Quad Exhaust / both sides of diffuser

[Hermes]

First off I'm gonna say I'm not even thinking of this but it came up earlier and did a little looking around so I thought I'd share. Has anyone seen one of these setups? What kind of power loss is there cause there has to be some at least, anybody know? Maybe not as much from the Remus' design but still...

(Albert, I vaguely remember you telling me you were thinking M3 exhaust, this is a more reasonable yet still not cheap option)




Eisenmann

http://www.eisenhaus.com/gallery/pics/E46quad3.jpg

http://vrechise.com/getimage.php?i=eie36exhaust1.jpg
Quad
$1651.16


http://vrechise.com/getimage.php?i=eie36exhaust3.jpg
Dual Oval
$1707.37



Remus

http://www.bavauto.com/assets/imglib500/rm089000_1994g.jpg
Quad
$999.95


http://www.bavauto.com/assets/imglib500/rm089000_1995g.jpg
Dual Round
$796.95

[UdubBadger]

FYI bud that Eisenmannexhaust.com is knockoff Eisenmann's.


Secondly... damn that 1st photo looks HOT.

I don't think there is power loss... I swapped my single sided 135i exhaust to a quad and I GAINED power from back pressure release (minimal though).


I had a Remus on my 328 E90 and it was nice but no where close to an Eisenmann.

[bullfrogs_M3]

NO

NO

Bad Exhaust, BAD EXHAUST!!!!!

Do you an M next to your 3 little ZHP?!

http://www.vote4jokes.com/images/baddog.jpg

[Gheybe]

No power loss.

[Hermes]

Now that I've looked at the pic more closely I see the quality in the Eisenmann setup. W/regards to fake or not I posted that pic just to show what it would look like. I would love to see a pic of the interior of the system so I know what kind of backpressure it will create, just couldn't find one

[UdubBadger]

no worries, just wanted you to know in case you end up buying or someone else sees this and does. I am good friends with the guy who runs Eisenmann North America (IND Distribution) and there was a big problem with some fake Eisenmanns getting loose on the market a few years back.

[Hermes]

Damnit my links are wrong, gotta find some new ones... Can you post the right ones (Im on my phone, will delete the old ones)

[Au2bahn]

Is there a diffuser that will take quad exhaust like that.

[mikeyb74]

Is there a diffuser that will take quad exhaust like that.

No you would have to modify yours.

[Au2bahn]

No you would have to modify yours.

Will it route perfectly or will there be modifications involved?

[RVAzhp]

not a fan of double exhausts when not needed, this includes in the M3 with its fake duel exhaust. it does look cool though, just wouldn't go through all the hassle.

[Hermes]

Will it route perfectly or will there be modifications involved?

There are still mods necessary with these systems to get them to hang

[imola red zhp]

not a fan of double exhausts when not needed, this includes in the M3 with its fake duel exhaust. it does look cool though, just wouldn't go through all the hassle.

I agree RVA, I think just modfying the stock exhaust is adequate, any drastic cosmetic changes (like copying as M3) would make your car look like a wannabe M3. IMHO.

[UdubBadger]

I like it personally... M3 exhaust is more centered anyway. Nobody would think you're copying an M3 unless you put an ///M badge on the car.

[RVAzhp]

a lot of work for basically something that is just sorta "wanna be" to me. i'm not even sure why they gave the m3, s2000 and other inline engine's duel exhaust. but in that picture it certainly doesn't look bad.

[Hermes]

a lot of work for basically something that is just sorta "wanna be" to me. i'm not even sure why they gave the m3, s2000 and other inline engine's duel exhaust. but in that picture it certainly doesn't look bad.

I agree, such a joke they put this style exhaust when it's not a true dual. Seems people just want the look...

GruppeM exhaust for M3, still not a real dual
http://www.dtmpower.net/forum/attachments/bmw-parts-sale/34138d1180033282-e46-m3-gruppem-titanium-exhaust-exi0116.jpg

[longhorn zhp]

I have my diffuser altered to have the dual set up. I deleted resonator and installed a magnaflow with dual outs. I love the dual look, the only issue I am having is that the battery housing is preventing me from tucking my tips the way I really want them. I am either going to re route my pipe or adjust my battery housing.I have also found a company, Unlimited Power that is selling the csl style for non m cars. Any one know if I can raise the battery housing or move it. I am concerned now that I have the weight of the muffler gone from the right side that the battery weight may cause an issue. Any thoughts?

[nike001]

I don't like. Mainly because it never looks 100%. Also I think it creates too much symmetry

That being said, our exhausts are dual till the muffler anyways..


Sent from my iPhone using Tapatalk

[Hermes]

Nobody would think you're copying an M3 unless you put an ///M badge on the car.

hahaha... while I was in Israel I saw a pre-facelift E46 vert with louvers, M3 front bumper, M3 hood, M3 badging and the exhaust I posted in the first pic. I didn't realize he was posing until he drove by and I saw the rear bumper, for some reason I didn't notice the stock quarterpanels

[tripod06]

so i've been poking around and there is a way to get it done with out work to the trunk/spare insert. this guy i found on E46F did it quite beautifully and i believe that i will be hittin up his shop to see if this can also get done on mine.

http://www.e46fanatics.com/forum/showthread.php?t=665561

here is a picture that i stumbled across as well for an exhaust system.

http://img.photobucket.com/albums/v311/surfingtoys/QUAD-exhaust.jpg

[UdubBadger]

^ money.

what diffuser you gonna get for it?

[Johal E32]

so i've been poking around and there is a way to get it done with out work to the trunk/spare insert. this guy i found on E46F did it quite beautifully and i believe that i will be hittin up his shop to see if this can also get done on mine.

http://www.e46fanatics.com/forum/showthread.php?t=665561

here is a picture that i stumbled across as well for an exhaust system.

http://img.photobucket.com/albums/v311/surfingtoys/QUAD-exhaust.jpg

:drool, that's the best setup, by far

[az3579]

:drool, that's the best setup, by far

It's always easy if you don't want mufflers.


Sent from my iPhone 4S from Tapatalk

[Johal E32]

It's always easy if you don't want mufflers.


Sent from my iPhone 4S from Tapatalk

true, I doubt I could DD a really loud car... I only like a nice loud grumble when I either accelerate or am at WOT getting on the freeway. Other than that, I like my exhaust quiet.

[M0nk3y]

I'm always a fan of dual. Do it.

[WOLFN8TR]

I like it personally... M3 exhaust is more centered anyway. Nobody would think you're copying an M3 unless you put an ///M badge on the car.

It's funny you mention that. When I bought my ZHP it had a M3 badge where the 330 use to be. Unfortunately he didn't do the fake M3 exhaust also, oh well.

[UdubBadger]

:rofl

[tripod06]

did anyone read the link i posted about the M3 exhaust conversion WITHOUT having to cut the spare tire trunk?

[SureShot434]

so i've been poking around and there is a way to get it done with out work to the trunk/spare insert. this guy i found on E46F did it quite beautifully and i believe that i will be hittin up his shop to see if this can also get done on mine.

http://www.e46fanatics.com/forum/showthread.php?t=665561

here is a picture that i stumbled across as well for an exhaust system.

http://img.photobucket.com/albums/v311/surfingtoys/QUAD-exhaust.jpg

What size tubing is that??

I may have to do this...i would love to actually hear what it sounds like though?

I have a rattle in my exhaust and so it needs to be replaced...plus I love the look of the daul exhaust.

I've had the rattle for a little while now...BMW has looked at it and they can't figure out what is causing the rattle but it is in my exhaust.

[Brian N]

I agree, such a joke they put this style exhaust when it's not a true dual. Seems people just want the look...

GruppeM exhaust for M3, still not a real dual
http://www.dtmpower.net/forum/attachments/bmw-parts-sale/34138d1180033282-e46-m3-gruppem-titanium-exhaust-exi0116.jpg

Yes clearly it's not a true dual. :rolleyes

http://i253.photobucket.com/albums/hh54/sc_tr0jan_m3/RimsTires025.jpg

OEM E46 M3 exhaust is also a true dual.. and the reason why they maybe have opted for the quad tips are as follows. Yes even though in the end with an inline engine duals don't really cause any benefit.

"To improve the gas flow, gas column
oscillations of broad amplitude
are necessary, whereas, the silencing
requires the smoothing out of
these vibration in the exhaust flow to
be as uniform as possible. The
M3’s rear silencer was therefore
mainly designed as an absorption
silencer, since this construction best
unites both requirements. Selection
of the silencer volume is coupled to
the swept volume (VSD=VHUB) and
the engine’s target values. For
effective silencing without loss of
performance, the facto “X” should
not be less than 12 times the swept
volume.
Only be means of a modification of
the floor pan specific to the M3
could a large-volume rear silencer
(40 dm3) be located across and
behind the differential at the rear of
the car."

From: http://www.m3resource.com/downloads/BMW_M3_Exhaust_System.pdf

Which is a good read by the way. :thumbsup

[johnrando]

Hi Brian. I see that's your first post. Welcome to the site! Please post in the introduction thread so we can all get to know you/you're car.

[danewilson77]

Yes clearly it's not a true dual. :rolleyes

http://i253.photobucket.com/albums/hh54/sc_tr0jan_m3/RimsTires025.jpg

OEM E46 M3 exhaust is also a true dual.. and the reason why they maybe have opted for the quad tips are as follows. Yes even though in the end with an inline engine duals don't really cause any benefit.

"To improve the gas flow, gas column
oscillations of broad amplitude
are necessary, whereas, the silencing
requires the smoothing out of
these vibration in the exhaust flow to
be as uniform as possible. The
M3’s rear silencer was therefore
mainly designed as an absorption
silencer, since this construction best
unites both requirements. Selection
of the silencer volume is coupled to
the swept volume (VSD=VHUB) and
the engine’s target values. For
effective silencing without loss of
performance, the facto “X” should
not be less than 12 times the swept
volume.
Only be means of a modification of
the floor pan specific to the M3
could a large-volume rear silencer
(40 dm3) be located across and
behind the differential at the rear of
the car."

From: http://www.m3resource.com/downloads/BMW_M3_Exhaust_System.pdf

Which is a good read by the way. :thumbsup

Yeah...no kidding. Welcome.

[Smolck]

i would love to actually hear what it sounds like though?


Here is a guy who did the exact same thing. A friend of mine has been in this car. He added headers and it is too much. But in this vid, not too bad.


http://www.youtube.com/watch?v=Le8aPf7ittA&feature=fvwrel

[derbo]

for some reason I dont like how far apart those exhausts sit.

I like the CSL style exhaust setup on a sedan. :X

http://img25.imageshack.us/img25/4242/img0019copy.jpg

http://img.photobucket.com/albums/v732/mybmwm3/IMG00080-20090410-1507.jpg


http://www.insideperformance.de/onlineshop/product_info.php/products_id/109

http://shop.mor-vision.de/product_info.php?cPath=65_60_82_90&products_id=192&osCsid=caad92e6661c624e954b3f6474a1be01

[cakM3]

for some reason I dont like how far apart those exhausts sit.

I like the CSL style exhaust setup on a sedan. :X

http://img25.imageshack.us/img25/4242/img0019copy.jpg

http://img.photobucket.com/albums/v732/mybmwm3/IMG00080-20090410-1507.jpg


http://www.insideperformance.de/onlineshop/product_info.php/products_id/109

http://shop.mor-vision.de/product_info.php?cPath=65_60_82_90&products_id=192&osCsid=caad92e6661c624e954b3f6474a1be01

Derek, I second this. The quads set up like this allow for a more aggressive look but you need the whole package to pull this off...something I would like to do only if I do a full S54 drive train swap (engine, tranny, drive shaft, and diff...)

[Sockethead]

I think quad looks bad ass on anything. If I could do it cheaply and still be relatively quiet, I do it to my car.

I almost wish the our X5 4.8is had the quads like the 4.4 instead of the big ovals

[MiniD]

Aside from the E46 M3, I don't care for the quad exhaust set ups (OEM or aftermarket). I've always thought the E39 M5 would have looked much better if it had the 540 Mtech rear end. I love the 540i Mtech/330i ZHP diffuser with the single side exhaust.

http://www.shailen-patel.com/540iM/110207/Resized/IMG_2412.JPG

[nike001]

Aside from the E46 M3, I don't care for the quad exhaust set ups (OEM or aftermarket). I've always thought the E39 M5 would have looked much better if it had the 540 Mtech rear end. I love the 540i Mtech/330i ZHP diffuser with the single side exhaust.



Same here. Although the e39 m5 needs the added aggressiveness to differentiate it a bit from other non-m 5ers.

I love the e39 M-tech though. I always though that e39 M-techs need a single exhaust pipe out the back, as dual tipped ones look out of place. But the e46 w/ m-tech need dual tips. Odd, right?

[BRGcoopahS]

Here is a guy who did the exact same thing. A friend of mine has been in this car. He added headers and it is too much. But in this vid, not too bad.


http://www.youtube.com/watch?v=Le8aPf7ittA&feature=fvwrel


I've seen his videos before. I actually think his car sounds incredible.

[Tnhl1989]

What size tubing is that??

I may have to do this...i would love to actually hear what it sounds like though?

I have a rattle in my exhaust and so it needs to be replaced...plus I love the look of the daul exhaust.

I've had the rattle for a little while now...BMW has looked at it and they can't figure out what is causing the rattle but it is in my exhaust.

What rattling do you have? I have some kind of rattling in my car as well. Not sure what is it currently. It happens when I start and turn off the car.

[Torxuvin]

I love quads. That modded imola sedan is gorgeous.