Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

Removing the catalytic converter?

Thread Tools
 
Search this Thread
 
Old 11-21-2009, 07:29 PM
  #1  
Member
Posts like a V-Tak
Thread Starter
 
nbuss's Avatar
 
Join Date: Sep 2009
Posts: 59
Likes: 0
Received 0 Likes on 0 Posts
nbuss is on a distinguished road
Default Removing the catalytic converter?

So the other day i helped my buddy put a side pipe on his ranger and removed the cat. I was thinking about doing it to my car just for fun. I heard it improves fuel milage and performance. I know its illegal. I was just wondering if anybody did it to their bonne.
Old 11-21-2009, 07:34 PM
  #2  
Senior Member
True Car Nut
 
Purplehazeir's Avatar
 
Join Date: Sep 2008
Location: Arlington, WA
Posts: 7,979
Likes: 0
Received 1 Like on 1 Post
Purplehazeir is on a distinguished road
Default

There has been a few that has done the cat delete and a few of us that switched to a high flow cat. In doing so, you wont necessarily see much of a MPG improvement, unless your current cat is plugged up.

You will notice a slight improvement in throttle response but not any true horsepower gains without further mods.
Old 11-21-2009, 09:02 PM
  #3  
Senior Member
Posts like a Corvette
 
Nighthwk12's Avatar
 
Join Date: Feb 2009
Location: Jersey Shore
Posts: 1,511
Likes: 0
Received 0 Likes on 0 Posts
Nighthwk12 is on a distinguished road
Default

Yeah the only thing you would be doing is setting off you SES light and making your car illgeal. Be better to look it replacing the front exhaust manifold with something more free flowing. Could look into the cross over too. No need to bug out your PCM just yet until you get some power moving.
Old 11-21-2009, 09:05 PM
  #4  
Member
Posts like a V-Tak
Thread Starter
 
nbuss's Avatar
 
Join Date: Sep 2009
Posts: 59
Likes: 0
Received 0 Likes on 0 Posts
nbuss is on a distinguished road
Default

do u think it would make it sound any-better without it?
Old 11-21-2009, 09:25 PM
  #5  
Senior Member
True Car Nut
 
sawgunner's Avatar
 
Join Date: Jan 2009
Location: Dover, NH
Posts: 7,122
Likes: 0
Received 0 Likes on 0 Posts
sawgunner is on a distinguished road
Default

sometimes you lose horsepower by removing it and also if your state does inspection you will need one or you'll fail
Old 11-21-2009, 09:51 PM
  #6  
Senior Member
True Car Nut
 
sawgunner's Avatar
 
Join Date: Jan 2009
Location: Dover, NH
Posts: 7,122
Likes: 0
Received 0 Likes on 0 Posts
sawgunner is on a distinguished road
Default

if you remove it you will get an engine light as well as your exhaust may also sound really raspy like a rice burner
Old 11-21-2009, 09:54 PM
  #7  
Senior Member
Posts like a Corvette
 
Nighthwk12's Avatar
 
Join Date: Feb 2009
Location: Jersey Shore
Posts: 1,511
Likes: 0
Received 0 Likes on 0 Posts
Nighthwk12 is on a distinguished road
Default

Removing the cat the pcm might bug out, lose horsepower and may go lean. You will loose more low end torque then anything else. Better sound is subjective and what you are into. Removing the cat will most likely make it more raspy. and increase the volume a bit.
Old 11-22-2009, 02:04 AM
  #8  
Retired Senior Admin

Expert Gearhead
 
Danthurs's Avatar
 
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Likes: 0
Received 28 Likes on 24 Posts
Danthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to all
Default

Your best bet is to get a after market free flow cat. That way you stay legal and improve performance.
Old 11-22-2009, 10:28 AM
  #9  
Member
Posts like a V-Tak
Thread Starter
 
nbuss's Avatar
 
Join Date: Sep 2009
Posts: 59
Likes: 0
Received 0 Likes on 0 Posts
nbuss is on a distinguished road
Default

I dont think i want to put anymore money into it at the moment. I looked up some free flow cats and they can be a little pricey. My mufflers rusted out so i guess ill worry about that first before i sell it.
Old 11-22-2009, 10:37 AM
  #10  
Senior Member
True Car Nut
 
sawgunner's Avatar
 
Join Date: Jan 2009
Location: Dover, NH
Posts: 7,122
Likes: 0
Received 0 Likes on 0 Posts
sawgunner is on a distinguished road
Default

2.5" Goerlich Catalytic Converter OBDII 608226 - 608226
did you see this one? and a muffler shouldn't be too much you should be able to get one out of the junk yard


Quick Reply: Removing the catalytic converter?



All times are GMT -4. The time now is 04:27 AM.