OEM Resonators

J08M3 · 02-19-2009, 07:42 AM

What exactly do the resonators do and why are they there? What happens to the sound if you remove them? Do they inhibit exhaust flow?

As of now I was under the impression they help eliminate any drone? Will the system be any louder if you eliminate them, or possibly just drone a bit more?

MMMorish · 02-19-2009, 09:08 AM

The system will be louder and you'll get a lot of drone.

J08M3 · 02-19-2009, 09:45 AM

Just louder or will the actual sound be different?

This will lead to my next question about the Supersprint X-Pipe

Nate@IND · 02-19-2009, 09:53 AM

Quote:

Originally Posted by J08M3

Just louder or will the actual sound be different?

This will lead to my next question about the Supersprint X-Pipe

We have an SS X-pipe outside the shop in the snow

shoot Ilia a pm if you want it. I think the Eisenmann Sport will sound amazing with a resonator delete.

J08M3 · 02-19-2009, 10:05 AM

Quote:

Originally Posted by Nate@IND

We have an SS X-pipe outside the shop in the snow

shoot Ilia a pm if you want it. I think the Eisenmann Sport will sound amazing with a resonator delete.

What's it doing in the snow?

What do you think it will do to the sound? I'm seriously considering it. Both interior and exterior sound? Think it'll add any drone if I eliminate resonators?

camaross305 · 02-19-2009, 10:18 AM

Quote:

Originally Posted by J08M3

What's it doing in the snow?

What do you think it will do to the sound? I'm seriously considering it. Both interior and exterior sound? Think it'll add any drone if I eliminate resonators?

Resonators are there to quiet the exhaust..... They restrict the exhaust flow slightly but not as much as a cat or anything.... Problem is deleting them leads to more rasp and drone in the exhaust than deleting a cat. But if you got the SS x it would probably be ok since your still keeping the front cats.

J08M3 · 02-19-2009, 10:22 AM

I'm thinking AA has the right designed X-Pipe cause it still includes resonators, but man $2k is a lot of money.

camaross305 · 02-19-2009, 10:29 AM

Quote:

Originally Posted by J08M3

I'm thinking AA has the right designed X-Pipe cause it still includes resonators, but man $2k is a lot of money.

Yea thats why you either

A) just delete your cats on your piping now and add an x pipe (exhaust shop will do it for like 200$

B) Just go on ebay and buy some resonators about 50$ and a Stainless x pipe ~ 35$ and have an exhaust shop build you one from scratch ~200-300$ in labor and piping if you don't want to hack up your stocker

sparkyg · 02-19-2009, 10:39 AM

It is not that simple to just shove an X pipe in there. Useless if you are not going to test and optimize it.

Better to leave it alone and just change the muffler. Why waste all the time and effort and then no increase in performance.

GT3 Tim · 02-19-2009, 10:49 AM

Quote:

Originally Posted by MMMorish

The system will be louder and you'll get a lot of drone.

Disagree

I removed mine and there is no drone at all. The only difference I noticed was that it was a bit more "raspy". It does not bother me at all. In fact, I like the sound now.

camaross305 · 02-19-2009, 12:11 PM

Quote:

Originally Posted by sparkyg

It is not that simple to just shove an X pipe in there. Useless if you are not going to test and optimize it.

Better to leave it alone and just change the muffler. Why waste all the time and effort and then no increase in performance.

Not true..... by simply getting rid of the cats you will gain HP... an X pipe isnt rocket science.... i mean yea if you optimized the placement of the x pipe you would gain more HP but maybe 1hp or 2... nothing major...... A member actually went to an exhaust shop did an H pipe (what i might do) and from software, h pipe, deleting the cats (in the stock piping) , gained 90 rear wheel TQ

.....

!Xoible · 02-19-2009, 12:22 PM

http://auto.howstuffworks.com/muffler4.htm

///M PWR 00 · 02-19-2009, 01:25 PM

Quote:

Originally Posted by camaross305

Not true..... by simply getting rid of the cats you will gain HP... an X pipe isnt rocket science.... i mean yea if you optimized the placement of the x pipe you would gain more HP but maybe 1hp or 2... nothing major...... A member actually went to an exhaust shop did an H pipe (what i might do) and from software, h pipe, deleting the cats (in the stock piping) , gained 90 rear wheel TQ

.....

That is fucking amazing. Dyno? Pictures of the setup. I am dying to hear an H pipe as opposed to an X pipe.

Quote:

Originally Posted by GT3 Tim

Disagree

I removed mine and there is no drone at all. The only difference I noticed was that it was a bit more "raspy". It does not bother me at all. In fact, I like the sound now.

Sound clip?

02-19-2009, 07:42 AM	#1
J08M3 Major General Drives: 2011 M3 COUPE Join Date: May 2008 Location: NEW YORK Posts: 6,015 iTrader: (8)	OEM Resonators What exactly do the resonators do and why are they there? What happens to the sound if you remove them? Do they inhibit exhaust flow? As of now I was under the impression they help eliminate any drone? Will the system be any louder if you eliminate them, or possibly just drone a bit more? __________________
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02-19-2009, 09:08 AM	#2
MMMorish Just call me J.J. McClure Drives: E92 M3 & C4 Corvette Join Date: Sep 2008 Location: Toronto Posts: 2,838 iTrader: (5)	The system will be louder and you'll get a lot of drone. __________________ MODS: Meisterschaft GT Racing Exhaust / BMC Air Filter / UUC SSK & DSSR (Modded)/ RPI Scoops / Passport SRX Hardwired / Custom Wrap 3M Clearbra / 20% Tint / 50% Windshield Tint / Key Hole Delete / Matted Out Accessories / VRS Type II Diffuser / Smoked Reflectors / Euphoria 6K LED Interior Lights / Rear Fog Light Mod / 6000K HID's / 6500K LUX H8 Angel Eyes / RDash License Plate LED Kit / LED Xenon Reverse Lights "M3 drivers have no friends"

02-19-2009, 09:45 AM	#3
J08M3 Major General Drives: 2011 M3 COUPE Join Date: May 2008 Location: NEW YORK Posts: 6,015 iTrader: (8)	Just louder or will the actual sound be different? This will lead to my next question about the Supersprint X-Pipe __________________

02-19-2009, 10:22 AM	#7
J08M3 Major General Drives: 2011 M3 COUPE Join Date: May 2008 Location: NEW YORK Posts: 6,015 iTrader: (8)	I'm thinking AA has the right designed X-Pipe cause it still includes resonators, but man $2k is a lot of money. __________________

02-19-2009, 10:39 AM	#9
sparkyg Brigadier General Drives: E90 M3 Join Date: Sep 2007 Location: Oil Country Posts: 3,282 iTrader: (5) Garage List 2008 E90 M3 [3.50]	It is not that simple to just shove an X pipe in there. Useless if you are not going to test and optimize it. Better to leave it alone and just change the muffler. Why waste all the time and effort and then no increase in performance. __________________

02-19-2009, 12:22 PM	#12
!Xoible Banned Drives: .... Join Date: Nov 2006 Location: . Posts: 46,045 iTrader: (4) Garage List 2008 M3 [3.50] 2007 335i [4.50] 2008 528i [4.00] 2006 Infiniti - G35 ... [4.00]	http://auto.howstuffworks.com/muffler4.htm

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