Removing Cats - Mustang Evolution

Go Back   Mustang Evolution > 4 Cylinder | V6 | Classic Mustangs || Tech and Talk > Pre-2005 V6 Mustang



Reply
 
Thread Tools Search this Thread
Please support our sponsors and let them know you heard about them here!
Old 08-29-2013, 01:33 PM   #1
Registered Member
Regular
 
2000v6stang's Avatar
 
Join Date: Apr 2012
Location: Cedar Rapids
Region: Iowa
Posts: 233
Removing Cats

I think I have 4 cats on my 2000 3.8L and I want to remove 2 of them and just put a pipe where they used to be. How can I do this without throwing a check engine light do I need new O2 sensors or simulators? any ideas?
__________________

Blacking it out, MAC duel exhaust, SR CAI, Performance Automatic shift kit. And a long build list wrecked in July '14
2000v6stang is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 08-29-2013, 02:36 PM   #2
Registered Member
Regular
 
samuelsmith's Avatar
 
Join Date: Feb 2013
Location: Gulfport
Region: Mississippi
Posts: 1,234
Mustang Plug-in MIL Eliminators at AmericanMuscle.com
__________________

new engine,1.7 rocker arms,Pipes exhaust, shorty cats , shorty headers,under drive and overdrive pulleys,4.2 upper plenum, throttle body spacer, cold air intake, stage one clutch, shorty shifter, and tune. 8.8 in storage
samuelsmith is offline   Reply With Quote
Old 08-29-2013, 02:50 PM   #3
Registered Member
Regular
 
JimmyMosqueda's Avatar
 
Join Date: Jun 2013
Location: Houston
Region: Texas
Posts: 270
You can use the above, or you can use a tuner to get rid of the code and deactivate the o2 sensors.
JimmyMosqueda is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 08-29-2013, 02:57 PM   #4
Registered Member
Regular
 
Horseplay's Avatar
 
Join Date: Oct 2011
Location: San Antonio, TX
Region: Texas
Posts: 4,265
^ both correct
__________________

Low2v
Horseplay is offline   Reply With Quote
Old 08-29-2013, 03:49 PM   #5
Registered Member
Regular
 
bkh1994's Avatar
 
Join Date: May 2013
Location: York
Region: South Carolina
Posts: 650
Quote:
Originally Posted by 2000v6stang View Post
I think I have 4 cats on my 2000 3.8L and I want to remove 2 of them and just put a pipe where they used to be. How can I do this without throwing a check engine light do I need new O2 sensors or simulators? any ideas?
Or use spark plug nonfoulers (like $5) so its the cheapest
bkh1994 is offline   Reply With Quote
Old 08-29-2013, 11:45 PM   #6
Registered Member
Regular
 
lemons95's Avatar
 
Join Date: Jan 2012
Region: California
Posts: 835
Quote:
Originally Posted by bkh1994 View Post
Or use spark plug nonfoulers (like $5) so its the cheapest
Will that still work if you remove all the cats?
lemons95 is offline   Reply With Quote
Old 08-30-2013, 03:22 AM   #7
Registered Member
Regular
 
JB_MUSTANG_V6's Avatar
 
Join Date: Aug 2012
Region: Pennsylvania
Posts: 110
What's the point in removing the cats? I think it sounds terrible IMO
JB_MUSTANG_V6 is offline   Reply With Quote
Old 08-30-2013, 07:45 AM   #8
Registered Member
Regular
 
bkh1994's Avatar
 
Join Date: May 2013
Location: York
Region: South Carolina
Posts: 650
Quote:
Originally Posted by lemons95 View Post

Will that still work if you remove all the cats?
Just the back two I'm pretty sure
bkh1994 is offline   Reply With Quote
Old 08-30-2013, 03:51 PM   #9
Registered Member
Regular
 
Project Pony's Avatar
 
Join Date: Jan 2011
Location: Aiken
Region: South Carolina
Posts: 3,274
Quote:
Originally Posted by JB_MUSTANG_V6 View Post
What's the point in removing the cats? I think it sounds terrible IMO
Listen to mine in the exhaust sticky. No cats, mac prochamber, 2 1/2" tubing with flowmaster 10's. I love the sound but even better, everyone who hears it agrees. It sounds good.

Also the stock cats are fairly restrictive.
__________________
[SIGPIC][/SIGPIC]
Project Pony is offline   Reply With Quote
Old 08-31-2013, 12:00 AM   #10
Registered Member
Regular
 
2000v6stang's Avatar
 
Join Date: Apr 2012
Location: Cedar Rapids
Region: Iowa
Posts: 233
ok thank you ill research my options i want to take them off because i want my car to be a little louder i mean it sounds nice it has a good tone but i want it louder also like one of you said they are restrictive.
__________________

Blacking it out, MAC duel exhaust, SR CAI, Performance Automatic shift kit. And a long build list wrecked in July '14
2000v6stang is offline   Reply With Quote
Old 09-01-2013, 12:26 AM   #11
Registered Member
Regular
 
2000v6stang's Avatar
 
Join Date: Apr 2012
Location: Cedar Rapids
Region: Iowa
Posts: 233
one where can I find the spark plug things and two how will it sound just removing two will it sound raspy or will it still be throaty I just want more volume
__________________

Blacking it out, MAC duel exhaust, SR CAI, Performance Automatic shift kit. And a long build list wrecked in July '14
2000v6stang is offline   Reply With Quote
Old 09-01-2013, 09:02 PM   #12
Registered Member
Regular
 
Project Pony's Avatar
 
Join Date: Jan 2011
Location: Aiken
Region: South Carolina
Posts: 3,274
Quote:
Originally Posted by 2000v6stang View Post
one where can I find the spark plug things and two how will it sound just removing two will it sound raspy or will it still be throaty I just want more volume
If you want volume, remove all four.
__________________
[SIGPIC][/SIGPIC]
Project Pony is offline   Reply With Quote
Old 09-01-2013, 10:32 PM   #13
Registered Member
Regular
 
bkh1994's Avatar
 
Join Date: May 2013
Location: York
Region: South Carolina
Posts: 650
Quote:
Originally Posted by 2000v6stang View Post
one where can I find the spark plug things and two how will it sound just removing two will it sound raspy or will it still be throaty I just want more volume
Sparkplug nonfoulers can be found at any auto parts store. If you can't find them yourself, ask an employee. They'll know what you want. I'll post up a guide on how to use them tomorrow
bkh1994 is offline   Reply With Quote
Old 09-02-2013, 10:32 AM   #14
Registered Member
Regular
 
2000v6stang's Avatar
 
Join Date: Apr 2012
Location: Cedar Rapids
Region: Iowa
Posts: 233
Quote:
Originally Posted by Project Pony View Post
If you want volume, remove all four.
I do want volume but I don't want to loose the nice tone It has
__________________

Blacking it out, MAC duel exhaust, SR CAI, Performance Automatic shift kit. And a long build list wrecked in July '14
2000v6stang is offline   Reply With Quote
Old 09-02-2013, 11:17 AM   #15
Registered Member
Regular
 
bkh1994's Avatar
 
Join Date: May 2013
Location: York
Region: South Carolina
Posts: 650
Quote:
Originally Posted by 2000v6stang View Post
I do want volume but I don't want to loose the nice tone It has
IMO I don't like the cats off. It makes it sound like a truck to me. If you want loud, glasspacks, if you want around the same tone you have now, yes remove the cats
bkh1994 is offline   Reply With Quote
Old 09-02-2013, 11:52 AM   #16
Registered Member
Regular
 
samuelsmith's Avatar
 
Join Date: Feb 2013
Location: Gulfport
Region: Mississippi
Posts: 1,234
I though MIL eliminators have a diode in them not spark plug nonfoulers.
__________________

new engine,1.7 rocker arms,Pipes exhaust, shorty cats , shorty headers,under drive and overdrive pulleys,4.2 upper plenum, throttle body spacer, cold air intake, stage one clutch, shorty shifter, and tune. 8.8 in storage
samuelsmith is offline   Reply With Quote
Old 09-02-2013, 12:47 PM   #17
Registered Member
Regular
 
Crowned1's Avatar
 
Join Date: Oct 2012
Region: Texas
Posts: 748
Quote:
Originally Posted by bkh1994 View Post

IMO I don't like the cats off. It makes it sound like a truck to me. If you want loud, glasspacks, if you want around the same tone you have now, yes remove the cats
glass packs are for ricerzzzz
Crowned1 is offline   Reply With Quote
Old 09-02-2013, 12:51 PM   #18
Registered Member
Regular
 
bkh1994's Avatar
 
Join Date: May 2013
Location: York
Region: South Carolina
Posts: 650
Quote:
Originally Posted by samuelsmith View Post
I though MIL eliminators have a diode in them not spark plug nonfoulers.
Im not sure what you're asking but sparkplug nonfoulers just like lengthen the o2 sensors so it can't sense it to the fullest extent

Quote:
Originally Posted by Crowned1 View Post

glass packs are for ricerzzzz
I don't like glasspacks either but if he's wanting louder than he has WITH cats then glasspacks is pretty much the loudest I can think of. Unless he wants to straight pipe it
bkh1994 is offline   Reply With Quote
Old 09-02-2013, 01:08 PM   #19
Registered Member
Regular
 
bkh1994's Avatar
 
Join Date: May 2013
Location: York
Region: South Carolina
Posts: 650
Here is two guides on how to use sparkplug non-foulers
How to install the spark plug anti-foulers to remove the ses or cel light - evolutionm.net

$5 o2 cheater/non fouler how-to - evolutionm.net
bkh1994 is offline   Reply With Quote
Old 09-02-2013, 02:14 PM   #20
Registered Member
Regular
 
lemons95's Avatar
 
Join Date: Jan 2012
Region: California
Posts: 835
Quote:
Originally Posted by Crowned1 View Post
glass packs are for ricerzzzz
glass packs are for old school muscle cars, they shouldn't be anywhere near ricers.
lemons95 is offline   Reply With Quote
Old 09-02-2013, 03:14 PM   #21
Registered Member
Regular
 
bkh1994's Avatar
 
Join Date: May 2013
Location: York
Region: South Carolina
Posts: 650
Quote:
Originally Posted by lemons95 View Post

glass packs are for old school muscle cars, they shouldn't be anywhere near ricers.
+1
bkh1994 is offline   Reply With Quote
Old 09-02-2013, 09:36 PM   #22
Registered Member
Regular
 
2000v6stang's Avatar
 
Join Date: Apr 2012
Location: Cedar Rapids
Region: Iowa
Posts: 233
I agree I don't like glass packs on mustangs I don't like rasp ether my car has a nice sound clear deep tone and I love it but its still kind of quiet I just want it louder but I don't want to change how it sounds. From what im hearing glasspack will change it so I don't want that but if I just do a straight pipe it wont change the sound just make it louder. and if I do non foulers or MIL eliminators would keep my engine light off. Am I right
__________________

Blacking it out, MAC duel exhaust, SR CAI, Performance Automatic shift kit. And a long build list wrecked in July '14
2000v6stang is offline   Reply With Quote
Old 09-02-2013, 10:58 PM   #23
Registered Member
Regular
 
bkh1994's Avatar
 
Join Date: May 2013
Location: York
Region: South Carolina
Posts: 650
Quote:
Originally Posted by 2000v6stang View Post
I agree I don't like glass packs on mustangs I don't like rasp ether my car has a nice sound clear deep tone and I love it but its still kind of quiet I just want it louder but I don't want to change how it sounds. From what im hearing glasspack will change it so I don't want that but if I just do a straight pipe it wont change the sound just make it louder. and if I do non foulers or MIL eliminators would keep my engine light off. Am I right
Non foulers or MIL eliminators will keep the CEL off if you just remove the two back catalytic converters, yes. And by straight pipe, what do you mean? Also, what is your current exhaust setup?
bkh1994 is offline   Reply With Quote
Old 09-03-2013, 08:02 AM   #24
Registered Member
Regular
 
2000v6stang's Avatar
 
Join Date: Apr 2012
Location: Cedar Rapids
Region: Iowa
Posts: 233
I have the MAC conversion kit so it sounds good but still not as loud as I want. By straight pipe I mean when I cut the cats off just welding a pipe in its place and putting a my O2 sensor or MIL eliminators there verses lets say a glasspack
__________________

Blacking it out, MAC duel exhaust, SR CAI, Performance Automatic shift kit. And a long build list wrecked in July '14
2000v6stang is offline   Reply With Quote
Old 09-03-2013, 08:25 AM   #25
Registered Member
Regular
 
bkh1994's Avatar
 
Join Date: May 2013
Location: York
Region: South Carolina
Posts: 650
Quote:
Originally Posted by 2000v6stang View Post
I have the MAC conversion kit so it sounds good but still not as loud as I want. By straight pipe I mean when I cut the cats off just welding a pipe in its place and putting a my O2 sensor or MIL eliminators there verses lets say a glasspack
Conversion kits aren't loud. And straight pipes means to run no mufflers, not to cut out the cats. Yes, you put a pipe in place of the cat but that's just called cutting them. And a glasspack is not used as a replacement for a cat, it is a muffler. Does that make sense?

---------- Post added at 09:25 AM ---------- Previous post was at 09:24 AM ----------

You'll want to get rid of the conversion kit or cut the cats to make it louder. Id say for loud and cheap, cut the cats and throw glasspacks on it. Not my favorite sound but its definitely loud
bkh1994 is offline   Reply With Quote
Old 09-03-2013, 08:33 AM   #26
Registered Member
Regular
 
2000v6stang's Avatar
 
Join Date: Apr 2012
Location: Cedar Rapids
Region: Iowa
Posts: 233
yeah that makes sense I know glasspack isn't the same as a cat but ive had friends put glasspacks in place of cats instead of just doing a pipe. I just didn't know what would sound better I don't want a raspy sound

---------- Post added at 08:33 AM ---------- Previous post was at 08:31 AM ----------

could I just do a mid pipe to make it louder and not get a bad sound
__________________

Blacking it out, MAC duel exhaust, SR CAI, Performance Automatic shift kit. And a long build list wrecked in July '14
2000v6stang is offline   Reply With Quote
Old 09-03-2013, 08:35 AM   #27
Registered Member
Regular
 
bkh1994's Avatar
 
Join Date: May 2013
Location: York
Region: South Carolina
Posts: 650
Quote:
Originally Posted by 2000v6stang View Post
yeah that makes sense I know glasspack isn't the same as a cat but ive had friends put glasspacks in place of cats instead of just doing a pipe. I just didn't know what would sound better I don't want a raspy sound

---------- Post added at 08:33 AM ---------- Previous post was at 08:31 AM ----------

could I just do a mid pipe to make it louder and not get a bad sound
I've heard of people doing that too. I was just making sure you were aware. I have no clue how it sounds. A midpipe won't fit with your conversion kit. You'll have to cut it. The only way to make yours louder WITH the kit is to cut cats or swap mufflers. Swapping mufflers would change your sound though
bkh1994 is offline   Reply With Quote
Old 09-03-2013, 09:14 AM   #28
Registered Member
Regular
 
2000v6stang's Avatar
 
Join Date: Apr 2012
Location: Cedar Rapids
Region: Iowa
Posts: 233
ok thank you for your help and talking me through it I appreciate it!
__________________

Blacking it out, MAC duel exhaust, SR CAI, Performance Automatic shift kit. And a long build list wrecked in July '14
2000v6stang is offline   Reply With Quote
Old 09-03-2013, 11:00 AM   #29
Registered Member
Regular
 
bkh1994's Avatar
 
Join Date: May 2013
Location: York
Region: South Carolina
Posts: 650
Quote:
Originally Posted by 2000v6stang View Post
ok thank you for your help and talking me through it I appreciate it!
No problem! If you have any more questions or need an opinion I can help
bkh1994 is offline   Reply With Quote
Old 09-03-2013, 01:38 PM   #30
Registered Member
Regular
 
lemons95's Avatar
 
Join Date: Jan 2012
Region: California
Posts: 835
You might be able to run straight pipes from the headers back. I've seen V8 trucks do this in my area. I heard of one guy getting a few tickets but he had open headers.
lemons95 is offline   Reply With Quote
Old 09-03-2013, 01:41 PM   #31
Registered Member
Regular
 
bkh1994's Avatar
 
Join Date: May 2013
Location: York
Region: South Carolina
Posts: 650
Quote:
Originally Posted by lemons95 View Post
You might be able to run straight pipes from the headers back. I've seen V8 trucks do this in my area. I heard of one guy getting a few tickets but he had open headers.
IMO straight pipe doesn't sound good on a v6. It's just loud. Not really any tone or anything
bkh1994 is offline   Reply With Quote
Old 09-03-2013, 06:17 PM   #32
Registered Member
Regular
 
Crowned1's Avatar
 
Join Date: Oct 2012
Region: Texas
Posts: 748
Quote:
Originally Posted by bkh1994 View Post

IMO straight pipe doesn't sound good on a v6. It's just loud. Not really any tone or anything
did anybody ask for your opinion?
Crowned1 is offline   Reply With Quote
Old 09-03-2013, 06:23 PM   #33
Registered Member
Regular
 
bkh1994's Avatar
 
Join Date: May 2013
Location: York
Region: South Carolina
Posts: 650
Quote:
Originally Posted by Crowned1 View Post

did anybody ask for your opinion?
I guess not haha :p
bkh1994 is offline   Reply With Quote
Old 09-04-2013, 01:04 AM   #34
Registered Member
Regular
 
lemons95's Avatar
 
Join Date: Jan 2012
Region: California
Posts: 835
I think if you had a good cam, full straight pipes would probably sound okay. With the stock cam, probably not.
straight pipes with cats, sounds okay though. I'm getting bored of hearing the same thing everyday though.
lemons95 is offline   Reply With Quote
Old 09-04-2013, 01:45 AM   #35
Registered Member
Regular
 
davidcseifert's Avatar
 
Join Date: Dec 2011
Region: Arkansas
Posts: 1,694
Straight pipes never sound ok..
__________________

BV heads, P&P lower, comp 218/226 cam, 4.2 bottom end, 3k stall, flow 40's, O/R x-pipe, Pacesetter lt's, SCT xcal2 (93 Ortizperformance tune), Windstar upper, 65mm tb, CAI, 8.8 w/ 3.73's, SFC's, cut springs, KYB shocks/struts, MM LCA's
blower/new cam soon
Dealer for Ortiz Performance, great tunes at a good price!
davidcseifert is offline   Reply With Quote
Reply

Lower Navigation
Go Back   Mustang Evolution > 4 Cylinder | V6 | Classic Mustangs || Tech and Talk > Pre-2005 V6 Mustang

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off


» Like Us On Facebook



11:13 AM


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0

MustangEvolution.com is in no way associated with or endorsed by Ford Motor Company.