BMW M3 Forum
BMW M3 Forum BMW M3 Gallery BMW M3 Reviews BMW M3 Social Groups BMW M3 Chat M3Forum Sponsors >>
Loading


Mobile M3forum
Go Back   BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X) > BMW M3 Discussions > E46 M3 (2001-2006)
Tire Rack Buy Winter Tires Now!
Not a member? Register Now!
Register Gallery All Albums Garage Search Today's Posts Mark Forums Read Calendar FAQ

E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


Reply
 
Thread Tools Display Modes
Old Sun, Dec-02-2018, 10:17:39 PM   #41
hatuey
Registered User
 
Join Date: Jul 2018
Posts: 60
In the garage:
Reputation: 0 hatuey is on a distinguished road
Location: Los Angeles

United States




Default Re: Rasp

So torn. I really really want some headers, but living in California makes that a total hassle.

I thought about maybe still getting them and then putting on the stock headers every year to get smogged and back again. But then I go look at install videos and man that just seems like a major hassle.
Jump to top hatuey is online now   Reply With Quote
Sponsored Links
Register now and remove these ads
Old Sun, Dec-02-2018, 11:54:03 PM   #42
Zekarus
Registered User
 
Join Date: Apr 2018
Posts: 9
Reputation: 0 Zekarus is on a distinguished road

Germany




Default Re: Rasp

Quote:
Originally Posted by hatuey View Post
So torn. I really really want some headers, but living in California makes that a total hassle.

I thought about maybe still getting them and then putting on the stock headers every year to get smogged and back again. But then I go look at install videos and man that just seems like a major hassle.
I have read several times here that you will pass with euro/csl header and euro cats.
Jump to top Zekarus is offline   Reply With Quote
Old Mon, Dec-03-2018, 12:02:44 AM   #43
newton22
Registered User
 
Join Date: Jun 2014
Posts: 311
In the garage:
Reputation: 0 newton22 is on a distinguished road
Location: Austin

United States




Default Re: Rasp

Quote:
Originally Posted by TboneM3 View Post
As far as I'm concerned, when talking exhaust sound for this car, you have to qualify it with either stock size piping, most important at the headers moving back, roughly 2"-2.25"-2.36" or SS/custom 2.5" all the way or most of the way.

Most of you wouldn't understand as vast majority have stock size piping for all or most of their sections, but it's a game changer.

Slap an ss race on a stock m3 and it sounds horrible *except maybe above 6k

But a full SS system with race (hell, any muffler almost) is amazing.

I want my car loud and nasty, a cacophony of all that is right about motorsports. I want a religious experience lol. Don't want to tame it down. But you go right ahead...
Alternatively just straight pipe so rasp becomes drowned out by racecar overruns lol.

My car a year ago:
Ian Kley's car before it died:

However the older I get, the more I agree with Obioban. Go quiet with the exhaust and start messing with the intake.
__________________

Ground Control / APEX / AKG / Fabspeed / Rogue Engineering / Momo / Kirk
Jump to top newton22 is offline   Reply With Quote
Old Mon, Dec-03-2018, 12:06:01 AM   #44
icecream
Registered Apples
 
icecream's Avatar
 
Join Date: Aug 2012
Age: 14
Posts: 2,416
In the garage:
Reputation: 0 icecream is on a distinguished road
Location: PNW

United States




Default Re: Rasp

Quote:
Originally Posted by TboneM3 View Post
As far as I'm concerned, when talking exhaust sound for this car, you have to qualify it with either stock size piping, most important at the headers moving back, roughly 2"-2.25"-2.36" or SS/custom 2.5" all the way or most of the way.

Most of you wouldn't understand as vast majority have stock size piping for all or most of their sections, but it's a game changer.

Slap an ss race on a stock m3 and it sounds horrible *except maybe above 6k

But a full SS system with race (hell, any muffler almost) is amazing.

I want my car loud and nasty, a cacophony of all that is right about motorsports. I want a religious experience lol. Don't want to tame it down. But you go right ahead...
If an SS System really does make it sound oh so nastie and a cacophony of noise, thats a hard pass. Last thing I want is a discordant meaningless mixture of sounds ŗ la every charger in LA lol.

Op, get an AR20. Even if you lost 2hp (which you won't) its not like youre running 10's whuppin teslas at the track so who cares?
Jump to top icecream is offline   Reply With Quote
Old Mon, Dec-03-2018, 12:08:24 AM   #45
Dr M3an M3
GroupBuyingPower@outlook. com
 
Dr M3an M3's Avatar
 
Join Date: Mar 2016
Posts: 3,323
In the garage:
Reputation: 0 Dr M3an M3 is on a distinguished road
Location: Columbia, SC

United States




Default Re: Rasp

Quote:
Originally Posted by icecream View Post
If an SS System really does make it sound oh so nastie and a cacophony of noise, thats a hard pass. Last thing I want is a discordant meaningless mixture of sounds ŗ la every charger in LA lol.
Muffler choice is what will dictate most how civilized or not your exhaust sounds (pre or post) headers. Supersprint LWR muffler with V1 headers is SAVAGE. Supersprint Street muffler with V1 headers is quieter and more reserved than stock (as per Obioban).
__________________
2004 E46 ///M3 - Oxford Green Metallic II + Cinnamon SMG
IG: DrM3anM3

Mods: Genuine OE CSL Bumper, Both Karbonius and Streamline CSL Airboxes, OE CSL Snorkel w/ working Flap, OE Map Sensor + OE Air Rail, Paul Claude Custom Tune, CSL Engine management with CSL converted DME, Supersprint V1 Stepped Headers w/ Oversized Catless section 1, SS 2.5" Twin-Piped Oversized section 2, Rogue Engineering Muffler (soon to be switched), WPC treated rod-bearings, VinceBar (weld) + Redish Plates, Full Beisan VANOS lockdown, BBS LMs w/ PSS, CSL style CF diffuser, Vorsteiner CF CSL Bootlid, CSL SMG Engine DME tune, CSL '255' SMG DME tune.
Active Group-Buys (PM if Interested): OE CSL Bootlids, Supersprint Headers/Exhaust MEGA thread, New Supersprint Oversized Twin-Piped Section 2 ...and more to come!
Please PM me - In search of: Nothing at the moment.
Jump to top Dr M3an M3 is offline   Reply With Quote
Old Mon, Dec-03-2018, 12:35:21 AM   #46
hatuey
Registered User
 
Join Date: Jul 2018
Posts: 60
In the garage:
Reputation: 0 hatuey is on a distinguished road
Location: Los Angeles

United States




Default Re: Rasp

Quote:
Originally Posted by Zekarus View Post
I have read several times here that you will pass with euro/csl header and euro cats.
Good to hear that. I think I might have come across a post or two that kinda said that.

So with that said and let me know if I have this correct. US headers have cats and no cats in section 1. Euro headers don't have cats but cats are in section 1.

And if that passes smog in California.

Would that also be roughly the same for say Supersprint headers and the euro section 1 with cats?
Jump to top hatuey is online now   Reply With Quote
Old Mon, Dec-03-2018, 02:15:08 AM   #47
matty088
Registered User
 
Join Date: Jun 2006
Posts: 123
Reputation: 0 matty088 is on a distinguished road





Default Re: Rasp

U got it right. But technically it would fail in Cali if the tech is savvy Bc the cats are not in oem location

That’s what I read at least. I live in ct
Jump to top matty088 is offline   Reply With Quote
Old Mon, Dec-03-2018, 02:29:21 AM   #48
matty088
Registered User
 
Join Date: Jun 2006
Posts: 123
Reputation: 0 matty088 is on a distinguished road





Default Re: Rasp

Just checked out the supersprint. That is some good stuff. But far too expensive. I canít see value in running stepped headers and not running stepped the entire run. So this is a pass
Jump to top matty088 is offline   Reply With Quote
Old Mon, Dec-03-2018, 04:22:08 AM   #49
hatuey
Registered User
 
Join Date: Jul 2018
Posts: 60
In the garage:
Reputation: 0 hatuey is on a distinguished road
Location: Los Angeles

United States




Default Re: Rasp

Quote:
Originally Posted by matty088 View Post
U got it right. But technically it would fail in Cali if the tech is savvy Bc the cats are not in oem location

Thatís what I read at least. I live in ct
Makes sense and thanks.
Jump to top hatuey is online now   Reply With Quote
Old Mon, Dec-03-2018, 06:00:42 AM   #50
HassanEido
Registered User
 
HassanEido's Avatar
 
Join Date: Oct 2014
Posts: 3,432
In the garage:
Reputation: 0 HassanEido is on a distinguished road

Lebanon




Default Re: Rasp

Quote:
Originally Posted by matty088 View Post
Just checked out the supersprint. That is some good stuff. But far too expensive. I can’t see value in running stepped headers and not running stepped the entire run. So this is a pass
What does 'stepped the entire run' even mean.
The stepped header design means its primaries start the same ID as the exhaust port and 'step' up or expand about midway to create a negative pressure wave for better scavenging and allow for more flow.
You can pass or think it's expensive regardless, but that's what stepped headers mean.
__________________

Mods:
-Custom CF airbox
-SSV2 catless headers(with a modified collector extention), Custom 2.5" dual sec1, Custom sec2 2.5" dual with e9xM X pipe, SuperSprint Race inspired custom section 3..
-Cat Cams 280 272.
-Custom dyno tune
-Tms pulleys and electric fan conversion
368.4 whp 289.1 wtq

Custom exhaust thread and dyno http://m3forum.net/m3forum/showthread.php?t=569086
Cams thread and dyno http://m3forum.net/m3forum/showthread.php?t=554439
Custom cf airbox thread http://m3forum.net/m3forum/showthread.php?t=595180
Why not to use after market bearings with surfacetreatments and /or increased clearance
http://www.m3forum.net/m3forum/showp...4&postcount=10

Last edited by HassanEido; Mon, Dec-03-2018 at 07:07:07 AM.
Jump to top HassanEido is online now   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

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. The time now is 09:50:05 AM.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
M3Forum.com and M3forum.net is in no way sponsored, endorsed or affiliated by or with BMW NA / BMW AG or any of it's subsidiaries or vendors.
BMW and M3 (E90 M3 | E92 M3 | E93 M3 | E46 M3 | E36 M3 | E30 M3) are registered trademarks of BMW AG.
M3Forum Terms of Service
Copyright ©1999-2017 M3Forum.com
Discussing Rasp in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)