E90Post
 


TireRack
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > cat delete



Reply
 
Thread Tools Search this Thread
      01-21-2013, 10:09 AM   #1
crasa21
New Member
0
Rep
25
Posts

 
Drives: 2007 328xi coupe
Join Date: Nov 2012
Location: chicago

iTrader: (0)

cat delete

Just as the title states, I want to delete all catalytic converters. Will this throw any codes? Performance gains vs. sound? Don't really care about performance unless mpg increases.

The reason: I dented my exhaust pipe before the first cats and I can straight pipe a lot easier than replacing and re-welding everything.
Appreciate 0
      01-21-2013, 11:24 AM   #2
Johnny D
Major
Johnny D's Avatar
19
Rep
1,124
Posts

 
Drives: 2006 BMW 325i
Join Date: Apr 2011
Location: Hot Springs, AR

iTrader: (4)

Garage List
2006 BMW 325i  [4.58]
Step 1 - click search
Step 2 - read
Step 3 - learn
Step 4 - Remember to search before posting next time you have a bright idea
__________________
Appreciate 0
      01-21-2013, 04:53 PM   #3
manutdas11
EL JIMMY NEURON
manutdas11's Avatar
United_States
13
Rep
1,209
Posts

 
Drives: Jet Black E90
Join Date: Aug 2012
Location: in the Napa Valley/SJ...

iTrader: (0)

Quote:
Originally Posted by Johnny D
Step 1 - click search
Step 2 - read
Step 3 - learn
Step 4 - Remember to search before posting next time you have a bright idea
:
__________________
2007 Jet Black E90 328i
Thread: http://www.e90post.com/forums/showthread.php?t=825249
Instagram: manutd_as
Appreciate 0
      01-21-2013, 09:27 PM   #4
crasa21
New Member
0
Rep
25
Posts

 
Drives: 2007 328xi coupe
Join Date: Nov 2012
Location: chicago

iTrader: (0)

well penis, I can't use the search feature when I am on my phone. it automatically goes to the google search. and I really don't think deleting the cats is a bright idea. I'm sure in AR it is a general hillbilly practice to do this, but I'm just cheap.
Appreciate 0
      01-21-2013, 11:18 PM   #5
Johnny D
Major
Johnny D's Avatar
19
Rep
1,124
Posts

 
Drives: 2006 BMW 325i
Join Date: Apr 2011
Location: Hot Springs, AR

iTrader: (4)

Garage List
2006 BMW 325i  [4.58]
Quote:
Originally Posted by crasa21 View Post
well penis, I can't use the search feature when I am on my phone. it automatically goes to the google search. and I really don't think deleting the cats is a bright idea. I'm sure in AR it is a general hillbilly practice to do this, but I'm just cheap.
You should learn your demographics before you attempt to swing personal insults. Hillbilly is a term primarily for the Appalachian area. I've heard it used as a term for people in the Ozarks. Being from the Ouachita area, we are known as Rednecks.

If you knew how to use the search feature, you would know you can click on advanced search and search from your phone.
__________________
Appreciate 0
      01-21-2013, 11:26 PM   #6
DUI Elite
///M at Heart
DUI Elite's Avatar
22
Rep
1,714
Posts

 
Drives: 2006 SGM E90
Join Date: Jan 2011
Location: Chicago, IL

iTrader: (4)

Quote:
Originally Posted by Johnny D View Post
You should learn your demographics before you attempt to swing personal insults. Hillbilly is a term primarily for the Appalachian area. I've heard it used as a term for people in the Ozarks. Being from the Ouachita area, we are known as Rednecks.

If you knew how to use the search feature, you would know you can click on advanced search and search from your phone.
or better yet search "Cat delete on N52" in Google with plenty of results on your phone.
Appreciate 0
      01-22-2013, 02:40 AM   #7
SACsac12
Dolomite
Germany
0
Rep
30
Posts

 
Drives: 2008 328i w spry pckg
Join Date: Aug 2012
Location: Ramstein Germany

iTrader: (0)

get em my fellow arkansas freind get em lol
Appreciate 0
      01-22-2013, 09:32 AM   #8
crasa21
New Member
0
Rep
25
Posts

 
Drives: 2007 328xi coupe
Join Date: Nov 2012
Location: chicago

iTrader: (0)

redneck is a coalminer term, and is far from derogatory stemming from it's original meaning. as far as my phone is concerned, anything I push it immediately goes to google search. as far as hillbilly, I used that as a stereotypical term referring to more your mentality rather than geographic location. next!
Appreciate 0
      01-22-2013, 12:48 PM   #9
Johnny D
Major
Johnny D's Avatar
19
Rep
1,124
Posts

 
Drives: 2006 BMW 325i
Join Date: Apr 2011
Location: Hot Springs, AR

iTrader: (4)

Garage List
2006 BMW 325i  [4.58]
Quote:
Originally Posted by crasa21 View Post
redneck is a coalminer term, and is far from derogatory stemming from it's original meaning. as far as my phone is concerned, anything I push it immediately goes to google search. as far as hillbilly, I used that as a stereotypical term referring to more your mentality rather than geographic location. next!
You're partially right. It is a coal miners term that came around in the early 20th century, but it is also a term for a poor southerner and has been around as long. So we are both correct.


You specifically said AR in your insults. Don't kid yourself... You attempted to use my geographic location to insult me.

What phone do you own?
__________________
Appreciate 0
      01-22-2013, 12:58 PM   #10
Volasko
Major
Volasko's Avatar
Canada
22
Rep
1,126
Posts

 
Drives: 2006 E90 330i BSM 6MT ZSP
Join Date: Dec 2010
Location: Toronto

iTrader: (2)

Garage List
Quote:
Originally Posted by crasa21 View Post
Just as the title states, I want to delete all catalytic converters. Will this throw any codes? Performance gains vs. sound? Don't really care about performance unless mpg increases.

The reason: I dented my exhaust pipe before the first cats and I can straight pipe a lot easier than replacing and re-welding everything.
The first (primary) cats are located in the exhaust headers so I can only assume you dented your exhaust before the 2ndary cats. People delete the 2nd cats all the time and it will not throw an error code because the last O2 sensor is well before that. From what I have been reading on the forums it should give you a bit of a gain in HP and every time you gain HP from the exhaust side you should gain a slight amount of fuel economy. I can't comment about your emission laws but I hear that the primary cat does most the work so you should be fine.
Appreciate 0
      01-22-2013, 03:17 PM   #11
manutdas11
EL JIMMY NEURON
manutdas11's Avatar
United_States
13
Rep
1,209
Posts

 
Drives: Jet Black E90
Join Date: Aug 2012
Location: in the Napa Valley/SJ...

iTrader: (0)

: :
__________________
2007 Jet Black E90 328i
Thread: http://www.e90post.com/forums/showthread.php?t=825249
Instagram: manutd_as
Appreciate 0
      01-22-2013, 04:30 PM   #12
andrey_gta
Brigadier General
andrey_gta's Avatar
Canada
54
Rep
3,380
Posts

 
Drives: 130i coupé ;)
Join Date: Nov 2011
Location: Bimmerpost

iTrader: (1)

Garage List
2008 BMW 128i  [0.00]
back on topic

Use search

Yes cat delete of main cat does through codes, 20hp if not more
__________________
128i Sport 6MT converted to Euro 130i spec, tuned by evolve ~220 whp 207 wtq(ft-lb) SAE
In-progress: e36M lip Wishlist: //M front arm, coils, n55 eng mnt, headers, LSD, e60 finn diff


"The 1-series is the last car that BMW engineered before the Germans, as a car-making culture, fell out of love with driving." - R&T 2013 135is
Appreciate 0
      01-22-2013, 04:49 PM   #13
crasa21
New Member
0
Rep
25
Posts

 
Drives: 2007 328xi coupe
Join Date: Nov 2012
Location: chicago

iTrader: (0)

I have a samsung gs3. I'm on the sprint network. Yes, I did use your geographic location to insult you. However, the term "hillbilly" was meant to demean (spelling, sorry) the mentality or intellegence of you due to your geographic location.

And I guess it looks like I'm a hillbilly also since I can't figure out a simple search function on my phone. Lol

Now, back to the topic: thank you everyone that gave me straight jt
Appreciate 0
      01-22-2013, 07:05 PM   #14
kamek
Brigadier General
United_States
60
Rep
3,180
Posts

 
Drives: 328xi 6MT
Join Date: Mar 2008
Location: Queens, NY

iTrader: (4)

Garage List
2008 BMW 328xi  [4.10]
Send a message via AIM to kamek
You should understand what cats are and where they're located before you go sawing things off.
__________________

E92 328xi | KW | AA | LUX | OEM 359M | BMW Performance Exhaust
Appreciate 0
      01-22-2013, 09:57 PM   #15
BRGmatthew
Bausman
BRGmatthew's Avatar
United_States
22
Rep
1,815
Posts

 
Drives: around the block
Join Date: Sep 2009
Location: SoCal 626/NorCal 650

iTrader: (19)

Send a message via AIM to BRGmatthew
http://lmgtfy.com/?q=e90+cat+delete
Appreciate 0
      01-23-2013, 06:45 AM   #16
crasa21
New Member
0
Rep
25
Posts

 
Drives: 2007 328xi coupe
Join Date: Nov 2012
Location: chicago

iTrader: (0)

I understand exactly what the cats do and also how they accomplish it. What I don't understand is what all the sensors do. Well, why all the sensors. I understand the theory of them, most anyway.
Appreciate 0
      01-23-2013, 08:47 AM   #17
DUI Elite
///M at Heart
DUI Elite's Avatar
22
Rep
1,714
Posts

 
Drives: 2006 SGM E90
Join Date: Jan 2011
Location: Chicago, IL

iTrader: (4)

Quote:
Originally Posted by andrey_gta View Post
back on topic

Use search
lmao
Appreciate 0
Reply

Bookmarks

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
Forum Jump


All times are GMT -5. The time now is 12:31 AM.




e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST