E90Post
 


GT Haus
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > Any N52 Owners with High Flow Cats?



Reply
 
Thread Tools Search this Thread
      12-27-2010, 08:45 PM   #1
3002 tii
Major General
3002 tii's Avatar
United_States
140
Rep
8,593
Posts

 
Drives: flat out
Join Date: Apr 2008
Location: NNJ

iTrader: (50)

Garage List
Any N52 Owners with High Flow Cats?

If so, could you post which brand you went with? Also was it 100 cell? How was fitment / install?

Any drone, smell, etc.?


Any before / after dynos?
__________________

Recaro | Volk | AST | Vorshlag | Quaife | Stoptech | Active Autowerke | BMW Performance

Click here for my track videos
Appreciate 0
      12-27-2010, 10:25 PM   #2
c_jeong89
Banned
United_States
27
Rep
2,097
Posts

 
Drives: E90 TiAg
Join Date: Feb 2009
Location: Irvine/Bay Area

iTrader: (16)

i took out my secondary cats with my bmw performance exhaust, no drone, no smell
Appreciate 0
      12-28-2010, 07:11 AM   #3
StealYourFace
Major
United_States
15
Rep
1,187
Posts

 
Drives: 2006 330i sport
Join Date: Jul 2009
Location: Shakedown Street, Buffalo NY

iTrader: (1)

Quote:
Originally Posted by c_jeong89 View Post
i took out my secondary cats with my bmw performance exhaust, no drone, no smell
Did you notice any power? Do you like the sound?
__________________
330i ~ BMW Perf. Susp. ~ M3 Front susp ~ BMW Perf Exhaust ~ 3.38 lsd ~ SF71 Alf CSL reps ~ Pilot Super Sports ~ AA Tune ~ 335is front brakes ~ over 150,000 miles hardly broken in! WTB: e93 M3 Front Sway Bar
Appreciate 0
      12-28-2010, 03:02 PM   #4
c_jeong89
Banned
United_States
27
Rep
2,097
Posts

 
Drives: E90 TiAg
Join Date: Feb 2009
Location: Irvine/Bay Area

iTrader: (16)

i like the sound just a bit louder. Power wise, on paper it should be there but can i feel it, not really. Wasn't expecting to either but I wanted to make the exhaust a little louder and this was the only way to go without touching the primary cats.
Appreciate 0
      12-28-2010, 04:23 PM   #5
StealYourFace
Major
United_States
15
Rep
1,187
Posts

 
Drives: 2006 330i sport
Join Date: Jul 2009
Location: Shakedown Street, Buffalo NY

iTrader: (1)

Quote:
Originally Posted by c_jeong89 View Post
i like the sound just a bit louder. Power wise, on paper it should be there but can i feel it, not really. Wasn't expecting to either but I wanted to make the exhaust a little louder and this was the only way to go without touching the primary cats.
Thats cool- I'd like to hear it a bit more when the windows are up.
__________________
330i ~ BMW Perf. Susp. ~ M3 Front susp ~ BMW Perf Exhaust ~ 3.38 lsd ~ SF71 Alf CSL reps ~ Pilot Super Sports ~ AA Tune ~ 335is front brakes ~ over 150,000 miles hardly broken in! WTB: e93 M3 Front Sway Bar
Appreciate 0
      12-28-2010, 04:49 PM   #6
denniel
Private First Class
1
Rep
119
Posts

 
Drives: E90 330i
Join Date: Mar 2009
Location: Vancouver

iTrader: (1)

Quote:
Originally Posted by c_jeong89 View Post
i took out my secondary cats with my bmw performance exhaust, no drone, no smell
will it show the engine light when you cut it off the cats
Appreciate 0
      12-28-2010, 05:36 PM   #7
superduty
Private First Class
superduty's Avatar
United_States
1
Rep
119
Posts

 
Drives: 2010 E91 M Sport
Join Date: Dec 2009
Location: Tucson, Az

iTrader: (0)

Quote:
Originally Posted by denniel View Post
will it show the engine light when you cut it off the cats
You can remove the 2nd cats and not throw a code.
__________________
"Did I say something abnormal?"
"You're an engineer, everything you say is abnormal."
Appreciate 0
      12-31-2010, 09:22 PM   #8
denniel
Private First Class
1
Rep
119
Posts

 
Drives: E90 330i
Join Date: Mar 2009
Location: Vancouver

iTrader: (1)

Quote:
Originally Posted by superduty View Post
You can remove the 2nd cats and not throw a code.
but i was running supersprint heades
Appreciate 0
      12-31-2010, 11:29 PM   #9
c_jeong89
Banned
United_States
27
Rep
2,097
Posts

 
Drives: E90 TiAg
Join Date: Feb 2009
Location: Irvine/Bay Area

iTrader: (16)

well yea for headers you will need to get an O2 sensor for the code, but that's bc those are primary cats, not secondaries. Deleting secondary cats will not cause any error codes.
Appreciate 0
      01-02-2011, 04:43 AM   #10
AlpineSwift
Colonel
AlpineSwift's Avatar
United_States
26
Rep
2,110
Posts

 
Drives: 2008 335Xi Coupé
Join Date: Feb 2010
Location: Castle Rock, CO

iTrader: (3)

I'm still waiting to see the first person go in for a sniffer test with headers and the secondaries still installed. That'll probably be the deal breaker for me.
__________________
E92 '08 335Xi 6AT - Cobb AP V2, ar design DP's, Race Cats in the mids, Stock cans, VRSF CP w/Tial BOV, VRSF 7" FMIC, BMS DCI, BMS Cowl, H&R Coilovers, Renn Motorsport RS-51's, Alpina TCU Flash, Turner Boost Gauge, Fully Coded.
Best 1/4mi: 13.201 @ 106.93 / 2.0 60' / DA=9300ft

Tanya: The Build Thread
Appreciate 0
      01-02-2011, 09:07 AM   #11
superduty
Private First Class
superduty's Avatar
United_States
1
Rep
119
Posts

 
Drives: 2010 E91 M Sport
Join Date: Dec 2009
Location: Tucson, Az

iTrader: (0)

Quote:
Originally Posted by AlpineSwift View Post
I'm still waiting to see the first person go in for a sniffer test with headers and the secondaries still installed. That'll probably be the deal breaker for me.
Do they sniff OBDII cars in CO? In AZ they just pull the data from the O2 sensors via the diagnostic port. There is still a visual inspection tho'.
__________________
"Did I say something abnormal?"
"You're an engineer, everything you say is abnormal."
Appreciate 0
      01-02-2011, 09:09 AM   #12
Express
Major General
Express's Avatar
Israel
129
Rep
8,701
Posts

 
Drives: 06 330i
Join Date: Dec 2008
Location: The Promise Land

iTrader: (17)

Garage List
2006 BMW 330i  [4.15]
Quote:
Originally Posted by superduty View Post
Do they sniff OBDII cars in CO? In AZ they just pull the data from the O2 sensors via the diagnostic port. There is still a visual inspection tho'.
depends what county you live in
Appreciate 0
      01-03-2011, 04:02 AM   #13
AlpineSwift
Colonel
AlpineSwift's Avatar
United_States
26
Rep
2,110
Posts

 
Drives: 2008 335Xi Coupé
Join Date: Feb 2010
Location: Castle Rock, CO

iTrader: (3)

Douglas does the sniffer, visual and scan. Its a bitch to live here some times...
__________________
E92 '08 335Xi 6AT - Cobb AP V2, ar design DP's, Race Cats in the mids, Stock cans, VRSF CP w/Tial BOV, VRSF 7" FMIC, BMS DCI, BMS Cowl, H&R Coilovers, Renn Motorsport RS-51's, Alpina TCU Flash, Turner Boost Gauge, Fully Coded.
Best 1/4mi: 13.201 @ 106.93 / 2.0 60' / DA=9300ft

Tanya: The Build Thread
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 09:41 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