Exhaust Note - BMW 3-Series (E90 E92) Forum

elinstylez · 04-18-2012, 10:19 PM

Has anyone noticed a difference between the exhaust note for the x-drive versus the i models?

I just received a loaner e93 and noticed that the exhaust note is significantly louder and more aggressive sounding than my e92 xi; I'm not sure if it has standard PE.

I'm sure our secondary cats have to do a bit with it but it is a night and day difference!

RevC · 04-19-2012, 09:53 PM

Since when do we have secondary cats and the I doesnt? It's the same exhaust I vs xi except for the area around the transfer case?

reprod · 04-19-2012, 10:49 PM

My 2008 335xi was much louder than my 2011 335 x-drive. I had to disconnect the actuator to get to the second exhaust to permanently stay open to get any decent sound. If i decide to buy out the lease I will be going with the PE exhaust.

335_MI6 · 04-19-2012, 11:43 PM

I feel like my xi is louder an I, that's just me

VTECaddict · 04-20-2012, 01:08 AM

dang what dealer did you go to that has E93 335i loaners??

Chrisred · 04-20-2012, 07:53 AM

An i might actually be louder than an xi cause piping is different. I'm fully catless and my friend's fully catless is a bit louder. Now It's either the exhaust or piping difference. We both have ar dp's and I have AMS exhaust while he has AE. The xi ar dp are differently shaped from an i and they're not fully 3" like the i. At one point where they curve they're 2.5". Now is this the case or the exhaust??

elinstylez · 04-20-2012, 09:04 AM

Thanks for the feedback; I guess it must be a subjective thing. I did speak with my service adviser after the fact and he stated that some of the loaners do come standard with PE. Based on the much throatier sound of it, I'm fairly certain it has the PE. My xi sounds muted in comparison.

Quote:

Originally Posted by VTECaddict

dang what dealer did you go to that has E93 335i loaners??

New Century - I've had great service from there. They mentioned that once in awhile they have M3 loaners

elinstylez · 04-20-2012, 04:45 PM

Quote:

Originally Posted by RevC

Since when do we have secondary cats and the I doesnt? It's the same exhaust I vs xi except for the area around the transfer case?

I'm fairly new to the car, but according to what I've read our cars do have secondary cats, unfortunately. Not sure why...

mashimarho · 04-20-2012, 11:30 PM

I hear i is louder.

Bmw135er · 04-21-2012, 10:56 AM

The '11 is an N55. The don't have secondary cats, and the exhaust note is completely different.

Fredz · 06-19-2012, 11:45 PM

Quote:

Originally Posted by elinstylez

I'm fairly new to the car, but according to what I've read our cars do have secondary cats, unfortunately. Not sure why...

http://www.e90post.com/forums/showth...6#post12186556

elinstylez · 07-12-2012, 11:21 PM

Quote:

Originally Posted by Fredz

http://www.e90post.com/forums/showth...6#post12186556

Thanks for the link. That's pretty cool. You should see gains even if it is nominal - cats are pretty restrictive. I guess there are differences in sound with the i and the xi.. I want the PE exhaust but am not willing to pay $1200+ just for sound

04-18-2012, 10:19 PM	#1
elinstylez Private First Class Drives: N55 335xi e92 M-Sport 6MT Join Date: Feb 2012 Location: SoCal Posts: 107 iTrader: (1)	Exhaust Note Has anyone noticed a difference between the exhaust note for the x-drive versus the i models? I just received a loaner e93 and noticed that the exhaust note is significantly louder and more aggressive sounding than my e92 xi; I'm not sure if it has standard PE. I'm sure our secondary cats have to do a bit with it but it is a night and day difference!
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04-19-2012, 09:53 PM	#2
RevC Lieutenant General Drives: a couple fast toys Join Date: Jun 2009 Location: Voorhees+cherry hill,NJ Posts: 11,750 iTrader: (26)	Since when do we have secondary cats and the I doesnt? It's the same exhaust I vs xi except for the area around the transfer case? __________________ -Rev SGM e92 335xi\|Helix\|AFE\|AWE\|PROCEDE\|SYNAPSE\|ER\|OSS\|BMW PERFORMANCE\|P3\|always growing..

04-19-2012, 10:49 PM	#3
reprod Major Drives: 335xi Coupe (SG) Join Date: Apr 2008 Location: New York, NY Posts: 1,264 iTrader: (6)	My 2008 335xi was much louder than my 2011 335 x-drive. I had to disconnect the actuator to get to the second exhaust to permanently stay open to get any decent sound. If i decide to buy out the lease I will be going with the PE exhaust. __________________ '08 Sparkling Graph. E92 335xi (ZSP w/ 18s \| Saddle Br. w/ Grey Poplar \| Nav \| PDC \| Cold Weather) (Returned) '11 Space Grey E92 335i x-Drive M-Sport (KWv1 Coils \| Saddle Brown \| Bamboo \| NAV \| PDC \| Premium)

04-19-2012, 11:43 PM	#4
335_MI6 Colonel Drives: 335xi Join Date: May 2011 Location: DC/MIAMI/LONDON Posts: 2,000 iTrader: (1)	I feel like my xi is louder an I, that's just me __________________ Epacy2: "335=M3?" THE TECH: "Only 335 guys think so."

04-20-2012, 01:08 AM	#5
VTECaddict Where'd my VTEC go? Drives: 06 330i 6MT Join Date: Mar 2009 Location: Orange County, CA Posts: 4,035 iTrader: (3)	dang what dealer did you go to that has E93 335i loaners?? __________________ AW/Terra \| ZSP \| ZPP \| ZCW \| iDrive \| CA Mods: KW V2 \| OEM Blacklines \| M-tech rear \| custom dual exhaust \| M3 steering wheel \| BMW SSK \| ZHP shift knob \| BMW Performance rep spoiler Varrstoen ES1 19x9.5+20 Front, 19x11+25 rear

04-20-2012, 07:53 AM	#6
Chrisred Captain Drives: BMW 335xi coupe Join Date: Jan 2010 Location: Montreal, Canada Posts: 691 iTrader: (0)	An i might actually be louder than an xi cause piping is different. I'm fully catless and my friend's fully catless is a bit louder. Now It's either the exhaust or piping difference. We both have ar dp's and I have AMS exhaust while he has AE. The xi ar dp are differently shaped from an i and they're not fully 3" like the i. At one point where they curve they're 2.5". Now is this the case or the exhaust?? __________________ JB4 cp-e IC AMS exhaust BMS DCI AR DP's METH 19" VMR VB3 Stoptech BBK TC KLINE VORSHLAG

04-20-2012, 11:30 PM	#9
mashimarho Boss Drives: e92 LCI 335i xDrive™ Join Date: Mar 2010 Location: Grand Rapids, michigan Posts: 5,715 iTrader: (27) Garage List 2012 BMW 335i xDrive [5.00]	I hear i is louder. __________________ -Sean. 360 FORGED///DynamikiLLu51ions///ER///BMS///KW///VRSF///ARKYM///DD///CYBA///STOPTECH///BMW Performance /// My Progress: http://www.e90post.com/forums/showthread.php?t=770326

04-21-2012, 10:56 AM	#10
Bmw135er Major Drives: E90 M3 Join Date: May 2011 Location: Colorado Springs Posts: 1,375 iTrader: (9)	The '11 is an N55. The don't have secondary cats, and the exhaust note is completely different.

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