Downpipes w/ Stock Exhaust

stealth-twntrbo · 12-02-2014, 06:20 PM

Anyone have a video of a stock exhaust vs stock exhaust with downpipes?

Richy Rich · 12-02-2014, 06:44 PM

Don't have a video, but I only have catless downpipes and its a lot louder.

At WOT it reminds me of my Akra GT4 on my e92.

///M ARMY · 12-02-2014, 06:50 PM

Sounds really good. A lot better than stock!

JDUni1 · 12-02-2014, 08:10 PM

Richy Rich · 12-02-2014, 08:48 PM

Forgot I do have a video: http://instagram.com/p/uPeUTmNImv/

hdekerme · 12-03-2014, 12:55 AM

Which brand downpipes do you have? It sounds very aggressive

Richy Rich · 12-03-2014, 02:45 AM

I have the ER catless.

MasterC17 · 12-03-2014, 06:12 AM

stealth-twntrbo · 12-03-2014, 08:11 AM

I think I am going to do downpipes and cut out the secondary cats, and weld in my own piping and dyno and see what that yields, and maybe add an axel back. I think that maybe the most cost effective while still yielding gains. Vs spending 3k + for a full catback.

MasterC17 · 12-03-2014, 08:17 AM

Quote:

Originally Posted by stealth-twntrbo

I think I am going to do downpipes and cut out the secondary cats, and weld in my own piping and dyno and see what that yields, and maybe add an axel back. I think that maybe the most cost effective while still yielding gains. Vs spending 3k + for a full catback.

That's what I was going to do but keep stock axel-back (no point in changing).

gogoevo · 12-03-2014, 11:09 AM

Those of you with DP's and stock exhaust - is there noticeable drone during highway speeds?

Richy Rich · 12-03-2014, 12:27 PM

Quote:

Originally Posted by stealth-twntrbo

I think I am going to do downpipes and cut out the secondary cats, and weld in my own piping and dyno and see what that yields, and maybe add an axel back. I think that maybe the most cost effective while still yielding gains. Vs spending 3k + for a full catback.

Yeah no point in the axel back, just keep the valves open if you're looking for louder.

MasterC17 · 12-03-2014, 12:49 PM

Quote:

Originally Posted by gogoevo

Those of you with DP's and stock exhaust - is there noticeable drone during highway speeds?

None.

TurboSid · 12-03-2014, 01:03 PM

i'll have a road comparison soon. Just waiting on my ER's to arrive.

stealth-twntrbo · 12-03-2014, 01:28 PM

Get Catless downpipes, cut out the secondary cats weld in straight pipe, and then get the TPG race exhaust axel back portion, that will be a loud exhaust. I bet that setup would yield with in 5 hp of any full downpipe back exhaust.

Richy Rich · 12-03-2014, 01:31 PM

Quote:

Originally Posted by stealth-twntrbo

Get Catless downpipes, cut out the secondary cats weld in straight pipe, and then get the TPG race exhaust axel back portion, that will be a loud exhaust. I bet that setup would yield with in 5 hp of any full downpipe back exhaust.

As much as I think they're amateur hour, that won't match what they've produced. They're using 3" piping, factory is 2.5. So their full system should out perform given those circumstances.

MWcoupe · 12-04-2014, 11:39 AM

Instagram ARDESIGNCO

ZimaMotorsports · 12-04-2014, 01:13 PM

Using our Zima DP's

StealYourFace · 12-05-2014, 10:56 AM

Quote:

Originally Posted by JDUni1

The m4 in white, with the lowered rear end and at that angle is the best I have seen the m4 look, I always prefer the look and stance of the sedan over the coupe but that looks incredible.

YMB_F80 · 12-05-2014, 08:29 PM

The sound difference is huge with downpipes, when the valves are open on M mode (i have er downpipes) it sounds so much better! Maybe ill make a video one day haha, oh and downshifting has a nasty pop haha!

nsandawd · 12-05-2014, 11:53 PM

Quote:

Originally Posted by StealYourFace

The m4 in white, with the lowered rear end and at that angle is the best I have seen the m4 look, I always prefer the look and stance of the sedan over the coupe but that looks incredible.

Thanks! That's my car actually. I need to get some better pics of it soon.

Niko ZV · 12-06-2014, 11:39 PM

Quote:

Originally Posted by Richy Rich

I have the ER catless.

No tune?

12-02-2014, 06:20 PM	#1
stealth-twntrbo Captain 139 Rep 717 Posts Drives: 2020 740xi Join Date: Jun 2009 Location: NA iTrader: (3)	Downpipes w/ Stock Exhaust Anyone have a video of a stock exhaust vs stock exhaust with downpipes?
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12-02-2014, 06:44 PM	#2
Richy Rich Colonel 3169 Rep 2,135 Posts Drives: F80 \| MKIV Supra \| Aventador S Join Date: Jan 2014 Location: Los Angeles iTrader: (0)	Don't have a video, but I only have catless downpipes and its a lot louder. At WOT it reminds me of my Akra GT4 on my e92. __________________ For Sale: 2017 740whp Frozen White M3 \| 5900 Miles [sold] 'GR3MLIN' - Satin Mineral Grey M3 Build Thread
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12-02-2014, 06:50 PM	#3
///M ARMY Brigadier General 1003 Rep 3,051 Posts Drives: F90 Join Date: Jul 2012 Location: Cali iTrader: (2)	Sounds really good. A lot better than stock! __________________ 2022 RAM TRX 2021 Ford Bronco 2022 BMW M3
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12-02-2014, 08:10 PM	#4
JDUni1 Lieutenant 76 Rep 521 Posts Drives: '15 M3, '12 135i (Sold) Join Date: Sep 2011 Location: Tucson, AZ iTrader: (0)	__________________ 2015 Alpine White ///M3 \| Sakhir Orange/Black Extended Merino Leather \| 6MT \| Lighting Package \| Harmon Kardon \| H&R Sport Springs (F32) \| iND Cosmetic Treatment \| M Performance Spoiler \| 19" HRE 301M Frozen Red\| Mode Carbon Trophy R1 Diffuser
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12-02-2014, 08:48 PM	#5
Richy Rich Colonel 3169 Rep 2,135 Posts Drives: F80 \| MKIV Supra \| Aventador S Join Date: Jan 2014 Location: Los Angeles iTrader: (0)	Forgot I do have a video: http://instagram.com/p/uPeUTmNImv/ __________________ For Sale: 2017 740whp Frozen White M3 \| 5900 Miles [sold] 'GR3MLIN' - Satin Mineral Grey M3 Build Thread
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12-03-2014, 12:55 AM	#6
hdekerme Private 27 Rep 81 Posts Drives: 2015 BMW M3 Join Date: Apr 2014 Location: Los Angeles iTrader: (0)	Which brand downpipes do you have? It sounds very aggressive
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12-03-2014, 02:45 AM	#7
Richy Rich Colonel 3169 Rep 2,135 Posts Drives: F80 \| MKIV Supra \| Aventador S Join Date: Jan 2014 Location: Los Angeles iTrader: (0)	I have the ER catless. __________________ For Sale: 2017 740whp Frozen White M3 \| 5900 Miles [sold] 'GR3MLIN' - Satin Mineral Grey M3 Build Thread
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12-03-2014, 06:12 AM	#8
MasterC17 Captain 329 Rep 984 Posts Drives: 2015 BMW M3 Join Date: Aug 2014 Location: Massachusetts iTrader: (3)	__________________ 2009 X5d \| 2007 E90 Track \| 2002 M3 Track \| 1991 535i Track
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12-03-2014, 08:11 AM	#9
stealth-twntrbo Captain 139 Rep 717 Posts Drives: 2020 740xi Join Date: Jun 2009 Location: NA iTrader: (3)	I think I am going to do downpipes and cut out the secondary cats, and weld in my own piping and dyno and see what that yields, and maybe add an axel back. I think that maybe the most cost effective while still yielding gains. Vs spending 3k + for a full catback.
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12-03-2014, 11:09 AM	#11
gogoevo Private First Class 42 Rep 198 Posts Drives: 2011 Porsche 997.2 TTS Join Date: Nov 2008 Location: South Dakota iTrader: (1)	Those of you with DP's and stock exhaust - is there noticeable drone during highway speeds?
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12-03-2014, 01:03 PM	#14
TurboSid Brigadier General 1112 Rep 3,262 Posts Drives: 2022 M4Cx BSM/FR Join Date: Apr 2008 Location: Florida iTrader: (4) Garage List 2008 335i [0.00]	i'll have a road comparison soon. Just waiting on my ER's to arrive. __________________ 2022 BSM/FR M4 Competition X-Drive 2017 MW/SO M4 ZCP [SOLD] • 2015 MW/SO M4 M-DCT FBO [SOLD] • 2011 AW/CR 335is DCT FBO [SOLD] • 2008 AW/CR 335i 6MT FBO [SOLD]
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12-03-2014, 01:28 PM	#15
stealth-twntrbo Captain 139 Rep 717 Posts Drives: 2020 740xi Join Date: Jun 2009 Location: NA iTrader: (3)	Get Catless downpipes, cut out the secondary cats weld in straight pipe, and then get the TPG race exhaust axel back portion, that will be a loud exhaust. I bet that setup would yield with in 5 hp of any full downpipe back exhaust.
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12-04-2014, 11:39 AM	#17
MWcoupe 24k GOLD 148 Rep 1,453 Posts Drives: Mineral White M4 Join Date: Jul 2006 Location: BROOKLYN NY iTrader: (0)	Instagram ARDESIGNCO
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12-04-2014, 01:13 PM	#18
ZimaMotorsports 20 Rep 124 Posts Drives: F82 M4 Join Date: Sep 2014 Location: Chicago iTrader: (1)	Using our Zima DP's Last edited by ZimaMotorsports; 12-04-2014 at 01:20 PM..
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12-05-2014, 08:29 PM	#20
YMB_F80 Lieutenant Colonel 445 Rep 1,529 Posts Drives: YMB F80 M3 Join Date: Feb 2012 Location: Socal/ SGV 626 iTrader: (4) Garage List 2009 335i [7.00] 2015 BMW M3 [10.00]	The sound difference is huge with downpipes, when the valves are open on M mode (i have er downpipes) it sounds so much better! Maybe ill make a video one day haha, oh and downshifting has a nasty pop haha! __________________ 2015 BMW M3 (Yas Marina Blue)\| Toyo Tires \| Moton Suspension \| Instagram: YMB_F80
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