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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Modify OEM exhaust to sound like PE exhaust



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      11-29-2012, 05:28 PM   #265
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Quote:
Originally Posted by Ace_HollyWood
Not sure why no one has posted this thread yet....

http://www.e90post.com/forums/showth...g+from+muffler
Clearly didnt read the thread.
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      11-29-2012, 05:34 PM   #266
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Muffler delete

http://m.youtube.com/#/watch?v=DOcka7AjUb8 ---> cold start

http://m.youtube.com/watch?v=c8KQ5h516EM ---> quick rev


I presonally don't understand why people go do a muffler delete and complain that it's too loud. Obviously it's going to make a lot of sound, you're removing mufflers! There is a tiny bit of drone but after 1 week you can't hear anything. If you play music you won't be hearing any drone at all! Also there is a slight rattle in the rear center console slidding compartment of the car, you stuff it with a tshirt and close it. You won't hear a single thing! I love my muffler delete and it pops just like popcorn! I feel some backpressure so i'm thinking of putting some kittyless dp's soon when vrsf comes out with their dp's for xdrive!
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      11-29-2012, 06:21 PM   #267
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Quote:
Originally Posted by Ace_HollyWood View Post
Not sure why no one has posted this thread yet....

http://www.e90post.com/forums/showth...g+from+muffler
My post #24
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      11-29-2012, 07:31 PM   #268
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Quote:
Originally Posted by Ace_HollyWood View Post
Not sure why no one has posted this thread yet....

http://www.e90post.com/forums/showth...g+from+muffler
So then those pics prove the packing isn't just inside the passenger side, but inside the driver's as well. Correct?

Which goes against what Sered said, that there ISN'T any packing on the driver's side...

So I wonder in his vid, if he's really removed most of the packing in the pass side only, or driver's side too...

Quote:
Originally Posted by Sered View Post
Yup. 75% packing removed. And upon opening, there was no packing in the driver-side muffler (the one with the mini resonator).
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      12-01-2012, 08:30 AM   #269
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Quote:
Originally Posted by tomz_335i View Post
The perforated pipes were replaced with straight piping, and all of the packing was removed. No drone and no buzzing, but loud. It's sound pretty good, video doesnt do it justice. I would however recommend keeping the resonator on the driver side and remove only half of the packing so it sounds a little less loud.

So i dropped off my OEM mufflers yerterday at the muffler shop and im doing what tomz recommended to them.

*replacing all perforated piping with ss non perforated piping.
*leaving the small resonator thats inside the driver side muffler.
*removing half the packing.

Im too busy for the next couple of days but im planning to go by on Wednesday to get them installed. I will post videos of my current set up of Magnaflows with DPs, my old set up of the OEM mufflers with DP's and the new modded OEM mufflers.

Wish me luck!
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      12-01-2012, 08:34 AM   #270
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Make sure they dont delete the h pipe in the process. Good luck!
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      12-01-2012, 09:52 AM   #271
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Quote:
Originally Posted by tomz_335i View Post
Make sure they dont delete the h pipe in the process. Good luck!
Yes i will make sure, IYO am i missing anything else?
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      12-01-2012, 10:10 AM   #272
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I think thats about it. Nothing else...except that if you arent removing the driver side internals, there is no packing in there so you may be able to get away with only opening and modifying the passenger side.
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      12-01-2012, 11:04 AM   #273
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Quote:
Originally Posted by Lotus99 View Post
So then those pics prove the packing isn't just inside the passenger side, but inside the driver's as well. Correct?

Which goes against what Sered said, that there ISN'T any packing on the driver's side...

So I wonder in his vid, if he's really removed most of the packing in the pass side only, or driver's side too...
Actually, that thread doesn't show the driver-side muffler with packing in it. And some of the pics are taken from another thread.

I'm not sure why my driver-side muffler didn't have packing, but it didn't. I've been trying to get verification on that because I found it very odd; and I've been repeatedly mentioning that mine may not be normal. I had 75% of packing removed from the passenger side, that's it.

FWIW, the car is sounding better over time, I'm guessing the packing is getting settled back. With my spark plugs replaced, the car pulls like a freight train and sounds AWESOME at WOT. The entire exhaust note changes.
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      12-01-2012, 11:39 AM   #274
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Quote:
Originally Posted by tomz_335i
I think thats about it. Nothing else...except that if you arent removing the driver side internals, there is no packing in there so you may be able to get away with only opening and modifying the passenger side.
Even if there is no packing in that muffler i am still going to replace the perforated piping in both mufflers no? I the pics from the opened oem mufflers it looks like there are three perforated pipes that need to be replaced with ss pipes total so both mufflers need to be opened regardless, no?
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      12-01-2012, 12:37 PM   #275
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On the driver side, if I remember correctly, there is only that mini muffler with no packing. So you probably dont need to open it.
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      12-01-2012, 03:43 PM   #276
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Quote:
Originally Posted by tomz_335i
On the driver side, if I remember correctly, there is only that mini muffler with no packing. So you probably dont need to open it.
Actually in the side that has the mini muffler there is one perforated pipe and there are two more in the other muffler, so three total and im planning on replacing them all with ss solid pipe.
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      12-04-2012, 04:39 PM   #277
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So i just got off the phone with the muffler guy and he will replace all three perforated pipes with SS solid pipes however he recommended that i keep all the packing material inside the muffler.

So now i am...

*Keeping all the packing inside the mufflers.
*replacing all three perforated pipes with SS solid ones
*leaving everyting else as is.
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      12-04-2012, 06:13 PM   #278
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Quote:
Originally Posted by tomz_335i View Post
On the driver side, if I remember correctly, there is only that mini muffler with no packing. So you probably dont need to open it.
Mine had packing on both sides

Of those with no packing on the drivers side were all of them e92s?
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      12-04-2012, 06:17 PM   #279
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Mine was an e92.
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      12-04-2012, 07:04 PM   #280
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Quote:
Originally Posted by tomz_335i View Post
Mine was an e92.
Perhaps, in addition to the resonated xpipe, thatís another difference between the e90 and e92 exhausts.

For those that were interested. I took out all the packing but left the perforated pipe intact. I'm welding it up right now so expect a video to follow in the next few days (most likely this weekend).
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      12-04-2012, 08:45 PM   #281
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Quote:
Originally Posted by JC335xi View Post
Perhaps, in addition to the resonated xpipe, thatís another difference between the e90 and e92 exhausts.

For those that were interested. I took out all the packing but left the perforated pipe intact. I'm welding it up right now so expect a video to follow in the next few days (most likely this weekend).
You sir have done exactly what I want please remember to update
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      12-04-2012, 09:02 PM   #282
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Perforated pipes allow the sound waves to escape, packing absorbs them.
Without perforation, it IS essentially a muffler delete, and without packing, the perforation doesn't really serve much of a purpose.
I personally think removing 50-75 % of the packing and leaving the perforation intact is the best thing to do. Anyway looking forward to the outcome of your method.
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      12-04-2012, 09:09 PM   #283
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Quote:
Originally Posted by JC335xi View Post
Perhaps, in addition to the resonated xpipe, thatís another difference between the e90 and e92 exhausts.

For those that were interested. I took out all the packing but left the perforated pipe intact. I'm welding it up right now so expect a video to follow in the next few days (most likely this weekend).
Model for what I want. Make sure to update (copying above post)!
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      12-04-2012, 09:19 PM   #284
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Quote:
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Model for what I want. Make sure to update (copying above post)!
My exhaust setup is entirely stock except the golf tee mod and now the removal of the packing.

I'll take some video later but initial reaction is so-so. Cold start up is noticeably louder and I was a little worried it was going to be too loud at first. But when I'm just cruising around town it actually doesn't sound much louder than stock. It's a bit louder when you get on it but not a dramatic difference IMHO. If I was going to do it again I would probably cover half the perforations.
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      12-04-2012, 09:25 PM   #285
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Also as a side note. I was amazed at how much water came out of the mufflers. The packing was soaked and before I cut them open I stood them up in the driveway to let the water drain out and there was enough in them to leave a stream all the way to the street...
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      12-05-2012, 07:07 AM   #286
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Quote:
Originally Posted by tomz_335i View Post
Mine was an e92.
As was mine
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