Official N52 Exhaust Media Thread

atmosphericM · 04-05-2018, 10:24 AM

Quote:

Originally Posted by 6ixSpd

... it's not that expensive to cut out the resonator and replace it with straight metal tubing.

Yeah it isn't too expensive, but because our exhaust from the headers back is all one piece and our OE resonator also acts as the merge for our "y-pipe," deleting the resonator isn't quite as easy as just welding in one pipe, unfortunately, as it is with many cars. You'd need to weld in a Y collector as well as some piping so it would be 6 welds total. My guesstimate is about $100-200 for parts and labor, depending on the shop/quality of work. Probably about the same you'd pay to have a shop weld pipes in place of the secondary cats. Or you could just buy my aFe race pipes for sale in the classifieds section.

FlaPatsFan · 04-05-2018, 11:13 AM

Quote:

Originally Posted by atmosphericM

I've had a few cars with no cats at all and the smell has never bothered me. I never even notice it. That said, I'd probably run secondaries if no primaries to reduce the sound levels depending on your setup.

BimmerNugget, my suggestion to you is delete the secondary cats. This should give you more sound, more rasp, and more power.

I will be catless for a bit, so I will test it out then decide. My current set up is pretty damn good. Curious to see how it will change with the AA header install.

Taskmaster · 04-05-2018, 11:59 AM

Quote:

Originally Posted by FlaPatsFan

I will be catless for a bit, so I will test it out then decide. My current set up is pretty damn good. Curious to see how it will change with the AA header install.

Loud. If you ever catch me on the highway, it's obnoxious. Cruising is fine though.

FlaPatsFan · 04-06-2018, 03:49 PM

Quote:

Originally Posted by Taskmaster

Loud. If you ever catch me on the highway, it's obnoxious. Cruising is fine though.

Yeah, I’m affraid it may be to loud. If so I will reinstall the secondaries.

What exactly is your exhaust set up?

Taskmaster · 04-06-2018, 05:11 PM

Quote:

Originally Posted by FlaPatsFan

Yeah, I’m affraid it may be to loud. If so I will reinstall the secondaries.

What exactly is your exhaust set up?

Headers, Super Sprint mids and BMW Performance Exhaust.

3002 tii · 04-13-2018, 07:26 PM

NASA season opener today at Lime Rock, really loving the exhaust sound. Drive to/from home is drone free but it comes alive under WOT

FlaPatsFan · 04-14-2018, 02:23 PM

Quote:

Originally Posted by Taskmaster

Headers, Super Sprint mids and BMW Performance Exhaust.

Nice set up, I’ll post results when mine is finished. Should be in next few weeks.

Kubricks · 04-20-2018, 09:19 PM

Always love exhaust sound thread lol, here is my contribution;

130i 6MT with mods concerning sound;
- Vortech V3 at 6psi (it doesn't make a lot of sound tbh.)
- Custom K&N intake located at foglight area.
- OEM header and OEM resonator.
- BMW Performance Exhaust.

It sounds nice form the outside but very quiet in the cabin... considering to have the resonator delete.

FlaPatsFan · 04-20-2018, 10:31 PM

Damn bro, where you doing triple the speed limit?!?!? Lol

Sounded nice tho.

TRiCC · 04-22-2018, 02:10 PM

Exhaust sound clips of my BMW Z4 3.0si N52

custom 2.5” single outlet Magnaflow catback exhaust (1) 14" round resonator MF (1) 14" oval muffler MF, Supersprint catless headers, (1) secondary OEM cat, and BPC header tune

It doesnt drone ever, slight rasp but nothing like a S54 headered rasp, and its relatively quiet untill 3.5k rpm to redline. Authority never ever bats an eye when i drive near them civilly LOL

atmosphericM · 04-23-2018, 11:30 AM

^ Sounds really great! Just to be clear, you cut out your secondary cats and then re-installed ONE of them downstream? So is your piping past the merge that small (just over 2 inches or whatever)?

TRiCC · 04-23-2018, 01:19 PM

Thanks! Basically the exhaust doesnt contain any oem bmw piping/components, except for (1) oem secondary cat. All the piping and sound dampening components are 2.5” ID except for the oem secondary cat ID at 2.125” near the header exits, a bit of a bottle neck but I wanted it inline because I live in CA and wanted to dial down the stank/sound!

Quote:

Originally Posted by atmosphericM

^ Sounds really great! Just to be clear, you cut out your secondary cats and then re-installed ONE of them downstream? So is your piping past the merge that small (just over 2 inches or whatever)?

SoCalR · 04-23-2018, 01:28 PM

Here's mine with only a Magnaflow muffler.

Taskmaster · 04-23-2018, 02:27 PM

Quote:

Originally Posted by SoCalR

Here's mine with only a Magnaflow muffler.

How big are those tips? They look great.

SoCalR · 04-23-2018, 02:36 PM

Quote:

Originally Posted by Taskmaster

How big are those tips? They look great.

Thanks! I'm not sure on their size, but I'll measure them when I get home this afternoon and get you the specs.

6ixSpd · 04-23-2018, 04:04 PM

They look like the exact same tips I have with my Magnaflow muffler. 3"

Edit: I'll be selling those tips by the way, changing to a different setup. $50 shipped if anyone's interested

SoCalR · 04-24-2018, 09:50 AM

Quote:

Originally Posted by Taskmaster

How big are those tips? They look great.

Measured them this morning and the OD is 3".

dnguyen415 · 04-24-2018, 11:25 AM

Quote:

Originally Posted by SoCalR

Here's mine with only a Magnaflow muffler.

Sounds great! What model muffler is it?

SoCalR · 04-24-2018, 11:55 AM

Quote:

Originally Posted by dnguyen415

Sounds great! What model muffler is it?

Thanks! Honestly, I don't remember which model it was. I'd have to try and find the reciept, but here's a better shot of it.

View post on imgur.com

Eddiee07 · 04-27-2018, 11:02 AM

Question for the exhaust gurus on here:
Currently have a muffler delete on my 328i looking to get a little more backfire(pop) from it, what would be better a muffler delete + resonator delete or a muffler delete + secondary cat delete? TIA

atmosphericM · 04-27-2018, 11:09 AM

Delete secondary cats

steifan · 04-29-2018, 03:58 AM

Reposting this from the other media exhaust thread (stickied one):

Installed a Schmiedmann (Euro BMW specialist based in Denmark) exhaust on my euro 325i 2006 (N52B25 with 218hp). Dual pipes with one muffler and x-pipe instead of the stock dual pipes to resonator followed by one pipe to rear muffler.
I quickly put together a sloppy little video with a comparison with stock exhaust etc:

The system is built by Supersprint in Italy for Schmiedmann. I think it's only produced after ordering so I think I bought the last one in stock in Denmark via Schmiedmann Sweden. Link to product: https://www.schmiedmann.com/en/bmw-e...=SCM9091R276NR

04-13-2018, 07:26 PM	#72
3002 tii Lieutenant General 2280 Rep 12,565 Posts Drives: Z4 M, X5, GX460 Join Date: Apr 2008 Location: CT iTrader: (99) Garage List F15 X5 xDrive35i [8.75] E86 Z4 M [10.00] F10 550i (Retired) [9.17] F25 X3 xDrive35i (R ... [9.43] E82 135is (Retired) [9.50] E85 Z4 M (Retired) [9.41] E90 328i xDrive (Re ... [9.25] E86 Z4 3.0si (Retired) [9.20]	NASA season opener today at Lime Rock, really loving the exhaust sound. Drive to/from home is drone free but it comes alive under WOT __________________ Follow for latest mods Last edited by 3002 tii; 04-14-2018 at 07:22 AM..
	Appreciate 5 Noir883.00 atmosphericM517.50 desertman1232213.50 Phyrexia502.50 TGSN_30.00 Quote

04-20-2018, 09:19 PM	#74
Kubricks Private First Class 152 Rep 177 Posts Drives: 130i M/T Join Date: May 2009 Location: Taunton UK iTrader: (0)	Always love exhaust sound thread lol, here is my contribution; 130i 6MT with mods concerning sound; - Vortech V3 at 6psi (it doesn't make a lot of sound tbh.) - Custom K&N intake located at foglight area. - OEM header and OEM resonator. - BMW Performance Exhaust. It sounds nice form the outside but very quiet in the cabin... considering to have the resonator delete. __________________ 130i manual \| ESS Supercharged \| Custom remap Birds B1 Suspension set \| Vorshlag Camber plate \| Quaife Limited slip differential \| M3 Chassis parts
	Appreciate 2 Noir883.00 atmosphericM517.50 Quote

04-20-2018, 10:31 PM	#75
FlaPatsFan Major 750 Rep 1,149 Posts Drives: 2011 328i wagon Join Date: Apr 2017 Location: Florida iTrader: (0)	Damn bro, where you doing triple the speed limit?!?!? Lol Sounded nice tho.
	Appreciate 1 Noir883.00 Quote

04-22-2018, 02:10 PM	#76
TRiCC E86 M Coupe 265 Rep 402 Posts Drives: Z4M Coupe Join Date: Oct 2009 Location: SOCAL iTrader: (3)	Exhaust sound clips of my BMW Z4 3.0si N52 custom 2.5” single outlet Magnaflow catback exhaust (1) 14" round resonator MF (1) 14" oval muffler MF, Supersprint catless headers, (1) secondary OEM cat, and BPC header tune It doesnt drone ever, slight rasp but nothing like a S54 headered rasp, and its relatively quiet untill 3.5k rpm to redline. Authority never ever bats an eye when i drive near them civilly LOL __________________ N52 Supersprint/M sport seats/Rouge Engineering/Hood/Trunk/LCI rear conv. FOR SALE Last edited by TRiCC; 04-23-2018 at 01:44 PM..
	Appreciate 5 6ixSpd6011.50 Noir883.00 Taskmaster2465.00 atmosphericM517.50 TGSN_30.00 Quote

04-23-2018, 11:30 AM	#77
atmosphericM Basic Bimmer 518 Rep 935 Posts Drives: E92 328i 6MT ///M Join Date: Sep 2017 Location: B'ham iTrader: (1) Garage List 2013 BMW 328i Coupé ... [10.00]	^ Sounds really great! Just to be clear, you cut out your secondary cats and then re-installed ONE of them downstream? So is your piping past the merge that small (just over 2 inches or whatever)?
	Appreciate 0 Quote

04-23-2018, 01:28 PM	#79
SoCalR New Member 17 Rep 21 Posts Drives: e92 328i Join Date: May 2017 Location: San Diego iTrader: (0)	Here's mine with only a Magnaflow muffler.
	Appreciate 0 Quote

04-23-2018, 04:04 PM	#82
6ixSpd Save the manuals! 6012 Rep 6,742 Posts Drives: '16 M3, '23 718 Spyder Join Date: Feb 2016 Location: 416 iTrader: (4)	They look like the exact same tips I have with my Magnaflow muffler. 3" Edit: I'll be selling those tips by the way, changing to a different setup. $50 shipped if anyone's interested __________________ '16 M3 \| '23 718 Spyder Past: E92 M3, F87 M2, E39 M5, etc
	Appreciate 2 Taskmaster2465.00 SoCalR17.00 Quote

04-27-2018, 11:02 AM	#86
Eddiee07 Enlisted Member 19 Rep 46 Posts Drives: 2007 BMW 328i Join Date: Oct 2015 Location: Southern California iTrader: (0)	Question for the exhaust gurus on here: Currently have a muffler delete on my 328i looking to get a little more backfire(pop) from it, what would be better a muffler delete + resonator delete or a muffler delete + secondary cat delete? TIA Last edited by Eddiee07; 04-27-2018 at 12:31 PM..
	Appreciate 0 Quote

04-27-2018, 11:09 AM	#87
atmosphericM Basic Bimmer 518 Rep 935 Posts Drives: E92 328i 6MT ///M Join Date: Sep 2017 Location: B'ham iTrader: (1) Garage List 2013 BMW 328i Coupé ... [10.00]	Delete secondary cats
	Appreciate 1 Noir883.00 Quote

04-29-2018, 03:58 AM	#88
steifan Private 32 Rep 76 Posts Drives: 325i M-Sport 2006, 323Ci 2000 Join Date: Mar 2015 Location: Dalecarlia, Sweden iTrader: (0)	Schmiedmann exhaust Reposting this from the other media exhaust thread (stickied one): Installed a Schmiedmann (Euro BMW specialist based in Denmark) exhaust on my euro 325i 2006 (N52B25 with 218hp). Dual pipes with one muffler and x-pipe instead of the stock dual pipes to resonator followed by one pipe to rear muffler. I quickly put together a sloppy little video with a comparison with stock exhaust etc: The system is built by Supersprint in Italy for Schmiedmann. I think it's only produced after ordering so I think I bought the last one in stock in Denmark via Schmiedmann Sweden. Link to product: https://www.schmiedmann.com/en/bmw-e...=SCM9091R276NR
	Appreciate 3 Biginboca3761.50 6ixSpd6011.50 Noir883.00 Quote