Modify OEM exhaust to sound like PE exhaust

Marcadelic · 11-02-2013, 10:13 PM

Quote:

Originally Posted by Lankster

Nice, maybe next a video of you doing a few pulls and start up noise?

+1 and what exactly you did to the piping

WhiteFury · 11-02-2013, 10:51 PM

BMW has played tricks on us. We would think that the PE exhaust would be very different, however it's essentially identical with 3 very small differences that change sound critically.

Also I use to run a recording studio so sound is key, and the way sound waves move and the length of piping are critical. Too much or little of anything makes bad results. I have over 60 hours this week invested.

Drone is low to mid frequencies. Typically in the 200-500 hz range.

Those frequencies are usually between 1800-2200 rpms on almost all cars, actually all cars.

Rasp is actually caused not enough back pressure and no toning with proper pipes.

The wife was very lonely this week however I have made it worth it.

More videos to come this weekend. Maybe one tomorrow in the afternoon.

WhiteFury · 11-02-2013, 10:56 PM

Here is a teaser of the muffler completed!

blaster3500 · 11-03-2013, 01:37 AM

Can't wait to hear clips and see what you have done.

secretsquirrel · 11-03-2013, 04:22 PM

Quote:

Originally Posted by blaster3500

Can't wait to hear clips and see what you have done.

+1

WhiteFury · 11-03-2013, 08:24 PM

Here is 2 videos. One cold startup with the flap open and then I close it. Then second video shows the sound of the exhaust even more. I didnt want to get too loud as I would be too loud for the neighbors.

Let me know what you guys think. This exhaust is quiet on the highway and cruise.

Drive By 1st and 2nd gear:

Here is a Cold Start and Rev:

Enjoy!

Lankster · 11-03-2013, 09:50 PM

Quote:

Originally Posted by WhiteFury

Here is 2 videos. One cold startup with the flap open and then I close it. Then second video shows the sound of the exhaust even more. I didnt want to get too loud as I would be too loud for the neighbors.

Let me know what you guys think. This exhaust is quiet on the highway and cruise.

Enjoy!

Sounds perfect!

If you could post exactly what you did to make this that would be amazing because it sounds spot on!

E90gone · 11-03-2013, 11:08 PM

I noticed your an e90. Did you remove the rear resonators as the OEM e90 PE does. I am very excited to see what you have done as I am in the market for exhaust.

Dustz · 11-04-2013, 02:50 AM

hmm very interesting.

M2M2M2 · 11-04-2013, 06:13 AM

This is incredibly exciting.

davidwarren · 11-04-2013, 06:40 AM

Quote:

Originally Posted by Lankster

Sounds perfect!

If you could post exactly what you did to make this that would be amazing because it sounds spot on!

+1
need details please!

f90.kar · 11-04-2013, 10:10 AM

Sounds great! Can't wait to try this! I noticed you have an e90 will the outcome sound the same on an e92?

M2M2M2 · 11-04-2013, 10:34 AM

The anticipation is killing me. I can't wait to see WhiteFury's Homebrew Recipe! Haha.

805beemer · 11-04-2013, 12:18 PM

Traded my car in for a 1 series and the dealer doesn't want the is exhaust from my e90 so there gunna remove it and put the stock mufflers back on before selling the car. So if anyone wants a lightly used set of 335is mufflers let me know. Probably won't have them for a week or so.

Search my username or go back a few pages and you can see a video I posted of the is exhaust.

dlbrooks18 · 11-04-2013, 06:47 PM

Quote:

Originally Posted by 805beemer

Traded my car in for a 1 series and the dealer doesn't want the is exhaust from my e90 so there gunna remove it and put the stock mufflers back on before selling the car. So if anyone wants a lightly used set of 335is mufflers let me know. Probably won't have them for a week or so.

Search my username or go back a few pages and you can see a video I posted of the is exhaust.

Does that include x-pipe as well? I love the pop and gurgle your setup had.. thinking it's mostly due to the x-pipe..

805beemer · 11-04-2013, 07:27 PM

Quote:

Originally Posted by dlbrooks18

Does that include x-pipe as well? I love the pop and gurgle your setup had.. thinking it's mostly due to the x-pipe..

No, x pipe is staying on the car. Can be bought on jegs for an extra $100 or if you have an e92 you already have one. Tips were not shortened either so e92 fitment will be spot on or will stick out an extra inch or so unless you have the muffler shop modify them for an e90.

Glowin · 11-05-2013, 12:21 AM

Quote:

Originally Posted by WhiteFury

BMW has played tricks on us. We would think that the PE exhaust would be very different, however it's essentially identical with 3 very small differences that change sound critically.

Also I use to run a recording studio so sound is key, and the way sound waves move and the length of piping are critical. Too much or little of anything makes bad results. I have over 60 hours this week invested.

Drone is low to mid frequencies. Typically in the 200-500 hz range.

Those frequencies are usually between 1800-2200 rpms on almost all cars, actually all cars.

Rasp is actually caused not enough back pressure and no toning with proper pipes.

The wife was very lonely this week however I have made it worth it.

More videos to come this weekend. Maybe one tomorrow in the afternoon.

This is silly... Either you have something to contribute to this thread as to how you did it, or GTFO. I got no patience!

StevenY. · 11-05-2013, 12:24 AM

Quote:

Originally Posted by WhiteFury

Here is 2 videos. One cold startup with the flap open and then I close it. Then second video shows the sound of the exhaust even more. I didnt want to get too loud as I would be too loud for the neighbors.

Let me know what you guys think. This exhaust is quiet on the highway and cruise.
Enjoy!

I do agree that it does sound like the PE. I hope you come back and tell us your recipe and not disappear like some other members have in the past!

Ace_HollyWood · 11-05-2013, 08:59 AM

White fury....secrets are not fun!!! I'm guessing secondary cat delete with resonators in place and solid pipe welded in muffler

F30Husker · 11-05-2013, 10:21 AM

Quote:

Originally Posted by Lankster

Sounds perfect!

If you could post exactly what you did to make this that would be amazing because it sounds spot on!

+1

EastCoast335i · 11-05-2013, 10:22 AM

Quote:

Originally Posted by Ace_HollyWood

White fury....secrets are not fun!!! I'm guessing secondary cat delete with resonators in place and solid pipe welded in muffler

+1 but a perforated straight pipe welded in the mufflers.
Making the stock mufflers act like a large resonator.
Just my guess

secretsquirrel · 11-05-2013, 01:53 PM

Another one has been compromised boys. Squirrel thinks the BMW agents got to him once they learned he was going to tell the secrets of the holy PE Exhaust. Solving the PE riddle is like the Da Vinci Code!

11-02-2013, 10:51 PM	#552
WhiteFury Boooost! 70 Rep 793 Posts Drives: 335i Join Date: Sep 2013 Location: NJ iTrader: (0) Garage List 2016 Dodge Charger ... [0.00] 2011 BMW 335i [4.80]	BMW has played tricks on us. We would think that the PE exhaust would be very different, however it's essentially identical with 3 very small differences that change sound critically. Also I use to run a recording studio so sound is key, and the way sound waves move and the length of piping are critical. Too much or little of anything makes bad results. I have over 60 hours this week invested. Drone is low to mid frequencies. Typically in the 200-500 hz range. Those frequencies are usually between 1800-2200 rpms on almost all cars, actually all cars. Rasp is actually caused not enough back pressure and no toning with proper pipes. The wife was very lonely this week however I have made it worth it. More videos to come this weekend. Maybe one tomorrow in the afternoon. __________________ JB4 Stage 2 \| Injen CAI \| BMW PE \| AR Catless DP \| Alpina TCU Flash \| Eibach Pro Kit \| Custom TCKline Koni's \| 19" M359 Wheels \| DWS Tires
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11-02-2013, 10:56 PM	#553
WhiteFury Boooost! 70 Rep 793 Posts Drives: 335i Join Date: Sep 2013 Location: NJ iTrader: (0) Garage List 2016 Dodge Charger ... [0.00] 2011 BMW 335i [4.80]	Here is a teaser of the muffler completed! Attached Images __________________ JB4 Stage 2 \| Injen CAI \| BMW PE \| AR Catless DP \| Alpina TCU Flash \| Eibach Pro Kit \| Custom TCKline Koni's \| 19" M359 Wheels \| DWS Tires
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11-03-2013, 01:37 AM	#554
blaster3500 Lieutenant 143 Rep 567 Posts Drives: 07 E90 335i Join Date: Aug 2010 Location: Seneca, SC iTrader: (7)	Can't wait to hear clips and see what you have done. __________________ 07 335 6MT
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11-03-2013, 08:24 PM	#556
WhiteFury Boooost! 70 Rep 793 Posts Drives: 335i Join Date: Sep 2013 Location: NJ iTrader: (0) Garage List 2016 Dodge Charger ... [0.00] 2011 BMW 335i [4.80]	Here is 2 videos. One cold startup with the flap open and then I close it. Then second video shows the sound of the exhaust even more. I didnt want to get too loud as I would be too loud for the neighbors. Let me know what you guys think. This exhaust is quiet on the highway and cruise. Drive By 1st and 2nd gear: Here is a Cold Start and Rev: Enjoy! __________________ JB4 Stage 2 \| Injen CAI \| BMW PE \| AR Catless DP \| Alpina TCU Flash \| Eibach Pro Kit \| Custom TCKline Koni's \| 19" M359 Wheels \| DWS Tires
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11-03-2013, 11:08 PM	#558
E90gone First Lieutenant 20 Rep 352 Posts Drives: E90 Join Date: Jun 2013 Location: Tampa, FL iTrader: (4)	I noticed your an e90. Did you remove the rear resonators as the OEM e90 PE does. I am very excited to see what you have done as I am in the market for exhaust.
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11-04-2013, 02:50 AM	#559
Dustz Chieftain 52 Rep 274 Posts Drives: E90 N54 335i Join Date: Apr 2013 Location: SoCal iTrader: (5) Garage List 2015 BMW F13 640i [0.00]	hmm very interesting.
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11-04-2013, 06:13 AM	#560
M2M2M2 Private First Class 50 Rep 160 Posts Drives: 2007 BMW 335i Join Date: Mar 2012 Location: Cincinnati, OH iTrader: (0)	This is incredibly exciting.
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11-04-2013, 10:10 AM	#562
f90.kar @f90.kar 95 Rep 82 Posts Drives: F90 M5C Join Date: Jan 2012 Location: FL iTrader: (0)	Sounds great! Can't wait to try this! I noticed you have an e90 will the outcome sound the same on an e92? __________________ \| M5C \| Satin Black \| Argon Brown \| MAD Primary & Secondary Catless Downpipes \| RC GTS Black \|
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11-04-2013, 10:34 AM	#563
M2M2M2 Private First Class 50 Rep 160 Posts Drives: 2007 BMW 335i Join Date: Mar 2012 Location: Cincinnati, OH iTrader: (0)	The anticipation is killing me. I can't wait to see WhiteFury's Homebrew Recipe! Haha.
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11-04-2013, 12:18 PM	#564
805beemer Captain 22 Rep 647 Posts Drives: 2008 135i Join Date: Jul 2011 Location: Lompoc, CA iTrader: (4)	Traded my car in for a 1 series and the dealer doesn't want the is exhaust from my e90 so there gunna remove it and put the stock mufflers back on before selling the car. So if anyone wants a lightly used set of 335is mufflers let me know. Probably won't have them for a week or so. Search my username or go back a few pages and you can see a video I posted of the is exhaust.
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11-05-2013, 08:59 AM	#569
Ace_HollyWood Private First Class 7 Rep 122 Posts Drives: 2008 APW e92 335i Join Date: Feb 2012 Location: Cincinnati Ohio iTrader: (1)	White fury....secrets are not fun!!! I'm guessing secondary cat delete with resonators in place and solid pipe welded in muffler
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11-05-2013, 01:53 PM	#572
secretsquirrel Colonel 130 Rep 2,291 Posts Drives: f80 Join Date: Dec 2010 Location: Far North Dallas iTrader: (2)	Another one has been compromised boys. Squirrel thinks the BMW agents got to him once they learned he was going to tell the secrets of the holy PE Exhaust. Solving the PE riddle is like the Da Vinci Code!
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