Catless Downpipes with Stock Catback

Hellrot Sachin · 11-06-2011, 03:46 PM

I'm considering getting downpipes.. but I don't want to add too much to the overall loudness of the car. I wouldn't mind a bit more tone, but below 3k rpm (where most of my driving is anyhow), how much louder will it be?

Thanks,

HRS

taylors335 · 11-06-2011, 03:51 PM

YOUTUBE !!!!! pleanty of vids on there , im goin the same route sounds alot better !

jdbretz · 11-06-2011, 04:04 PM

It sounds good. Just a touch louder than stock under cruising conditions, and sounds great under WOT. Go for it, you won't regret it.

Brey335i · 11-06-2011, 04:13 PM

Barely louder than stock under normal driving. I had AR DP's and the golf tee mod (misfire free too

) and it was very civilized. Sounded amazing at WOT though

thebigragu99 · 11-06-2011, 04:42 PM

Quote:

Originally Posted by jdbretz

It sounds good. Just a touch louder than stock under cruising conditions, and sounds great under WOT. Go for it, you won't regret it.

+1 on this.It sounds great..

Tzu · 11-06-2011, 04:46 PM

Its quite tame. I enjoy it thoroughly.

Hellrot Sachin · 11-06-2011, 04:53 PM

Thanks everyone.. it's always hard to gauge how loud things are from online videos.. has anyone noticed an increased in vibrations with the AR DPs? I've read that AA DP go around some of this with OEM-like joints.

HRS

Focus · 11-06-2011, 05:20 PM

I just installed Macht Schnell Downpipes. 3in Downpipes , great quality. I have stock exhaust.

No real drone to me while cruising, sounds great when getting on it, louder outside car for sure.

I also did the golf tee ( unplugged the actuator from the trunk )

Keep in mind though, it does sound throatier in real life, i love the tone personally.
Here's a clip:

BoostAddict · 11-06-2011, 05:35 PM

My e90 is still quieter than a stock e92 exhaust. The only extra noise is you hear a bit more turbo spool.

Brey335i · 11-06-2011, 06:29 PM

Quote:

Originally Posted by ***********

My e90 is still quieter than a stock e92 exhaust. The only extra noise is you hear a bit more turbo spool.

Resonator in the e90. Not in the e92. Easily removed if you'd like some more sound.

BoostAddict · 11-06-2011, 06:33 PM

Quote:

Originally Posted by Brey335i

Resonator in the e90. Not in the e92. Easily removed if you'd like some more sound.

Yeah I know. My buddy and I welded up a muffler delete two months ago. Actually sounded really good and not raspy. I put the mufflers back on though. I'm not chopping up the stock exhaust again anytime soon. I'm just gonna buy an exhaust.

Bodie217 · 11-06-2011, 10:57 PM

pits200 · 11-06-2011, 11:03 PM

I have an e90 and just got my dps installed and the sound is great. To be ho est I feel my car isles better and has a smoother cruising sound with the catless dps. This is my dd and the wife would tell me if it was bad. Instead she just said, "ah it doesn't sound any different". That was a good thing to hear.

I smelled a little fuel smell at idle outside the car on a cold startup in 30 degree weather loving the mod so far.

plague · 11-06-2011, 11:08 PM

here is mine. stock catback

http://m.youtube.com/index?desktop_u...?v=5SaELfJYeXA

Brey335i · 11-06-2011, 11:46 PM

Quote:

Originally Posted by pits200

I have an e90 and just got my dps installed and the sound is great. To be ho est I feel my car isles better and has a smoother cruising sound with the catless dps. This is my dd and the wife would tell me if it was bad. Instead she just said, "ah it doesn't sound any different". That was a good thing to hear.

I smelled a little fuel smell at idle outside the car on a cold startup in 30 degree weather loving the mod so far.

It should only sound a little deeper and meaner around town so definitely a wife-friendly mod.

You'll be smelling fuel on startup, but it should go away once the secondary cats heat up

Mike@N54Tuning.com · 11-07-2011, 09:44 AM

This is the setup I run and love it. Deeper sound, but not much louder.

Mike

OfficialBOLO · 11-07-2011, 09:55 AM

hey, sorry for the newbish question, but any of you guys from NY with catless DP's but stock exhaust have issues passing emissions? or is it ok because of the secondary ones? thanks.

shock2314 · 11-07-2011, 11:24 AM

heres a clip of mine, i have AR cattless downpipes,secondary cats removed on stock exhaust,AA blowoff valve,AA fmic,Stage 2 Giac flash

335iLondon · 11-07-2011, 12:14 PM

Cheers for all the videos!

Primary catts off and secondary's inplace makes the best sound to my ears.

ModBargains IV · 11-07-2011, 01:15 PM

Catless downpipes with the stock exhaust actually sounds really good. Kind of louder than the performance exhaust.

SeanS54 · 11-07-2011, 07:33 PM

barely noticeable... do it!

11-06-2011, 03:46 PM	#1
Hellrot Sachin First Lieutenant 42 Rep 344 Posts Drives: TiAg E90 335i Join Date: Dec 2010 Location: Dallas iTrader: (3)	Catless Downpipes with Stock Catback - how loud? I'm considering getting downpipes.. but I don't want to add too much to the overall loudness of the car. I wouldn't mind a bit more tone, but below 3k rpm (where most of my driving is anyhow), how much louder will it be? Thanks, HRS
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11-06-2011, 03:51 PM	#2
taylors335 Major 26 Rep 1,183 Posts Drives: Space Grey 08 335i Join Date: Jan 2010 Location: san diego iTrader: (1) Garage List 2008 335i [7.00]	YOUTUBE !!!!! pleanty of vids on there , im goin the same route sounds alot better !
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11-06-2011, 04:04 PM	#3
jdbretz Captain 51 Rep 923 Posts Drives: '18 X5d, '12 M3 ZCP, '12 F30 Join Date: Dec 2010 Location: FL Panhandle iTrader: (10)	It sounds good. Just a touch louder than stock under cruising conditions, and sounds great under WOT. Go for it, you won't regret it.
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11-06-2011, 04:13 PM	#4
Brey335i Banned 112 Rep 4,771 Posts Drives: e46 ///M3 Join Date: Oct 2009 Location: Austin, TX iTrader: (11)	Barely louder than stock under normal driving. I had AR DP's and the golf tee mod (misfire free too ) and it was very civilized. Sounded amazing at WOT though
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11-06-2011, 04:46 PM	#6
Tzu Lieutenant Colonel 29 Rep 1,551 Posts Drives: 335i Join Date: Jun 2010 Location: Toronto iTrader: (1)	Its quite tame. I enjoy it thoroughly.
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11-06-2011, 04:53 PM	#7
Hellrot Sachin First Lieutenant 42 Rep 344 Posts Drives: TiAg E90 335i Join Date: Dec 2010 Location: Dallas iTrader: (3)	Thanks everyone.. it's always hard to gauge how loud things are from online videos.. has anyone noticed an increased in vibrations with the AR DPs? I've read that AA DP go around some of this with OEM-like joints. HRS
	Appreciate 0 Quote

11-06-2011, 05:20 PM	#8
Focus Captain 68 Rep 942 Posts Drives: N/A Join Date: Apr 2010 Location: Jersey iTrader: (2)	I just installed Macht Schnell Downpipes. 3in Downpipes , great quality. I have stock exhaust. No real drone to me while cruising, sounds great when getting on it, louder outside car for sure. I also did the golf tee ( unplugged the actuator from the trunk ) Keep in mind though, it does sound throatier in real life, i love the tone personally. Here's a clip: __________________
	Appreciate 0 Quote

11-06-2011, 05:35 PM	#9
BoostAddict Banned 48 Rep 932 Posts Drives: SGM 335i Join Date: Jan 2010 Location: Boynton Beach, FL iTrader: (4)	My e90 is still quieter than a stock e92 exhaust. The only extra noise is you hear a bit more turbo spool.
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11-06-2011, 10:57 PM	#12
Bodie217 Second Lieutenant 92 Rep 252 Posts Drives: '10 135i, '14 WRX, '14 Sequoia Join Date: Dec 2008 Location: Denver, CO iTrader: (1)	__________________ -2010 BMW 135i - Titanium Silver - Procede v3/ETS 5" IC/AR Catless DP>N54mid>Berk Race/BMS OCC/VRSF Turbo Inlets & CP/SP rotors/Pagid RS29/APEX ARC8/Ohlins DFV/M3 Full Suspension and Bushings/Wavetrac LSD // 395rwhp/469rwtq on 91oct -2014 Toyota Sequoia Platinum - Overlander
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11-06-2011, 11:03 PM	#13
pits200 Colonel 547 Rep 2,590 Posts Drives: 09 335i X-Drive Black Sapphire Join Date: Mar 2010 Location: Pittsburgh iTrader: (1)	I have an e90 and just got my dps installed and the sound is great. To be ho est I feel my car isles better and has a smoother cruising sound with the catless dps. This is my dd and the wife would tell me if it was bad. Instead she just said, "ah it doesn't sound any different". That was a good thing to hear. I smelled a little fuel smell at idle outside the car on a cold startup in 30 degree weather loving the mod so far.
	Appreciate 0 Quote

11-06-2011, 11:08 PM	#14
plague Captain 40 Rep 957 Posts Drives: 335i sold :( / jb 20th AE Join Date: Mar 2011 Location: NJ iTrader: (2)	here is mine. stock catback http://m.youtube.com/index?desktop_u...?v=5SaELfJYeXA __________________ 07 335i- SOLD, and will be missed... Parts for sale- PWM meth kit, M steering wheel, M shift knob, perforated e brake handle
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11-07-2011, 09:44 AM	#16
Mike@N54Tuning.com Joint Chiefs of Staff 4918 Rep 115,980 Posts Drives: 2007 335i, 2015 M3 Join Date: Dec 2008 Location: N54tuning.com iTrader: (89)	This is the setup I run and love it. Deeper sound, but not much louder. Mike
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11-07-2011, 09:55 AM	#17
OfficialBOLO Captain 37 Rep 735 Posts Drives: 2013 F30 335i X-Drive MSport Join Date: Sep 2010 Location: Brooklyn iTrader: (3) Garage List 2013 BMW 335i X-Drive [0.00]	hey, sorry for the newbish question, but any of you guys from NY with catless DP's but stock exhaust have issues passing emissions? or is it ok because of the secondary ones? thanks. __________________ 2013 F30 335i X-Drive / AW / CR / MSPORT / PREMIUM / TECH / HK / Heated Seats / Sport Auto / PDC / M Performance Grills and Spoiler / 20% tint (sold) 1995 Toyota Supra Single Turbo (for sale)
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11-07-2011, 11:24 AM	#18
shock2314 Lieutenant 52 Rep 529 Posts Drives: Brooklyn G80 m3 Join Date: Oct 2009 Location: DMV iTrader: (0)	heres a clip of mine, i have AR cattless downpipes,secondary cats removed on stock exhaust,AA blowoff valve,AA fmic,Stage 2 Giac flash __________________ RIP E46 M3 RIP E92 335i RIP F80 M3 Hello G80 M3
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11-07-2011, 12:14 PM	#19
335iLondon Captain 35 Rep 914 Posts Drives: 07' 335i Msport Join Date: Mar 2011 Location: London iTrader: (0)	Cheers for all the videos! Primary catts off and secondary's inplace makes the best sound to my ears.
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11-07-2011, 01:15 PM	#20
ModBargains IV Second Lieutenant 13 Rep 213 Posts Drives: e92 335i, 135i, E46 M3, 540i Join Date: Sep 2011 Location: 1721 E. Lambert Rd. Unit C, La Habra, CA 90631 iTrader: (1)	Catless downpipes with the stock exhaust actually sounds really good. Kind of louder than the performance exhaust.
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11-07-2011, 07:33 PM	#21
SeanS54 Captain 168 Rep 842 Posts Drives: F82 M4 ZCP Join Date: Jan 2011 Location: Bay Area, CA iTrader: (20)	barely noticeable... do it! __________________ https://www.youtube.com/user/SeanS54/videos
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