

If it is cats you want 08's had cats in slip ons . 12 and 13 and up put them in headers.
 
Old Jun 2, 2013 | 04:47 PM
  #7  
Steady Eddy's Avatar
Steady Eddy
Cruiser
Joined: Jul 2012
Posts: 234
Likes: 12
From: Ohio
Default

I changed my headpipe for a Fullsac Sportpipe. The sound increase thru my V&H Ovals was huge and obnoxious. I took the Ovals off and put stock cans on........sound real nice now and runs strong. And doesn't sound like I've got a Jake brake anymore.
ed
 
Old Jun 2, 2013 | 04:56 PM
  #8  
skratch's Avatar
skratch
Seasoned HDF Member
15 Year Member
Liked
Loved
Community Favorite
Joined: Jan 2007
Posts: 20,616
Likes: 4,440
From: anacoco, la
Default

Originally Posted by kwo51
If it is cats you want 08's had cats in slip ons . 12 and 13 and up put them in headers.
my 2010 had a cat in the headpipe as well.
 
HD Forum Stories

The Best of Harley-Davidson for Lifelong Riders

story-0

7 Surprising Harley-Davidson Products that Are Not Motorcycles

 Verdad Gallardo
story-1

8 Best Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-2

10 Worst Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-3

Killer Custom's Jail Break Is The Breakout That Refused to Blend In

 Verdad Gallardo
story-4

Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

 Verdad Gallardo
story-5

Harley-Davidson Reveals Super Cool Cafe Racer Concept

 Verdad Gallardo
story-6

Engraved Rebellion: Inside Bundnerbike's Glam Rock II

 Verdad Gallardo
story-7

10 Motorcycles You Should Never Buy

 Joe Kucinski
story-8

10 Things Harley-Davidson Needs to Fix in 2026

 Verdad Gallardo
story-9

Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider

 Verdad Gallardo
Old Jun 2, 2013 | 05:56 PM
  #9  
lh4x4's Avatar
lh4x4
Extreme HDF Member
Joined: Dec 2007
Posts: 13,402
Likes: 941
From: Illinois
Default

Decatting the collector tube on an HD will not change the sound or performance of any engine period. Total BS.

The only thing it does is eliminate the amount of heat generated by the cat from it back out the exhaust. By the way no HD has a cat in the head pipes. The cat is located in the collector tube behind the collector welded to the ends of the head pipes. The term HD uses in it's manual is "collector tube".

I done TC96's, TC103 and TC110. It did not improve the performance or sound nor did it diminish the performance in any way for those five bikes.

There is no improvement in power or sound. The HD cat is very high flow and removing it will not reduce any back pressure.

The 10 on touring bikes cats were in the collector tube as is the Dyna Switch back for all models. Previous years were in the California bikes only. The 10 on Dyna's and Softails are in the muffler. Don't know about earlier California models. Except for export and possibly California no 49 State Vrod's or Sportsters have cats in them. Yet!
 

Last edited by lh4x4; Jun 2, 2013 at 10:39 PM.
Old Jun 2, 2013 | 06:02 PM
  #10  
Clubber's Avatar
Clubber
Road Warrior
Joined: Feb 2012
Posts: 1,879
Likes: 10
From: Jacksonville
Default

I'm gonna try to keep mine stock as long as I can. I like the sound of a no cat, but it gets annoying after about 50 miles of it straight.
 



All times are GMT -5. The time now is 10:29 PM.

story-0
7 Surprising Harley-Davidson Products that Are Not Motorcycles

Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.

By Verdad Gallardo | 2026-04-29 16:50:35


VIEW MORE
story-1
8 Best Harley-Davidson Motorcycles Ever

Slideshow: Not every Harley gets it right, but these are the ones that genuinely earned their reputation.

By Pouria Savadkouei | 2026-04-15 14:23:21


VIEW MORE
story-2
10 Worst Harley-Davidson Motorcycles Ever

Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.

By Pouria Savadkouei | 2026-04-01 20:01:09


VIEW MORE
story-3
Killer Custom's Jail Break Is The Breakout That Refused to Blend In

Slideshow: Killer Custom's "Jail Breaker" build focuses more on stance and visual aggression than mechanical overhaul.

By Verdad Gallardo | 2026-03-18 19:20:32


VIEW MORE
story-4
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.

By Verdad Gallardo | 2026-03-07 16:15:30


VIEW MORE
story-5
Harley-Davidson Reveals Super Cool Cafe Racer Concept

Slideshow: Harley-Davidson's new RMCR concept revives the café racer formula with modern hardware-and it may be exactly the reset the company needs.

By Verdad Gallardo | 2026-03-04 12:23:37


VIEW MORE
story-6
Engraved Rebellion: Inside Bundnerbike's Glam Rock II

Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.

By Verdad Gallardo | 2026-02-24 18:19:44


VIEW MORE
story-7
10 Motorcycles You Should Never Buy

Slideshow: There is no shortage of great motorcycles to buy, but we would avoid these ten.

By Joe Kucinski | 2026-02-19 14:50:51


VIEW MORE
story-8
10 Things Harley-Davidson Needs to Fix in 2026

Slideshow: Harley-Davidson's challenges aren't abstract; they show up in dropping shipments, shrinking dealer traffic, and strategic decisions that aren't yet translating into growth.

By Verdad Gallardo | 2026-01-13 18:33:17


VIEW MORE
story-9
Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider

Slideshow: Graeme Billington's left-hand-drive Shovelhead is as much about problem-solving as it is about classic Harley form.

By Verdad Gallardo | 2025-12-30 11:27:08


VIEW MORE