Feb 13, 2015, 02:06 PM
Last edit by: IB Advertising
Some forum members are removing their cats for various reasons. Among the most popular reasons listed are:
Read the full discussion below to find out actual differences and make sure to check your local laws.
Read the full discussion below to find out actual differences and make sure to check your local laws.
gut the cat?
Outstanding HDF Member
Joined: Nov 2012
Posts: 2,644
Likes: 397
From: Nonya, BS
The cat has got to go either from new pipes or removal. Only issue would be emissions problem, if your state regulates. Otherwise your engine will run cooler, your mileage will improve and the bike will sound better.
Grand HDF Member
Joined: Nov 2012
Posts: 3,751
Likes: 459
From: Here and now
Removing the Cat will not make your engine run cooler nor will it have any notable effect on your mileage. It will make the area of the header pipe where it was located dramatically cooler but the engine temp will be the same.
Outstanding HDF Member
Joined: Feb 2012
Posts: 2,053
Likes: 39
From: San Diego
Most are happy with just getting rid of the burning hot cat.
Road Warrior
Joined: Nov 2014
Posts: 1,962
Likes: 140
From: NY
One thing to keep in mind is not only does the cat increase ex and engine temp in some cases its just as much the extreem lean fuel mapping the bikes got that also adds to issues with increased exhaust & engine heat.
But an easy fix for those issues post removing cat and or adding pipes and maybe better breathing air cleaner would be Nightriider's
Xied's or Vied's or RC Componanats XCellerator fuel management system neither of which require any additional mapping or expensive dyno tuning time,ect,bolt on,plug in, & go!
Either of those systems will fix the extreem lean cond ,but the go about doing that using 2 totally different approaches ,check them out to see the difference in design.
The cheaper of 2 systems should cover stage 1 type mods (cat removed-slipons-perf aircleaner) but it's really meant for hot setups with more compression,perf cams and better breathing heads etc.
The 2nd much more expensive system should handle that + mods like aftermarket cams & heads etc as long as you have injectors that have enough capacity to properly supply the additional power adders but to be safe ask the mfg about that if you plan to go that route now or in the future.
BTW,if you want to keep your original head pipes with cat in tact you can buy stock original headpips that have had the cat removed on ebay for $100-150 on avg,cost me $100 for stock head pipes with cat removed on ebay for my 09 FLHTCU .
I pasted the links below so you can check out the fuel enrichment devices.
Scott
http://www.nightrider.com/parts/
http://www.rccomponents.com/blog/rcx...gement-system/
But an easy fix for those issues post removing cat and or adding pipes and maybe better breathing air cleaner would be Nightriider's
Xied's or Vied's or RC Componanats XCellerator fuel management system neither of which require any additional mapping or expensive dyno tuning time,ect,bolt on,plug in, & go!
Either of those systems will fix the extreem lean cond ,but the go about doing that using 2 totally different approaches ,check them out to see the difference in design.
The cheaper of 2 systems should cover stage 1 type mods (cat removed-slipons-perf aircleaner) but it's really meant for hot setups with more compression,perf cams and better breathing heads etc.
The 2nd much more expensive system should handle that + mods like aftermarket cams & heads etc as long as you have injectors that have enough capacity to properly supply the additional power adders but to be safe ask the mfg about that if you plan to go that route now or in the future.
BTW,if you want to keep your original head pipes with cat in tact you can buy stock original headpips that have had the cat removed on ebay for $100-150 on avg,cost me $100 for stock head pipes with cat removed on ebay for my 09 FLHTCU .
I pasted the links below so you can check out the fuel enrichment devices.
Scott
http://www.nightrider.com/parts/
http://www.rccomponents.com/blog/rcx...gement-system/
Last edited by wscott; Jan 8, 2015 at 08:25 PM.
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From: St.Louis Mo.
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Road Master
Joined: Jun 2012
Posts: 910
Likes: 7
From: Shaconage
As already stated, the only downside would be a change or stricter enforcement of emissions regs. For this reason, I opted to buy an already decatted pipe and kept my original intact. My decatted header made a huge difference in reducing right side heat and seemed to make my exhaust just a little louder.
Extreme HDF Member
Joined: Jun 2011
Posts: 14,731
Likes: 2,536
From: Mountain Top, Alabama
It is a great thing to do.
I recommend getting rid of the cat (I went with Power Duals) as a part of a performance upgrade package to maximize what you have at that time to work with.
I recommend getting rid of the cat (I went with Power Duals) as a part of a performance upgrade package to maximize what you have at that time to work with.