About how loud are catless downpipes?

Dark_Knight_335 · 03-08-2012, 08:55 PM

On an N55? I'm not looking for ricer drone fartpipe loud or Peterbilt diesel loud, just a little louder and throatier than stock.
Something tells me I should stick with my stock exhaust..

eyim1988 · 03-08-2012, 09:09 PM

downpipe/stock exhaust is your best bet.

#Tee · 03-08-2012, 09:14 PM

should wait for yodaime's response...he goes thru more exhaust than i do underwear. but then again hes pretty young so his flavor of "good/bad ass/ultimate ftw the SON exhaust" should be taken lightly. they love the loud stuff yano lol.

sA x sKy · 03-08-2012, 10:10 PM

DP + stock isn't too loud at all. It's 100% liveable.

marcvtec · 03-08-2012, 10:13 PM

DP stock exhaust = zero drone and just a little louder when you give it, its nice and I love it

BMW_SA · 03-08-2012, 10:25 PM

For reference...

BMS 3.5" catless with stock cat back

Dark_Knight_335 · 03-08-2012, 11:02 PM

Thanks to everyone. I'll ask about downpipes + stock. Didn't know that was an option.

wanderlei1 · 03-08-2012, 11:06 PM

Hey guys, how about with the performance exhaust? Will there be drone or will sound good still? I ask because I just installed the pe exhaust and love it.

sA x sKy · 03-08-2012, 11:22 PM

Quote:

Originally Posted by wanderlei1

Hey guys, how about with the performance exhaust? Will there be drone or will sound good still? I ask because I just installed the pe exhaust and love it.

It'll sound really good from what I've seen on videos. I'm not sure of anyone who has both the PE + DP though in the NY area though so you could hear in person..

badblkX6 · 03-08-2012, 11:33 PM

CJ421 has the PE exhaust with the AR catless downpipe and it sounds amazing. We live in the Philly area.

I have the stock exhaust with BMS downpipe and it sounds real good I think. If I were to get an exhaust it would be the PE exhaust.

Good luck!

Dark_Knight_335 · 03-08-2012, 11:39 PM

Any significant gains?

Sam335ix · 03-09-2012, 07:24 AM

Since I have the xi which comes with two cats and I with the catless dps how bad is the smell? Wouldn't the second cat prevent the smell?

Dark_Knight_335 · 03-09-2012, 08:28 AM

Quote:

Originally Posted by Sam335ix

Since I have the xi which comes with two cats and I with the catless dps how bad is the smell? Wouldn't the second cat prevent the smell?

I hear yes, marginally. It already stinks more than my 328 out of the box

CJ421 · 03-09-2012, 10:10 AM

There's a meet coming up in the PA/NJ area - consider going to that, there will be a variety of different setups:
http://www.e90post.com/forums/calend...-18&e=2252&c=4

Stock exhaust + DP is a popular combo as noted, zero drone, and it has an acceptable noise level. People won't be looking at you unless you're really on the gas.

Dark_Knight_335 · 03-09-2012, 10:13 AM

Quote:

Originally Posted by CJ421

There's a meet coming up in the PA/NJ area - consider going to that, there will be a variety of different setups:
http://www.e90post.com/forums/calend...e=2252&c=4

Stock exhaust + DP is a popular combo as noted, zero drone, and it has an acceptable noise level. People won't be looking at you unless you're really on the gas.

Great idea- ill see if I can make it up there. Thanks!

fishbone0701 · 03-09-2012, 10:43 AM

On a similar note, I'm looking at putting a AR catless dp on mine with a stock exhaust. I'm wtg on Cobb so I don't have a tune yet. Can anyone tell me if the drivability of the car changes if I get a CEL? Sorry if it's been answered before. I tried "searching" for it.

fallintotherhyme · 03-09-2012, 02:07 PM

I run stock exhaust with dp and it's on the quiet side if you're looking for sound. Cut your secondary cats and you'll have one sweet sounding monster.

mrj25 · 03-09-2012, 02:45 PM

AR or Berk catless dp, both sound and perform the same. Here's my setup as I have the Berk catless dp and HKS Legamax catback exhaust.

Dark_Knight_335 · 03-09-2012, 04:38 PM

Wow, thinking I'll pass on the DPs until I hear it in person. Anyone in the Central Nj area wanna meet up one weeknight?

sA x sKy · 03-09-2012, 06:13 PM

Quote:

Originally Posted by SDeFranco1

Wow, thinking I'll pass on the DPs until I hear it in person. Anyone in the Central Nj area wanna meet up one weeknight?

If you're willing to come down to LI, I don't mind give you a ride in my car..but I have an exhaust so that changes sound quite a bit..

Dark_Knight_335 · 03-09-2012, 06:48 PM

LI is a bit of a hike for me but I appreciate it bro- AutoCouture is actually going to have a car with DPs in next week for me to check out, Alex just told me!

03-08-2012, 08:55 PM	#1
Dark_Knight_335 Came to the N55 Darkside 1131 Rep 12,740 Posts Drives: 2011 335 E93 M-Sport Join Date: May 2010 Location: NY/NJ iTrader: (28)	About how loud are catless downpipes? On an N55? I'm not looking for ricer drone fartpipe loud or Peterbilt diesel loud, just a little louder and throatier than stock. Something tells me I should stick with my stock exhaust..
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03-08-2012, 09:09 PM	#2
eyim1988 Lieutenant Colonel 103 Rep 1,647 Posts Drives: 2022 BMW M4 Join Date: Feb 2011 Location: Los Angeles, CA iTrader: (5) Garage List 2022 M4 [0.00]	downpipe/stock exhaust is your best bet.
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03-08-2012, 09:14 PM	#3
#Tee Major General 564 Rep 5,366 Posts Drives: yes Join Date: Oct 2011 Location: Socal iTrader: (2)	should wait for yodaime's response...he goes thru more exhaust than i do underwear. but then again hes pretty young so his flavor of "good/bad ass/ultimate ftw the SON exhaust" should be taken lightly. they love the loud stuff yano lol. __________________ You can follow my builds on IG: Tee212
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03-08-2012, 10:10 PM	#4
sA x sKy Sameet 748 Rep 2,541 Posts Drives: AY/B M4 '15 Join Date: Apr 2010 Location: Long Island, New York iTrader: (3) Garage List 2015 BMW M4 [0.00]	DP + stock isn't too loud at all. It's 100% liveable.
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03-08-2012, 10:13 PM	#5
marcvtec Banned 410 Rep 2,703 Posts Drives: M5 Join Date: Oct 2006 Location: toronto iTrader: (0)	DP stock exhaust = zero drone and just a little louder when you give it, its nice and I love it
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03-08-2012, 10:25 PM	#6
BMW_SA Free Hearing Tests 2 Rep 137 Posts Drives: '13 E92 M3 Join Date: Nov 2011 Location: Portland, OR iTrader: (1)	For reference... BMS 3.5" catless with stock cat back __________________ Current - '13 E92 M3 - Space Grey on Fox Red Retired - '11 E90 335i (370WHP/443FT/Lbs) - Le Mans Blue on Saddle Brown
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03-08-2012, 11:02 PM	#7
Dark_Knight_335 Came to the N55 Darkside 1131 Rep 12,740 Posts Drives: 2011 335 E93 M-Sport Join Date: May 2010 Location: NY/NJ iTrader: (28)	Thanks to everyone. I'll ask about downpipes + stock. Didn't know that was an option.
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03-08-2012, 11:06 PM	#8
wanderlei1 Second Lieutenant 13 Rep 224 Posts Drives: 2009 lemans msport e92 coupe Join Date: Mar 2011 Location: long island, nassau county iTrader: (3)	How about? Hey guys, how about with the performance exhaust? Will there be drone or will sound good still? I ask because I just installed the pe exhaust and love it.
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03-08-2012, 11:33 PM	#10
badblkX6 Captain 65 Rep 772 Posts Drives: 2014 X6 35i Join Date: Sep 2011 Location: South Jersey iTrader: (9)	CJ421 has the PE exhaust with the AR catless downpipe and it sounds amazing. We live in the Philly area. I have the stock exhaust with BMS downpipe and it sounds real good I think. If I were to get an exhaust it would be the PE exhaust. Good luck!
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03-08-2012, 11:39 PM	#11
Dark_Knight_335 Came to the N55 Darkside 1131 Rep 12,740 Posts Drives: 2011 335 E93 M-Sport Join Date: May 2010 Location: NY/NJ iTrader: (28)	Any significant gains?
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03-09-2012, 07:24 AM	#12
Sam335ix Major 75 Rep 1,274 Posts Drives: 335 ix performance edition Join Date: Sep 2011 Location: Redskin Country iTrader: (0)	Since I have the xi which comes with two cats and I with the catless dps how bad is the smell? Wouldn't the second cat prevent the smell? __________________ 2011 e90 KW V1, JB4, BMS Dp, BMS Intake, CP, Alpina Flash, ISO, E85 Coming soon to the garage: 2014 M3 Maybe M5
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03-09-2012, 10:10 AM	#14
CJ421 Brigadier General 1895 Rep 4,198 Posts Drives: BMW G80 M3 Join Date: Feb 2011 Location: PA, USA iTrader: (1) Garage List 2024 BMW M3 Sedan [9.67]	There's a meet coming up in the PA/NJ area - consider going to that, there will be a variety of different setups: http://www.e90post.com/forums/calend...-18&e=2252&c=4 Stock exhaust + DP is a popular combo as noted, zero drone, and it has an acceptable noise level. People won't be looking at you unless you're really on the gas. __________________ 2024 BMW M3 Sedan Frozen Pure Grey II/Fjord Blue, 6MT Past: 2021 Z4 M40i Frozen Grey II/Black Alcantara \| 2017 F30 340i Mineral Gray/Coral Red, 6MT \| 2011 E92 335i Le Mans Blue/Black, 6MT
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03-09-2012, 10:43 AM	#16
fishbone0701 Private 17 Rep 81 Posts Drives: 2016 M3 Join Date: Jan 2012 Location: Colorado Springs, CO iTrader: (2)	On a similar note, I'm looking at putting a AR catless dp on mine with a stock exhaust. I'm wtg on Cobb so I don't have a tune yet. Can anyone tell me if the drivability of the car changes if I get a CEL? Sorry if it's been answered before. I tried "searching" for it.
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03-09-2012, 02:07 PM	#17
fallintotherhyme First Lieutenant 9 Rep 349 Posts Drives: M316 xi Join Date: Jul 2011 Location: NY iTrader: (0)	I run stock exhaust with dp and it's on the quiet side if you're looking for sound. Cut your secondary cats and you'll have one sweet sounding monster.
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03-09-2012, 02:45 PM	#18
mrj25 Colonel 201 Rep 2,163 Posts Drives: 2011 335i E90 LCI Join Date: Dec 2010 Location: OC-LA, CALI iTrader: (21)	AR or Berk catless dp, both sound and perform the same. Here's my setup as I have the Berk catless dp and HKS Legamax catback exhaust.
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03-09-2012, 04:38 PM	#19
Dark_Knight_335 Came to the N55 Darkside 1131 Rep 12,740 Posts Drives: 2011 335 E93 M-Sport Join Date: May 2010 Location: NY/NJ iTrader: (28)	Wow, thinking I'll pass on the DPs until I hear it in person. Anyone in the Central Nj area wanna meet up one weeknight?
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03-09-2012, 06:48 PM	#21
Dark_Knight_335 Came to the N55 Darkside 1131 Rep 12,740 Posts Drives: 2011 335 E93 M-Sport Join Date: May 2010 Location: NY/NJ iTrader: (28)	LI is a bit of a hike for me but I appreciate it bro- AutoCouture is actually going to have a car with DPs in next week for me to check out, Alex just told me!
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