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, 03:05:09 AM   #11
KS Golfer
Registered User
 
Join Date: Sep 2011
Posts: 659
Reputation: 0 KS Golfer is on a distinguished road
Location: Wichita

United States




Default Re: Rasp

irrelevant.
__________________
Jump to top KS Golfer is offline   Reply With Quote
Sponsored Links
Register now and remove these ads
Old Sun, Dec-02-2018, 03:22:01 AM   #12
matty088
Registered User
 
Join Date: Jun 2006
Posts: 126
Reputation: 0 matty088 is on a distinguished road





Default Re: Rasp

Quote:
Originally Posted by KS Golfer View Post
the stock exhaust already has a resonator in sect 2 if i remember correctly? but sect 1 only a single resonator on one side of the dual exhaust. you need resonators on both sides.

this is what you want. well...there are cheaper routes, but I have this (and a supersprint resonated sect 2, and supersprint sport muffler).
https://www.bimmerworld.com/Exhaust/...er-E46-M3.html

That looks like quality but holy cow. It seems like you guys are adding so much to the exhaust system. Are you actually increasing flow after adding all these resonators
Jump to top matty088 is offline   Reply With Quote
Old Sun, Dec-02-2018, 03:30:30 AM   #13
KS Golfer
Registered User
 
Join Date: Sep 2011
Posts: 659
Reputation: 0 KS Golfer is on a distinguished road
Location: Wichita

United States




Default Re: Rasp

in my case, my #1 objective with the exhaust was sound, of which that included eliminating rasp. so i threw all the resonators at it. it's also a bit of planning for the future, because i think you're right in that you probably don't need all three. but long term I'm planning on CSL headers and catted section 1, which means I would need that resonator in section 2 eventually.

in the end my setup sounds 1,000,000% better than stock, makes a few more hp, and is a few pounds lighter. yes, it was ****ing expensive to get there, but most things are with this car. i also just bought an evolve airbox, primarily for the sound....which brings my total to like $5-$6k mostly for "superficial" reasons like sound, with the performance bump being a nice fringe benefit.


no rasp, and no resonators in sect 1, just cats, with the resonator in sect 2. i like this setup because it sounds good without having too much volume like some others that drowns out the glorious intake noise, which I will soon be amplifying.
__________________

Last edited by KS Golfer; Sun, Dec-02-2018 at 03:34:49 AM.
Jump to top KS Golfer is offline   Reply With Quote
Old Sun, Dec-02-2018, 04:02:59 AM   #14
rovert604
Registered User
 
rovert604's Avatar
 
Join Date: Feb 2014
Age: 40
Posts: 737
Reputation: 0 rovert604 is on a distinguished road
Location: Vancouver, BC

Canada




Default Re: Rasp

I spent $40 from eBay on an AR20, in-line with the OEM resonator and a buddy welded it up really good...



Rasp was reduced by about 80%. I still get some light rasp from the exterior at high RPM. But nothing is heard on the interior.

__________________
--Trevor in 604--
Vancouver, BC, Canada
Jump to top rovert604 is online now   Reply With Quote
Old Sun, Dec-02-2018, 04:06:12 AM   #15
Dr M3an M3
GroupBuyingPower@outlook. com
 
Dr M3an M3's Avatar
 
Join Date: Mar 2016
Posts: 3,324
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 matty088 View Post

I want to make my car a bit quicker but judging from the YouTube vids I hear, adding headers and an exhaust donít sound great at all. Sounds like a civic. I canít be doing that. I been looking at euro headers and euro cats. But man thatís a lot of dough to spend for a tiny increase in power. I canít imagine simply moving the cats from the headers to the mid section is going to offer much (going from USA spec to euro spec) power. What are people getting with euro headers and cats and stock exhaust ?
Adding a loud muffler with stock headers sounds like a civic...Adding good headers sounds incredibly exotic. Literally nothing like a civic. Stepped headers added an irreplaceably good sound and gobs of sound. I'll never go back. The video I posted reflects the mods in my signature....Nothing like a civic in noise.
__________________
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 Sun, Dec-02-2018, 04:12:55 AM   #16
KS Golfer
Registered User
 
Join Date: Sep 2011
Posts: 659
Reputation: 0 KS Golfer is on a distinguished road
Location: Wichita

United States




Default Re: Rasp

rovert for sure went the smart economical way. i can't weld, and i don't know anyone locally i trust, but i can bolt shit together and i got the RTX pipe for a deal last BF. besides, it looks killer and you get TWO HORSEPOWER!!!!!!
__________________
Jump to top KS Golfer is offline   Reply With Quote
Old Sun, Dec-02-2018, 04:43:24 AM   #17
TboneM3
YNWA
 
TboneM3's Avatar
 
Join Date: Oct 2009
Posts: 8,094
In the garage:
Reputation: 0 TboneM3 is on a distinguished road
Location: Socal

United States




Default Re: Rasp

No rasp = Boooooring
__________________
/// 2004 SilberGrau M3 ∑ Coupe ∑ 6MT ∑ slicktop ∑ manual seats ∑ zero options ∑ JOURNAL
-NA S54-


∑Evolve-R Alpha N ∑ Evolve CSL CF Airbox ∑ Eventuri Scoop ∑ Supersprint V1 stepped 63mm ∑ SS V1 S pipe 63mm + 200 cell HFC ∑ OE sect 2 60mm ∑ SS Sport 60mm
∑Besian ∑ RE pullies/fan delete ∑ WPC rod bearings ∑ GroundControl S/A (Koni/Eibach 440/550) + tall RSMs ∑ TMS Camber & Subframe plates ∑ SPC Adj alloy rear camber arms
∑RE Trans Mounts ∑ AKG poly SUB/DIFF 95a ∑ SDW RTAB ∑ Weighted ///M knob + UUC DSSR + delrin carrier bush ∑ OE CSL trunk ∑ APEX 75mm Studs
∑Sportline 8S 18"x8.5/9.5" ∑ MPSS 245/275 ∑ Brembo 996 36/40 345mm CSL Textar FF & 28/30 328mm CSL ATE "D738" FF ∑ CM brackets & ss/teflon lines
∑Pioneer DEH-80PRS ∑ Eclipse PA5422 ∑ CDT HD-6 + WS-100i ∑ CDT EX-530 ∑ 8" Kicker

DD/Beater: 1999 Civic LX - Kenwood x998 ∑ PPI 1600.4 ∑ CDT HD-6 + HD-100 ∑ CDT EX-530 ∑ DVC 10"
Jump to top TboneM3 is online now   Reply With Quote
Old Sun, Dec-02-2018, 04:44:55 AM   #18
Paulo M
Registered User
 
Join Date: Jan 2015
Posts: 2,016
Reputation: 0 Paulo M is on a distinguished road

United States




Default Re: Rasp

Quote:
Originally Posted by rovert604 View Post
I spent $40 from eBay on an AR20, in-line with the OEM resonator and a buddy welded it up really good...



Rasp was reduced by about 80%. I still get some light rasp from the exterior at high RPM. But nothing is heard on the interior.

https://youtu.be/bCMsWhKtTvE
I did this, along with stock muffler. I wouldn’t say 80% reduction more like 20% less, for mine anyway. But it’s noticeably less raspy.

OP, I suggest just appreciating the rasp. Most exotics have rasp. It’s how you incorporate that rasp with the overal sound of the car. Catless headers and proper muffler definitely has potential to make the rasp sound good.
__________________
BREMBO BBS DIXIS
Jump to top Paulo M is online now   Reply With Quote
Old Sun, Dec-02-2018, 04:54:04 AM   #19
KS Golfer
Registered User
 
Join Date: Sep 2011
Posts: 659
Reputation: 0 KS Golfer is on a distinguished road
Location: Wichita

United States




Default Re: Rasp

Quote:
Originally Posted by TboneM3 View Post
No rasp = Boooooring
__________________
Jump to top KS Golfer is offline   Reply With Quote
Old Sun, Dec-02-2018, 04:59:24 AM   #20
rovert604
Registered User
 
rovert604's Avatar
 
Join Date: Feb 2014
Age: 40
Posts: 737
Reputation: 0 rovert604 is on a distinguished road
Location: Vancouver, BC

Canada




Default Re: Rasp

Quote:
Originally Posted by Paulo M View Post
I did this, along with stock muffler. I wouldnít say 80% reduction more like 20% less, for mine anyway. But itís noticeably less raspy.

Itís weird. My friendís car is a 2002 and he hardly has rasp without any mods. When my car was OEM like his, he commented on how much more raspy mine was. I guess everyoneís car is different! Mine was a complete sack of metal bits compared to now. So for me, the reduction is far better than your 20% experience. I wonder what makes different cars differ. I guess itís hit or miss in some cases. I love the sound of my car now. The tone sounds closer to what my ZHP had with Supersprint sport muffler, but with some added extra craziness. LOL
__________________
--Trevor in 604--
Vancouver, BC, Canada
Jump to top rovert604 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 06:42:32 PM.


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)