any performance gain w/ muffler swap?

jephs422 · 03-18-2012, 09:15 PM

I deleted my resonator last week and like the way it sounds, but I still want a little more grunt. I was going to swap the OEM mufflers for some Mahnaflow's, but will I see any performance gain? I don't want to make it louder just for the sake of making it louder. But it is still just a tad too quiet for my taste.

rader1 · 03-18-2012, 09:17 PM

You sir need downpipes...

Rotorocious · 03-18-2012, 09:22 PM

unnnnnlikely

jephs422 · 03-18-2012, 09:23 PM

LOL, I am really trying to avoid putting downpipes on...Those damn things are expensive!

Rotorocious · 03-18-2012, 09:34 PM

There's downpipes ranging from around $300 and up.
Just do it

Fred_Boosted · 03-18-2012, 09:41 PM

Axle back won't change anything except sound.

Muffler most for look.

jephs422 · 03-18-2012, 10:15 PM

I figured as much. I'll bite the bullet and just do a whole exhaust with downpipes. For now, I'll just leave what I have.

I'll do some searching on the forum for downpipe info.

Beemw335 · 03-18-2012, 10:19 PM

Vrsf downpipes and youre set!

08-335 · 03-19-2012, 09:51 AM

Just get a used set from this forum. I recently purchased a set of Agency Power downpipes for a very reasonable price and they work great. Yes they were a little banged up and used but to me downpipes are downpipes and having them is better than not having them.

Along with that I have a Cobb tune and the downpipes with the Cobb tune sounds really really nice.

Brey335i · 03-19-2012, 11:51 AM

Quote:

Originally Posted by Yo-Hi.Red.Devil

Jeph this only works for 325/328/330 not 335.

What?

Get the VRSF downpipes. They shouldn't be any more expensive than fabbing up Magnaflow mufflers and will sound way better. And they actually give you a performance gain.

jephs422 · 03-19-2012, 12:06 PM

Thanks guys, I'll look on the board for a used set. Figure if I run them along with with a new FMIC, maybe I can run the next map up on my JB4

jephs422 · 03-19-2012, 12:10 PM

Quote:

Originally Posted by Yo-Hi.Red.Devil

Jeph this only works for 325/328/330 not 335.

???

marv85 · 03-19-2012, 12:12 PM

Definitely DPs. I have AAs and really like them. VSRF seems to be making good ones for cheaper, I would have gone with those

oshusttoley · 03-19-2012, 12:37 PM

how much perfomance gain to you get from DP's? Right now my car that i recently bought came with bastuck axle back exhuast and just a drop in air filter....my first by with by CP w/ bov... then either cobb tune or DP or intakes? or would cobb tune be enough

skatenc123 · 03-19-2012, 12:48 PM

with downpipes you need a tune or CEL eliminator or youll get a CEL. I wouuld do cobb first then go from there.

jephs422 · 03-19-2012, 01:23 PM

JB4 will let me clear CEL right?

Jeff@TopGearSolutions · 03-19-2012, 01:24 PM

Quote:

Originally Posted by jephs422

JB4 will let me clear CEL right?

Correct

iBoost · 03-19-2012, 01:29 PM

the magnaflows will atleast save you almost 30lbs or so, our stock mufflers are heavy as hell. if youre going for a deeper, louder tone first try deleting second cats, youll love the sound trust me.

03-18-2012, 09:15 PM	#1
jephs422 Private First Class 7 Rep 104 Posts Drives: '08 335i E90 Join Date: Jan 2012 Location: Ojai Ca iTrader: (1)	any performance gain w/ muffler swap? I deleted my resonator last week and like the way it sounds, but I still want a little more grunt. I was going to swap the OEM mufflers for some Mahnaflow's, but will I see any performance gain? I don't want to make it louder just for the sake of making it louder. But it is still just a tad too quiet for my taste.
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03-18-2012, 09:17 PM	#2
rader1 Banned 70 Rep 2,197 Posts Drives: Cobb Stage 2+ 135i Join Date: Apr 2011 Location: Roanoke, VA iTrader: (0)	You sir need downpipes...
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03-18-2012, 09:22 PM	#3
Rotorocious Lieutenant Colonel 103 Rep 1,520 Posts Drives: 335xi Join Date: May 2010 Location: Colorado iTrader: (3)	unnnnnlikely
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03-18-2012, 09:23 PM	#4
jephs422 Private First Class 7 Rep 104 Posts Drives: '08 335i E90 Join Date: Jan 2012 Location: Ojai Ca iTrader: (1)	LOL, I am really trying to avoid putting downpipes on...Those damn things are expensive!
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03-18-2012, 09:34 PM	#5
Rotorocious Lieutenant Colonel 103 Rep 1,520 Posts Drives: 335xi Join Date: May 2010 Location: Colorado iTrader: (3)	There's downpipes ranging from around $300 and up. Just do it
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03-18-2012, 09:41 PM	#6
Fred_Boosted Captain 90 Rep 632 Posts Drives: 335i Join Date: Nov 2011 Location: USA iTrader: (1) Garage List 2010 BMW 335i [8.00]	Axle back won't change anything except sound. Muffler most for look.
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03-18-2012, 10:15 PM	#7
jephs422 Private First Class 7 Rep 104 Posts Drives: '08 335i E90 Join Date: Jan 2012 Location: Ojai Ca iTrader: (1)	I figured as much. I'll bite the bullet and just do a whole exhaust with downpipes. For now, I'll just leave what I have. I'll do some searching on the forum for downpipe info.
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03-18-2012, 10:19 PM	#8
Beemw335 Colonel 62 Rep 2,013 Posts Drives: 335i Join Date: Mar 2011 Location: My car is my home iTrader: (2)	Vrsf downpipes and youre set!
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03-19-2012, 09:51 AM	#9
08-335 Second Lieutenant 17 Rep 223 Posts Drives: 2015 BMW 335i xdrive Join Date: Nov 2011 Location: Chicago, IL iTrader: (0)	Just get a used set from this forum. I recently purchased a set of Agency Power downpipes for a very reasonable price and they work great. Yes they were a little banged up and used but to me downpipes are downpipes and having them is better than not having them. Along with that I have a Cobb tune and the downpipes with the Cobb tune sounds really really nice.
	Appreciate 0 Quote

03-19-2012, 12:06 PM	#11
jephs422 Private First Class 7 Rep 104 Posts Drives: '08 335i E90 Join Date: Jan 2012 Location: Ojai Ca iTrader: (1)	Thanks guys, I'll look on the board for a used set. Figure if I run them along with with a new FMIC, maybe I can run the next map up on my JB4
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03-19-2012, 12:12 PM	#13
marv85 Colonel 70 Rep 2,626 Posts Drives: '07 E92 335i MT Join Date: Jun 2010 Location: Bay Area iTrader: (7)	Definitely DPs. I have AAs and really like them. VSRF seems to be making good ones for cheaper, I would have gone with those __________________ '07 E92 335i 6MT- HP650, inlets/outlets, ER FMIC, VRSF CP, LPFP stg2, CSF rad, 'is Aux rad, ER OC, Ohlins, M control arms, eibach front sway bar. '05 C55 AMG SOLD - '22 Tesla M3P \| '10 E92 335i M, 6MT COBB, FBO, st2 LPFP, Mfactory LSD \| '07 E90 335i, PTF COBB E50, FBO, HFS4
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03-19-2012, 12:37 PM	#14
oshusttoley Captain 45 Rep 676 Posts Drives: 2008 335i sedan Join Date: Mar 2012 Location: New Jersey iTrader: (0)	how much perfomance gain to you get from DP's? Right now my car that i recently bought came with bastuck axle back exhuast and just a drop in air filter....my first by with by CP w/ bov... then either cobb tune or DP or intakes? or would cobb tune be enough
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03-19-2012, 12:48 PM	#15
skatenc123 Captain 11 Rep 645 Posts Drives: 2007 335i coupe Join Date: Jan 2012 Location: NC iTrader: (1)	with downpipes you need a tune or CEL eliminator or youll get a CEL. I wouuld do cobb first then go from there.
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03-19-2012, 01:23 PM	#16
jephs422 Private First Class 7 Rep 104 Posts Drives: '08 335i E90 Join Date: Jan 2012 Location: Ojai Ca iTrader: (1)	JB4 will let me clear CEL right?
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03-19-2012, 01:29 PM	#18
iBoost Retired e90post Member 135 Rep 3,038 Posts Drives: real slow Join Date: Nov 2009 Location: Las Vegas iTrader: (13)	the magnaflows will atleast save you almost 30lbs or so, our stock mufflers are heavy as hell. if youre going for a deeper, louder tone first try deleting second cats, youll love the sound trust me.
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