ZPOST
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read


Go Back   ZPOST > BMW Z4 Technical Talk > Engine, Exhaust, Drivetrain Modifications
  TireRack

SUPPORT ZPOST BY DOING YOUR TIRERACK SHOPPING FROM THIS BANNER, THANKS!
Post Reply
 
Thread Tools Search this Thread
      09-13-2013, 06:47 PM   #1
Hedward
Private First Class
Hedward's Avatar
United_States
60
Rep
115
Posts

Drives: 2007 BMW M Roadster
Join Date: Dec 2010
Location: Pennsylvania

iTrader: (0)

Exhaust question

I'm planning on euro headers and DKF section 1 pipes with 300 cell cats; the rest of the system remaining stock.
Trying to get a general idea of the expected change in the noise level. Does anyone know the size of the primary and secondary cats on the NA version.
Thanks in advance.
Appreciate 0
      09-13-2013, 07:35 PM   #2
ZStig
instagram 997turbotom
279
Rep
7,376
Posts

Drives: Interlagos Z4MR
Join Date: Jun 2008
Location: Delray Beach, FL

iTrader: (4)

you can go fairly open flow in the cats and section one, and it will be fairly tame in volume and without drone, if you don't go messing with the crosspipe part and the mufflers.

What dimentions do you need on the secondary cats?
__________________
Appreciate 0
      09-13-2013, 07:57 PM   #3
Hedward
Private First Class
Hedward's Avatar
United_States
60
Rep
115
Posts

Drives: 2007 BMW M Roadster
Join Date: Dec 2010
Location: Pennsylvania

iTrader: (0)

I was curious of the existing flow or cell count of the primaries (which will be gone) and the secondaries (which will be replaced with 300 cell DKF's.
I have a bit too much grey at the temples to be running around town confused as a street racer.
Also, the size or cell count of the euro cats which I believe to be more restrictive than the DKF 300's.
Appreciate 0
Post 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



All times are GMT -5. The time now is 12:17 PM.




zpost
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
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