Anyone going to try a full straight pipe exhaust system?

GhostyM · 03-02-2008, 01:39 AM

.

Mattscott · 03-02-2008, 01:56 AM

DO it, just take a lot of pics and sound clips and dynos

eshtog · 03-02-2008, 05:07 AM

I did that on my WRX, it shot fire.

BB · 03-02-2008, 05:37 AM

hotrod2448 · 03-02-2008, 08:15 AM

It will sound terrible. There are a few people on here that have tried it with some type of small straight through muffler but, the car ends ups sounding like a weed wacker.

hotrod2448 · 03-02-2008, 08:48 AM

My Evo would blow fireballs out of the too. It had an oval shaped straight through muffler as well. So, it doesn't necessarily have to be straight pipe to do it, just no cats.

evorobert · 03-02-2008, 02:26 PM

I will be running no cats as soon as my RennArt ships their exhaust, their exhaust eliminates the secondary cats and has no resonators, (however they do offer resonated exhausts as well) and since i'll have the UR catless downpipes i'll be catless.

i'm not worried about sound since i had an evo with no cat.

hotrod2448 · 03-02-2008, 04:18 PM

Quote:

Originally Posted by evorobert

I will be running no cats as soon as my RennArt ships their exhaust, their exhaust eliminates the secondary cats and has no resonators, (however they do offer resonated exhausts as well) and since i'll have the UR catless downpipes i'll be catless.

i'm not worried about sound since i had an evo with no cat.

I had an Evo with no cat and it sounded way better than a 335 with none and most aftermarket exhausts. I forget the screen name but one guy on here has been through like 10 exhausts and with no cats or resonators and an Eisenmann back section it sounded terrible.

Dan335i · 03-02-2008, 06:41 PM

Believe it or not even a turbo car needs a little back pressure in the exhaust.Thats if its a street driven car.

hotrod2448 · 03-02-2008, 06:50 PM

Quote:

Originally Posted by Dan335i

Believe it or not even a turbo car needs a little back pressure in the exhaust.Thats if its a street driven car.

Negative. The turbo provides all the back pressure you need. After it if you could just dump the exhaust right out of the turbo would be just about ideal.

down4it · 03-02-2008, 07:04 PM

I run catless with a full 2.5" exhaust to Borla XR-1 racing mufflers, they are straight thru design... Its sounds amazing and only really smells when the motor is cold...

Mr. Furley · 03-03-2008, 12:56 AM

Shouldn't it be 3" all the way back?

wj4 · 03-03-2008, 12:58 AM

Quote:

Originally Posted by Mr. Furley

Shouldn't it be 3" all the way back?

Doesn't fit the 335i like other cars, a la Evos and STis. (Granted the 05+ Evos can't run a full 3 inch downpipe due to ACD bar).

And like others have stated, it's been done before. All you need are catless downpipes and catback system.

evoalex · 03-03-2008, 01:53 AM

like most people in this thread, i ran 3" from the downpipe out in my evo... it is new news to me though that the 335 can only accommodate 2.5" pipes, but this raises a new question...what would be the best performance/sound exhaust out there though?

M3EST · 03-03-2008, 02:20 AM

The one that will do it on a 335 will have lots of fun but only for a litle time.Nobody pays a bmw to scream like a tiger and go for a nice ride.Apart from this would be interesting to hear.

GhostyM · 03-03-2008, 02:24 AM

Personally, a loud BMW is not new.

Look at all these E46 M3's with Eisenmann Race exhausts. I mean seriously if someone were to do 2.5 all the way, it wouldn't be much different from the M3's. I mean the comfort level might drop but you gain the sound of the car.

I am sure it will sound godly.

hotrod2448 · 03-03-2008, 09:10 AM

Quote:

Originally Posted by Vegasboy301

like most people in this thread, i ran 3" from the downpipe out in my evo... it is new news to me though that the 335 can only accommodate 2.5" pipes, but this raises a new question...what would be the best performance/sound exhaust out there though?

Yeah but it's 2.5" times two. So it's essentially like running a 5" exhaust on an Evo. I think that should be enough for most of us.

335i4u2nv · 04-14-2008, 09:34 AM

2.5 per 3 cylinders. im goin to try this with a H pipe no cats and resonators anywhere. none in exhaust or DP's... just straight though... ill try and post a vid.

Mr. 5 · 04-14-2008, 09:40 AM

This will work but it will sound like ass.
Hope you like it.

Max@Logic · 04-14-2008, 01:06 PM

agreed, the sound is awful.

03-02-2008, 01:39 AM	#1
GhostyM Major 539 Rep 1,463 Posts Drives: plenty Join Date: Mar 2007 Location: US iTrader: (0)	. . Last edited by GhostyM; 10-24-2019 at 12:57 AM..
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03-02-2008, 01:56 AM	#2
Mattscott Major General 108 Rep 8,327 Posts Drives: 2007 335i E90 Join Date: Aug 2007 Location: Beaumont, CA iTrader: (2)	DO it, just take a lot of pics and sound clips and dynos __________________ Legal Disclaimer: Anything I or anyone else says about my vehicle on this website(e90post.com or any affiliated or nonaffiliated sites), pertaining to modifications, is only to gain acceptance from my/our peers, and does not actually represent anything actually existing on my car, and thus, cannot be held against me in any issues, i.e. warranty claims, that may arise.
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03-02-2008, 05:07 AM	#3
eshtog Lieutenant 21 Rep 441 Posts Drives: 2002 E39 M5 Join Date: Aug 2005 Location: Portland, Oregon iTrader: (4)	I did that on my WRX, it shot fire.
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03-02-2008, 05:37 AM	#4
BB n00b 4 Rep 138 Posts Drives: 2008 335i Coupe Join Date: Jan 2008 Location: Seattle, WA iTrader: (0)	__________________ word.
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03-02-2008, 08:15 AM	#5
hotrod2448 grand poobah 254 Rep 2,253 Posts Drives: F80 M3, F10 535i Join Date: Dec 2006 Location: Charlotte, NC iTrader: (0) Garage List 2011 335d [0.00]	It will sound terrible. There are a few people on here that have tried it with some type of small straight through muffler but, the car ends ups sounding like a weed wacker.
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03-02-2008, 08:48 AM	#6
hotrod2448 grand poobah 254 Rep 2,253 Posts Drives: F80 M3, F10 535i Join Date: Dec 2006 Location: Charlotte, NC iTrader: (0) Garage List 2011 335d [0.00]	My Evo would blow fireballs out of the too. It had an oval shaped straight through muffler as well. So, it doesn't necessarily have to be straight pipe to do it, just no cats.
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03-02-2008, 02:26 PM	#7
evorobert Private 0 Rep 98 Posts Drives: 08 335i coupe Join Date: Dec 2007 Location: So Cal iTrader: (2)	I will be running no cats as soon as my RennArt ships their exhaust, their exhaust eliminates the secondary cats and has no resonators, (however they do offer resonated exhausts as well) and since i'll have the UR catless downpipes i'll be catless. i'm not worried about sound since i had an evo with no cat. __________________ *2008 E92 6MT, Montego Blue*
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03-02-2008, 06:41 PM	#9
Dan335i Lieutenant Colonel 32 Rep 1,786 Posts Drives: 07 335i coupe 6MT,w/sp. pack. Join Date: Oct 2007 Location: orange county NY iTrader: (2)	Believe it or not even a turbo car needs a little back pressure in the exhaust.Thats if its a street driven car.
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03-02-2008, 07:04 PM	#11
down4it Banned 63 Rep 1,743 Posts Drives: E92 335i Join Date: Jul 2007 Location: SoCal iTrader: (3)	I run catless with a full 2.5" exhaust to Borla XR-1 racing mufflers, they are straight thru design... Its sounds amazing and only really smells when the motor is cold...
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03-03-2008, 12:56 AM	#12
Mr. Furley Enlisted Member 9 Rep 40 Posts Drives: Daily - Legacy Join Date: Sep 2007 Location: Wa iTrader: (0)	Shouldn't it be 3" all the way back? __________________ ROGUE MOTORSPORTS O.I.F. / O.E.F. Veteran LA Lakers
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03-03-2008, 01:53 AM	#14
evoalex Private First Class 63 Rep 198 Posts Drives: '08 135i SOLD \| '07 335i SOLD Join Date: Aug 2007 Location: Los Angeles iTrader: (0)	like most people in this thread, i ran 3" from the downpipe out in my evo... it is new news to me though that the 335 can only accommodate 2.5" pipes, but this raises a new question...what would be the best performance/sound exhaust out there though? __________________ -Alex Photography portfolio -> AlexStone.co \| \| Instagram @evoalex
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03-03-2008, 02:20 AM	#15
M3EST Rear wheel drive fanatic 53 Rep 604 Posts Drives: M3 E30-1M-M4 Join Date: Nov 2006 Location: Greece & Germany iTrader: (1) Garage List 1987 BMW M3 [0.00] 2011 BMW 1M [10.00]	The one that will do it on a 335 will have lots of fun but only for a litle time.Nobody pays a bmw to scream like a tiger and go for a nice ride.Apart from this would be interesting to hear.
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03-03-2008, 02:24 AM	#16
GhostyM Major 539 Rep 1,463 Posts Drives: plenty Join Date: Mar 2007 Location: US iTrader: (0)	Personally, a loud BMW is not new. Look at all these E46 M3's with Eisenmann Race exhausts. I mean seriously if someone were to do 2.5 all the way, it wouldn't be much different from the M3's. I mean the comfort level might drop but you gain the sound of the car. I am sure it will sound godly.
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04-14-2008, 09:34 AM	#18
335i4u2nv Colonel 66 Rep 2,765 Posts Drives: 335i e9O sL0w Join Date: Apr 2007 Location: im right behind u iTrader: (0)	2.5 per 3 cylinders. im goin to try this with a H pipe no cats and resonators anywhere. none in exhaust or DP's... just straight though... ill try and post a vid. __________________ "dat ***** is doin like 2 bills." Translation: That black guy is doing 200 miles per hour
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04-14-2008, 09:40 AM	#19
Mr. 5 Modder Raider 753 Rep 8,633 Posts Drives: M3 Join Date: Apr 2007 Location: Surf City, HB iTrader: (31) Garage List 2007 e90 335i [8.00]	This will work but it will sound like ass. Hope you like it. __________________ e36 M3 Coupe, e36 325i Sedan e90 335i--SOLD Best 60-130-------------9.15 Seconds------------------WWW.MR5RACING.COM
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04-14-2008, 01:06 PM	#20
Max@Logic 7 Rep 426 Posts Drives: E55 AMG Join Date: Oct 2007 Location: Irvine iTrader: (3)	agreed, the sound is awful. __________________ Stock Mercedes Benz E55 AMG. 11.96@118.3mph
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