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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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      10-02-2012, 08:51 AM   #67
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^^Tuning issue?? Smh...
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      10-02-2012, 09:06 AM   #68
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Quote:
Originally Posted by 325imax View Post
Simply removing the inside baffles is not going to make it sound good. Just louder. There is a tuning issue as well. MMW CS has been making clone Performance mufflers for years.
MMW CS makes muffler for the n52, not for the n54 correct?
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      10-02-2012, 09:32 AM   #69
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Originally Posted by tomz_335i View Post
I just decided to pull mine off and replace the internal cat, h pipe and all perforated pipes with straight pipes. Will post a video once I get it back from the shop in a few days (I have straight pipes on for the time being, they are loud as hell).
I did this and hated it. Everything in the cabin rattled and it was a loud sound, not a nice sound.

I threw my OEM one back on for the time being until I can come up with a solution.
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      10-02-2012, 04:54 PM   #70
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Originally Posted by shaginwagon13 View Post
I did this and hated it. Everything in the cabin rattled and it was a loud sound, not a nice sound.

I threw my OEM one back on for the time being until I can come up with a solution.
I hear that more when the car is cold and first started. Getting used to it but I will have the exhaust back on Saturday, so I am willing to deal for a while.
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      10-02-2012, 05:33 PM   #71
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Quote:
Originally Posted by tomz_335i View Post
I just decided to pull mine off and replace the internal cat, h pipe and all perforated pipes with straight pipes. Will post a video once I get it back from the shop in a few days (I have straight pipes on for the time being, they are loud as hell).
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Originally Posted by tomz_335i View Post
I hear that more when the car is cold and first started. Getting used to it but I will have the exhaust back on Saturday, so I am willing to deal for a while.
I understand what your doing, but essentially you turned your OEM exhaust into a muffler delete. Even though its in the OEM muffler housing, putting straight pipe inside is accomplishing the same as cutting the mufflers off and welding on pipe.
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      10-02-2012, 06:16 PM   #72
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Not quite. There is an H pipe in the oem exhaust and the mufflers will quiet down most of the.drone that comes from the muffler delete I have now.
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      10-02-2012, 06:16 PM   #73
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And so I will be the guinea pig and post videos when ready.
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      10-02-2012, 06:25 PM   #74
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And so I will be the guinea pig and post videos when ready.
When I finally get time ill put the DIY together. Are they removing the wool stuff inside?
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      10-02-2012, 06:35 PM   #75
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Yeah, all of it.
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      10-02-2012, 07:05 PM   #76
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what about making several holes maybe in those straight pipes and keeping some of the wool in the box, to reduce some of the noise, I mean it would take a lot of time to figure out the proper amount.
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      10-02-2012, 09:15 PM   #77
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Quote:
Originally Posted by tomz_335i View Post
And so I will be the guinea pig and post videos when ready.
haha If this works I am hopping on board. I would be one to try this out but I blew $300 for my muffler delete which I had to get taken off because it was too loud.

I hope this works, please post a video!!
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      10-03-2012, 05:35 PM   #78
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^^Thats a shitload of cash for a muffler delete. I spent 120 for mine.
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      10-03-2012, 06:08 PM   #79
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Originally Posted by tomz_335i View Post
^^Thats a shitload of cash for a muffler delete. I spent 120 for mine.
They welded my pipe they didn't use clamps, I got stainless steel pipe and my tips I got send out for powdercoat. I agree 300 is a lot but I wanted to give it a shot and they were the best muffler guys in the area
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      10-03-2012, 07:39 PM   #80
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Oh ok. I would think that the powdercoating would be where the money went. They soldered mine as well with stainless.
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      10-07-2012, 07:13 AM   #81
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Here at the muffler shop.....wish me luck fellaz....
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      10-07-2012, 11:50 AM   #82
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Quote:
Originally Posted by tomz_335i
Here at the muffler shop.....wish me luck fellaz....
Here we go!
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      10-07-2012, 12:07 PM   #83
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I have it on.....mechanic promised me pics later of what he did, but I got a look inside. It sounds siiick. Lots of burbling and crackling without the drone. Sounds very nice when you rev the engine and very similar to a PE exhaust.

He took out all of the insulation and perforated piping, and removed the H pipe, so its basically a straight pipe setup running through the mufflers. For some reason, the addition of the muffler through the pipes eliminates the drone. FWIW, I do have my main cats on, with the secondaries deleted.

Video up later!
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      10-07-2012, 12:38 PM   #84
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Nice! In for sound clips
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      10-07-2012, 01:12 PM   #85
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cant wait to see this
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      10-07-2012, 01:25 PM   #86
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What size tips are those?
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      10-07-2012, 02:38 PM   #87
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3.7 Cyba burnt titanium.
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      10-07-2012, 02:46 PM   #88
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Are the tips welded to stock exhaust? Where did u source them from or are they custom?
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