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BMW 3-Series (E90 E92) Forum
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I cut open my N52 Muffler today...
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08-30-2017, 02:19 PM | #89 | |
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That is exactly what I was thinking! Although I do wonder what sort of impact the old man hair has... Now, it is just getting around to doing it! lol |
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08-30-2017, 04:03 PM | #90 |
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09-04-2017, 01:15 PM | #91 |
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Hi everyone,new guy here.Thought I would share my experience of what i did on my 2008 325i.I went and bought a stock E82 135i muffler then did the PE mod before fitting it on to my car. It sounds great for me,its got that refined I6 tone. Drive spiritedly for a while and it starts to pop and crackle on liftoff. Here is a video i took.
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09-06-2017, 07:47 AM | #92 | |
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09-07-2017, 01:35 AM | #93 |
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09-07-2017, 04:40 AM | #94 | ||
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10-08-2017, 12:41 PM | #95 |
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Thanks to this thread, I recently reworked my "N52"(actually an N51, so I can't call it an N52 in good conscience) muffler.
I took a different approach than I've seen anyone else take, and the results are fantastic! After cutting open the casing, I came up with my plan. I then cut the two ~1.75" tailpipe 90's out, and removed the tailpipes altogether. I got a 3" 90*, and a 2.25" 180* mandrel bend from a local exhaust supply shop to make my new routing. I'll let the pics speak for themselves, but it tuned out great. To be clear- all the packing went back in. The new routing is very simple- the 2.75" inlet comes in, goes through the perforated/packed section once, and goes through a custom 3" to dual 2.25" tailpipe y. The 3" worked perfect to slip over the 2.75" lip where it exits the packing chamber, and also wasn't difficult to flatten in order to transition well to the 2.25" y. As you can see, I cut open WAY more than I needed to. My original plan was to try to clone the PE more closely, but after looking at how much fabrication work that would be, I came up with a much easier(and better, IMO) method. If you follow my method, you only need to cut open the tailpipe-side chamber. 2.25" to 3" stainless single wall tips are damn near impossible to find, so I got two rolled edge tips, and cut them to my liking. Hope this helps a member- or two- with their own N52 muffler chop. Enjoy!
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Stuff- PE Clone Muffler | Sec Cats Deleted Retrofits- Rear View | L7 Tweeters |
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David0ff1059.00 The Nightman1090.00 |
10-08-2017, 01:06 PM | #96 |
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Here's a short little video of the result-
Sorry for the rain noise; it's Oregon Aside from the muffler re-work, the car is 100% stock. Res still in place.
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10-10-2017, 04:19 PM | #98 |
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Not really. Actually, not at all.
Just like the PE, it still has a perforated section of pipe- with packing around it that absorbs waves- in the center chamber. I've heard muffler deletes drone, and mine has no drone, so it's still a very effective muffler.
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10-11-2017, 08:18 AM | #99 |
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Gotcha, still has about 4-6" of perforated pipe with packing around and chamber.
Nicely done. |
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10-21-2017, 11:24 AM | #100 |
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i chopped opened mine gutted the hair thing and cut two holes on the inlet and exit pipes. Exhaust sound is still silent but has more volume on idle when you rev it . its better than stock but i might go and chop the whole piping out idk lol...
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10-22-2017, 04:51 AM | #101 | |
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And thank you! You really have to re-route the pipes to make it worth cutting open the muffler.
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10-25-2017, 09:15 AM | #102 |
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hey mate, really nice muffler mod you got there however I dont know much about mufflers so can you please tell me if this cutout plan is any good. Any potential problems or incorrect connections? Cheers
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10-29-2017, 12:11 AM | #103 | |
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You would be effectively necking your exhaust down to a single 2" outlet. On the stock setup, we have a 2.75" inlet, and dual 2" outlets. By splicing the outlets into one, you're only allowing a single 2" outlet.
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10-30-2017, 09:24 PM | #105 | |
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Here's some decent pictures I took-
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11-06-2017, 02:31 AM | #106 | |
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11-06-2017, 08:23 AM | #107 | |
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Copy what I did, and you will have a very good sounding- yet very tame- exhaust.
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11-07-2017, 08:50 AM | #108 |
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11-17-2017, 06:42 AM | #109 |
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I bought a spare muffler to work on for $50.
I cut open the left side box area where the tips go into. Cut out the 2 long 90* 1.75" pipes going to the tips. Ordered a piece of 3" mandrel bent elbow. Going to flatten out/oval one side of the 3" 90* and split it and slightly widen it to fit over the cut pipe going to the tips. So one side of the 3" 90* will go to the large 'inlet' pipe in this area. And the other end will be flattened to oval and split and widened to fit over the exit pipes. It will be like this pic but simpler and I am going to leave the stock tips and short stub pipes inside coming from the tips. |
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11-17-2017, 07:39 PM | #110 |
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Hm, trying to understand how you'll connect the outlets to one pipe without a Y. Will it not quite be sealed to the outlets? Probably fine if it's not, really.
Looking forward to seeing pics! I think you'll be pleased with the sound. It's surprisingly tame, and sounds really good! Not sure how much sound difference my larger outlets make, but I wouldn't think much at all.
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