E90Post
 


Extreme Power House
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Secondary cats delete



Reply
 
Thread Tools Search this Thread
      02-24-2014, 09:16 PM   #1
N54bimmer
Private
0
Rep
98
Posts

Drives: E92 n54
Join Date: Apr 2011
Location: North America

iTrader: (0)

Secondary cats delete

Just wondering if anyone has any experience with a secondary cat delete on a stock exhaust. I read a few threads, but wanted more opinions, how much of an affect does it have on sound?
Appreciate 0
      02-25-2014, 02:09 AM   #2
NOTM3
Lieutenant
4
Rep
453
Posts

Drives: E90 335i
Join Date: Jun 2013
Location: Ft lauderdale

iTrader: (3)

Garage List
its not a huge difference in sound
Appreciate 0
      02-25-2014, 05:55 AM   #3
bmwm3redblack
Captain
bmwm3redblack's Avatar
16
Rep
859
Posts

Drives: BMW ///M3 E46, BMW 335XI
Join Date: Jan 2011
Location: e13 osl

iTrader: (0)

I've done mine deleted,and very happy for now, the sound is louderand more distinct.
There is a slight drone between 1500-1800 rpm. But in general I 'm allright with it.

Btw I ve gotcatless dp's aswell!!!
__________________
Bmw 335xi/FBO/ black on black/ 6sp manual/Cobb AP/BMS DCI/AA BOV KIT/VRSF DP'S/VRSF 7'FMIC /FULLY CATLESS/H&R sport springs/ 19' ac schnitzer wheels.
Appreciate 0
      02-25-2014, 09:36 AM   #4
HighPSI
Banned
3
Rep
281
Posts

Drives: E92 335i
Join Date: Nov 2012
Location: Toronto

iTrader: (0)

If you're going to do it, replace the secondaries with Vibrant resonators
Appreciate 0
      02-25-2014, 01:35 PM   #5
N54B30
SIKH
N54B30's Avatar
2
Rep
280
Posts

Drives: 2009 BMW 335i
Join Date: Nov 2013
Location: Nor Cal

iTrader: (1)

Quote:
Originally Posted by HighPSI View Post
If you're going to do it, replace the secondaries with Vibrant resonators
What is the purpose of replacing replacing the secondary cats with resonators versus a section of straight pipe? Any pictures and product numbers? Change in sounds/volume?

Thanks!
Appreciate 0
      02-25-2014, 03:50 PM   #6
bmwm3redblack
Captain
bmwm3redblack's Avatar
16
Rep
859
Posts

Drives: BMW ///M3 E46, BMW 335XI
Join Date: Jan 2011
Location: e13 osl

iTrader: (0)

Quote:
Originally Posted by E92 N54 View Post
What is the purpose of replacing replacing the secondary cats with resonators versus a section of straight pipe? Any pictures and product numbers? Change in sounds/volume?

Thanks!
The purpose is to avoid drone in lower rpm. But for me the sound is all right,and if you are on a highway for a long time, just keep above 2000rpm and it will sound awesome. IMO
__________________
Bmw 335xi/FBO/ black on black/ 6sp manual/Cobb AP/BMS DCI/AA BOV KIT/VRSF DP'S/VRSF 7'FMIC /FULLY CATLESS/H&R sport springs/ 19' ac schnitzer wheels.
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 11:25 AM.




e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2015, 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