M4 Magnaflow Exhaust Prototype Sound Clips

dr2ray · 09-07-2014, 01:29 AM

Because several people asked, here are some sound clips from my Magnaflow prototype exhaust. To my knowledge, I'm one of only two of these floating around (the other is on a M3). There will be two different versions, normal and super-loud (competition). This is the normal one.
Caveats: 1. I'm not the most adept with the GoPro. 2. My neigborhood doesn't have a single street that isn't broken up by an old-fashion East Coast Roundabout, so full out acceleration is limited to one short clip. Hopefully this works on Youtube.
Cold start:

Short Acceleration:

parky1215 · 09-07-2014, 01:36 AM

It doesn't sound that much different from stock exhaust.

karbonphiber · 09-07-2014, 06:34 AM

what are your impressions? any in-cabin vids and pics of the system?

spool twice · 09-07-2014, 07:35 AM

I like it. it doesnt sound louder than stock, but it sounds more clear, less muffled, less tinny, more substantial. I could live with this noise/volume.

mic_crispy · 09-07-2014, 10:08 AM

Quote:

Originally Posted by spool twice

I like it. it doesnt sound louder than stock, but it sounds more clear, less muffled, less tinny, more substantial. I could live with this noise/volume.

That sounds like what a lot of people are wanting.

Fwiw I like it. If its around 1300 like thee9x version I'd pick it up. Is this from the 2nd cat back?

MaynardZed · 09-07-2014, 10:09 AM

Doesn't sound too bad for being cheaper alternative.

shortseller · 09-07-2014, 10:28 AM

Definitely better tone than OEM. Not bad if priced right. Hope to see and hear more in the coming months as this progresses to a final product. And I assume it's American made as well, yes?

qwickm3 · 09-07-2014, 11:01 AM

I like it and it will priced like a collection of steel tubes should be!

Maz335i · 09-07-2014, 11:13 AM

Not bad TBH. Curious to hear pricing.

dr2ray · 09-07-2014, 11:19 AM

Quote:

Originally Posted by spool twice

I like it. it doesnt sound louder than stock, but it sounds more clear, less muffled, less tinny, more substantial. I could live with this noise/volume.

This exactly. Not much louder but more rumble and grunt. The price should be about 1.5-2k, from what they said. Not sure what the competition one will run. Two cool things about this: 1. the tips are much bigger than OEM.
2. The resonator is much smaller so its not so visible from behind.

E92LNGCGY · 09-07-2014, 11:49 AM

Sounds pretty good. I think the price will be very reasonable too. Wonder how much louder the competition version would be.

AMPowerJ · 09-07-2014, 12:13 PM

I bet it will drone ...

I believe any exhaust, without the valves like the OEM exhaust has, will have some amount of drone. It is apparently pretty difficult to design an exhaust without drone and BMW worked hard on this. I had numerous exhausts for my E90/E92 M3s and the only one that flat out didn't drone at all was the OEM and the MPE.

MGWally · 09-07-2014, 12:22 PM

can you tell if it's using 3" piping?

dr2ray · 09-07-2014, 01:12 PM

Quote:

Originally Posted by AMPowerJ

I bet it will drone ...

I believe any exhaust, without the valves like the OEM exhaust has, will have some amount of drone. It is apparently pretty difficult to design an exhaust without drone and BMW worked hard on this. I had numerous exhausts for my E90/E92 M3s and the only one that flat out didn't drone at all was the OEM and the MPE.

It definitely drones in 7th gear on the freeway. This got somewhat better after about 700 miles

dr2ray · 09-07-2014, 01:13 PM

Quote:

Originally Posted by MGWally

can you tell if it's using 3" piping?

Yes, 3" pipes.

tooch · 09-07-2014, 01:20 PM

doesn't sound bad at all

SOM3 · 09-07-2014, 01:52 PM

Quote:

Originally Posted by dr2ray

It definitely drones in 7th gear on the freeway. This got somewhat better after about 700 miles

It drones and I loose the ability to make it quiet via valves? No thanks.

m3less · 09-07-2014, 04:22 PM

Seems this and mpe are the best video sounding exhaust I've heard... I'm sure pricing for magnaflow will be most affordable.

farbmw · 09-07-2014, 04:59 PM

Quote:

Originally Posted by dr2ray

This exactly. Not much louder but more rumble and grunt. The price should be about 1.5-2k, from what they said. Not sure what the competition one will run. Two cool things about this: 1. the tips are much bigger than OEM.
2. The resonator is much smaller so its not so visible from behind.

Are the tips removable?

Dieselmd · 09-07-2014, 05:52 PM

Can you post a shot of the rear please? I am curious as to how much of the muffler is visible vs the stock unit.

dr2ray · 09-07-2014, 07:58 PM

Quote:

Originally Posted by Dieselmd

Can you post a shot of the rear please? I am curious as to how much of the muffler is visible vs the stock unit.

Stock:

Name: 20140726_110059.jpg
Views: 3370
Size: 422.0 KB

Modded:

Name: rsz_mufflerpostcropped.jpg
Views: 3230
Size: 150.2 KB

Hope this helps.

Schullz51 · 09-07-2014, 08:16 PM

Looks pretty good! I honestly think it sounds good too. It's funny to think of Magnaflow and an M car going together but hey, if the price/look/and sound is right....

09-07-2014, 01:29 AM	#1
dr2ray Auto Doc 17 Rep 65 Posts Drives: 2021 X4MC, 2019 M2C Join Date: Jul 2014 Location: Orange County,CA iTrader: (0) Garage List 2015 BMW M4 [0.00]	M4 Magnaflow Exhaust Prototype Sound Clips Because several people asked, here are some sound clips from my Magnaflow prototype exhaust. To my knowledge, I'm one of only two of these floating around (the other is on a M3). There will be two different versions, normal and super-loud (competition). This is the normal one. Caveats: 1. I'm not the most adept with the GoPro. 2. My neigborhood doesn't have a single street that isn't broken up by an old-fashion East Coast Roundabout, so full out acceleration is limited to one short clip. Hopefully this works on Youtube. Cold start: Short Acceleration:
	Appreciate 0 Tweet Quote

09-07-2014, 01:36 AM	#2
parky1215 Lieutenant Colonel 561 Rep 1,979 Posts Drives: F90 M5C \| G06 X6 M60i Join Date: Nov 2010 Location: Rancho Cucamonga, CA iTrader: (13)	It doesn't sound that much different from stock exhaust.
	Appreciate 0 Quote

09-07-2014, 06:34 AM	#3
karbonphiber Lieutenant 178 Rep 467 Posts Drives: 2015 AW M4 Join Date: Nov 2013 Location: Toronto iTrader: (0)	what are your impressions? any in-cabin vids and pics of the system?
	Appreciate 0 Quote

09-07-2014, 07:35 AM	#4
spool twice Rainbow Racer 1008 Rep 2,539 Posts Drives: BMW M4cs Join Date: Sep 2010 Location: Tampa Bay, FL Area iTrader: (7) Garage List 2019 M4cs [0.00]	I like it. it doesnt sound louder than stock, but it sounds more clear, less muffled, less tinny, more substantial. I could live with this noise/volume.
	Appreciate 0 Quote

09-07-2014, 10:09 AM	#6
MaynardZed Lieutenant Colonel 1231 Rep 1,789 Posts Drives: wife crazy Join Date: Jul 2014 Location: Phoenix iTrader: (0) Garage List 2019 Ford Raptor [0.00] 2016 Porsche 991.1 ... [0.00] 1987 Chevy Camaro I ... [0.00] 1972 Chevy Corvette [0.00] 1999 BMW M3 race car [0.00]	Doesn't sound too bad for being cheaper alternative. __________________ Road course laptimes for BMW M4 2015 6MT WHP East Track: 1:04.880, Arizona Motorsports Park: 1:54.352 Road course laptimes for Porsche 911 991.1 GTS 7MT WHP East Track: 1:02.770, Arizona Motorsports Park: 1:48.889
	Appreciate 0 Quote

09-07-2014, 10:28 AM	#7
shortseller Brigadier General 1003 Rep 3,396 Posts Drives: ‘18 ABM F80ZCP/dct Join Date: Aug 2010 Location: NOVA iTrader: (0)	Definitely better tone than OEM. Not bad if priced right. Hope to see and hear more in the coming months as this progresses to a final product. And I assume it's American made as well, yes? __________________
	Appreciate 0 Quote

09-07-2014, 11:01 AM	#8
qwickm3 Private First Class 24 Rep 112 Posts Drives: F80 M3,997 Turbo, Spec E46 Join Date: Jul 2010 Location: Augusta, GA iTrader: (0)	I like it and it will priced like a collection of steel tubes should be!
	Appreciate 0 Quote

09-07-2014, 11:13 AM	#9
Maz335i BMW 4 Life... 148 Rep 3,360 Posts Drives: 2015 SO M3 (on order) Join Date: Feb 2012 Location: Mississauga, Ontario iTrader: (0)	Not bad TBH. Curious to hear pricing. __________________ MODS: * / M Sport + Performance / Meisterschaft / Challenge / MORR / more to come! *
	Appreciate 0 Quote

09-07-2014, 11:49 AM	#11
E92LNGCGY Lieutenant Colonel 434 Rep 1,732 Posts Drives: F97/Q5/982 GT4 Join Date: Jan 2011 Location: Canada iTrader: (0)	Sounds pretty good. I think the price will be very reasonable too. Wonder how much louder the competition version would be.
	Appreciate 0 Quote

09-07-2014, 12:13 PM	#12
AMPowerJ One mod leads to another ... 416 Rep 2,900 Posts Drives: 2014 F10 M5 Join Date: Apr 2008 Location: Blythewood, SC iTrader: (10)	I bet it will drone ... I believe any exhaust, without the valves like the OEM exhaust has, will have some amount of drone. It is apparently pretty difficult to design an exhaust without drone and BMW worked hard on this. I had numerous exhausts for my E90/E92 M3s and the only one that flat out didn't drone at all was the OEM and the MPE. __________________ Current: 2014 F10 M5 Previous: 2015 F80 M3, 2013 E92 M3, 2013 F10 M5, 2009 E90 M3, 1998 E36 M3
	Appreciate 0 Quote

09-07-2014, 12:22 PM	#13
MGWally Private First Class 125 Rep 179 Posts Drives: 2015 Austin Yellow M3 Join Date: Dec 2007 Location: Kenilworth, NJ iTrader: (1)	can you tell if it's using 3" piping?
	Appreciate 0 Quote

09-07-2014, 01:20 PM	#16
tooch Captain 112 Rep 806 Posts Drives: F82 Join Date: Jul 2007 Location: NOR-CAL iTrader: (0)	doesn't sound bad at all __________________ 96 E31 JB 07 E92 AW F82 BSM
	Appreciate 0 Quote

09-07-2014, 04:22 PM	#18
m3less Captain 130 Rep 809 Posts Drives: 15 AY M4 Join Date: Dec 2012 Location: Cali iTrader: (2)	Seems this and mpe are the best video sounding exhaust I've heard... I'm sure pricing for magnaflow will be most affordable.
	Appreciate 0 Quote

09-07-2014, 05:52 PM	#20
Dieselmd Private 9 Rep 95 Posts Drives: MW SO M4 DCT. EB M235i Join Date: Oct 2011 Location: United States iTrader: (1)	Can you post a shot of the rear please? I am curious as to how much of the muffler is visible vs the stock unit.
	Appreciate 0 Quote

09-07-2014, 08:16 PM	#22
Schullz51 Private First Class 75 Rep 146 Posts Drives: 2015 AY M3 Join Date: Aug 2014 Location: Pittsburgh iTrader: (0)	Looks pretty good! I honestly think it sounds good too. It's funny to think of Magnaflow and an M car going together but hey, if the price/look/and sound is right....
	Appreciate 0 Quote