|
|
|
|
|
|
BMW Garage | BMW Meets | Register | Today's Posts | Search |
|
BMW 3-Series (E90 E92) Forum
>
N52 Exhaust Help (Headers + ?)
|
|
08-06-2018, 02:41 PM | #89 |
Colonel
3764
Rep 2,738
Posts |
If it’s helpful in your decision process I can take more audio of mine or if you are ever down in WPB area you can take it for a ride and see how you like it. It sucks to pay money to have something installed and then not like it.
|
Appreciate
1
Noir883.00 |
08-06-2018, 03:47 PM | #91 | ||
Basic Bimmer
518
Rep 935
Posts
Drives: E92 328i 6MT ///M
Join Date: Sep 2017
Location: B'ham
|
Quote:
OK, so how do you explain this? Quote:
If aftermarket headers are so loud, and the OE resonator isn't cancelling any more noise than the PE's y-pipe, how do you explain what's happening there? I'm not saying that a resonators 'job' is to attenuate an exhaust system's overall noise-level (however it is certainly it's job to attenuate the noise at a certain frequency which I would argue obviously attenuates sound overall, at least to some degree...), but I think the real confusion here is stemming from the fact that our OE resonator isn't JUST a resonator. We just call it that. And because of what it really is - a y-merger built into a chamber that also has resonating properties as well as what I personally believe to be MUFFLING properties - I feel, at least at this point (with very limited data), that the OE "resonator" does quieten the exhaust more than an aftermarket resonator does. Regardless, we need more people to experiment and record objective data (i.e. SPL meter) to ever really know for sure. That's my opinion on the matter though and I am sticking to it until proven wrong.
__________________
Black Sapphire 328i ///M Sport Coupé Save the Manuals! Last edited by atmosphericM; 08-06-2018 at 03:58 PM.. |
||
Appreciate
0
|
08-06-2018, 04:14 PM | #92 | |
Banned
2465
Rep 9,004
Posts |
Quote:
|
|
Appreciate
1
dwashy64.50 |
08-06-2018, 04:31 PM | #93 |
Basic Bimmer
518
Rep 935
Posts
Drives: E92 328i 6MT ///M
Join Date: Sep 2017
Location: B'ham
|
I was actually curious and just did a little research and, lo and behold, the E9x "resonator" is actually called the "center muffler" on parts diagrams, literature, etc.
So there you go. It isn't a resonator. It muffles and makes the exhaust quieter. Now to get the PSA out there so that everyone in the E9x scene stops calling it a resonator. (lol, yeah, right...)
__________________
Black Sapphire 328i ///M Sport Coupé Save the Manuals! Last edited by atmosphericM; 08-06-2018 at 04:39 PM.. |
Appreciate
0
|
08-06-2018, 04:34 PM | #94 | |
Banned
2465
Rep 9,004
Posts |
Quote:
https://www.realoem.com/bmw/enUS/sho...diagId=18_0611 I got curious about it because the 1 series doesn't come with secondaries like the E90 does - and the one series PE does remove the "center muffler" |
|
Appreciate
0
|
08-06-2018, 05:48 PM | #95 |
Second Lieutenant
152
Rep 275
Posts |
Put the stock resonator back in, it makes a huge difference. At least it did for me.
__________________
Current: 2021 BMW X3 M40i (Phytonic Blue) Sold: 2017 BMW X3 28i (Deep Sea Blue) | 2011 BMW 328i E90 (LeMans Blue) | 2007 Saab 9-3 2.0T (Silver Metallic) | 2005 Scion tC (Indigo Ink Pearl) |
Appreciate
0
|
08-06-2018, 10:21 PM | #96 | |
Major
750
Rep 1,149
Posts |
Quote:
As for my set up....don’t get me wrong it sounds great but it is loud. It definitely has a serious race quality to it. I’m not one to have an obnoxious exhaust but some ppl may view it that way. Not that I care, I’m more concerned with not waking up my 1yo when he’s sleeping. Lol |
|
Appreciate
1
Biginboca3763.50 |
08-06-2018, 10:50 PM | #97 |
E82 Mudflap Ambassador
2214
Rep 2,219
Posts
Drives: '08 128i
Join Date: May 2016
Location: Orlando, FL
|
Data point:
I got AA headers and a muffler delete. Inside the cabin (with the rear seats UP) the volume is quite nice. It does drone a bit on the highway, but it's on the level of noise with the wind and tires, not bad but definitely there. Keep in mind I'm around 3.5k@80mph with the 3.73 rear. Above 4.5k the rasp intensifies greatly. Downshifts are pretty loud, and there is rasp on decel from higher RPMs. Nothing bone rattling. You can make it quiet but as soon as you get anywhere near the throttle, the noise increases pretty linearly. It's appropriate for a car guy, but even this is right at the threshold for me - but I'm trying to balance this car as the ultimate daily that is for car guys and lightly trackable. I'm looking into a small muffler I can add inline. I think the exhaust is 2.25" by where the stock muffler is. I love the sound but just want a slight reduction, not as much reduced as was described with the stock setup+AA headers. Suggestions? Taskmaster 1 series indeed can come with secondary cats. Mine has em, and I have zero intentions of removing them. I think it goes something like this Federal legal: No secondaries ULEV: Secondaries SULEV: N51
__________________
My 2008 128i - Sparkling Graphite/Beige - Sport pkg - 6MT - Click me!
Parents' 2014 528i - Mineral White/Ivory White - fully loaded Instagram @Andreys_128i and @Honda.Bito |
Appreciate
1
atmosphericM517.50 |
08-07-2018, 09:53 AM | #99 | |
Basic Bimmer
518
Rep 935
Posts
Drives: E92 328i 6MT ///M
Join Date: Sep 2017
Location: B'ham
|
Quote:
Curious, does the 128i have a center muffler? All the same components as the 3er (catted headers, catted front pipes (secondaries), center muffler/y-pipe, rear muffler)?
__________________
Black Sapphire 328i ///M Sport Coupé Save the Manuals! |
|
Appreciate
0
|
08-07-2018, 10:01 AM | #100 | |
Basic Bimmer
518
Rep 935
Posts
Drives: E92 328i 6MT ///M
Join Date: Sep 2017
Location: B'ham
|
Quote:
That's one reason that I'm even more excited about going to the 3.73 rear end, though. Bumping up the revs should eliminate that tiny bit of drone I have. I bet if you were on your stock rear end, your droning would be worse for sure. It sure is fun thinking about exhausts, and cars in general - and trying to essentially reverse-engineer what the guys at BMW did.
__________________
Black Sapphire 328i ///M Sport Coupé Save the Manuals! |
|
Appreciate
0
|
08-07-2018, 11:59 AM | #101 | |
E82 Mudflap Ambassador
2214
Rep 2,219
Posts
Drives: '08 128i
Join Date: May 2016
Location: Orlando, FL
|
Quote:
I'm worried about it being TOO quiet. I was thinking the stock muffler would do that, but an aftermarket, straight-thru muffler would be a good middle ground. And yes the 128i has a center muffler, I'm pretty sure the exhaust is identical besides length and shape. Oh I forgot to mention my exhaust pops and cracks like I have a burble tune, especially when it's cold. Around 3k RPM if I let off, or tap the gas lightly it goes POP POP POP. Sometimes when I shift there'll be a pop inbetween gears. Sounds good lol.
__________________
My 2008 128i - Sparkling Graphite/Beige - Sport pkg - 6MT - Click me!
Parents' 2014 528i - Mineral White/Ivory White - fully loaded Instagram @Andreys_128i and @Honda.Bito |
|
Appreciate
1
Noir883.00 |
08-18-2018, 10:23 AM | #102 | |
Colonel
3764
Rep 2,738
Posts |
Quote:
|
|
Appreciate
1
Noir883.00 |
09-12-2018, 07:12 AM | #103 | |
Major
750
Rep 1,149
Posts |
Quote:
This has been extremely frustrating and expensive! Fingers crossed it will all workout. Side note....I installed Euro box with K&N filter, sounds pretty sweet I must say. |
|
Appreciate
1
Biginboca3763.50 |
04-03-2019, 06:58 PM | #104 | |
Lieutenant
257
Rep 437
Posts |
Quote:
|
|
Appreciate
1
Biginboca3763.50 |
04-08-2020, 12:19 AM | #105 | |
Lieutenant
257
Rep 437
Posts |
Quote:
Sec 2 delete. How is the smell if any with your set up Biginboca? |
|
Appreciate
0
|
04-08-2020, 12:53 AM | #106 | |
Lieutenant
257
Rep 437
Posts |
Quote:
|
|
Appreciate
0
|
04-08-2020, 01:17 AM | #107 |
Second Lieutenant
56
Rep 294
Posts |
My car stinks . But it doesn’t bother me really. Only if the car is idling for a while. My setup is aa headers, custom secondary delete, BMW pe mid pipe with a vibrant ultra quiet resonator welded in, pe muffler. Let me tell you the vibrant quieted a lot of the rasp out. If I were to sell my pe muffler and just place exhaust piping there I bet it would be quieter. Lol
|
Appreciate
0
|
04-08-2020, 03:58 AM | #108 | |
Colonel
3764
Rep 2,738
Posts |
Quote:
Coming to a red light with your window a down. (After you have stopped for a few seconds the exhaust wave catches up to the car and you smell it inside the car for about 10 seconds before it seems to mostly dissipate.) If you have the car running and go to put something in the trunk.
__________________
|
|
Appreciate
0
|
04-08-2020, 12:07 PM | #109 | ||
Lieutenant Colonel
287
Rep 1,710
Posts |
Quote:
__________________
DONE: Seibon CF Hood, M3 Rep, MSport rear w/DD CF Diffuser, M3 Rep Skirts, Seibon CSL trunklid, Forgestar F14 18s w/Michelin PSS, Eisenmann catback, AA Headers, BPC Stage 2, Charcoal Delete+revMotor+AFE Drop In filter
FUTURE MODS: LED headlights, CF rooftop, M3 Suspension Conversion, Dinan CAI Mod |
||
Appreciate
0
|
04-08-2020, 12:53 PM | #110 | |||||
Lieutenant
257
Rep 437
Posts |
Quote:
Quote:
how do you guys pass inspection with the headers for no cats at all? I'm just worried about that. If that's the case I might need to keep stock ones to swap out when inspection comes. I was also looking at the Supersprint HFCs but that might have to wait till I do my suspension work first and I haven't had much luck finding anyone's experience with those would a muffler shop be able to fabricate high flow cats so I can have the best of both worlds? I'm also afraid my car will be overly loud with my current set up
__________________
Mods Done: AA Exhaust/Headers | 3SIM | MILVs | StageFP Dyno Tuned | Euro Box Intake Swap | LCI Blackline Tailights | OEM Euro Bi-Xenon Swap from Halogen | Rear Bumper M-Sport Swap | Rear PDC Retrofit | BMW OEM CF Diffuser/Spoiler | BMW Front Aero Kit | Supersprint Sec 1 Cat Delete Straight Pipes
To Do: Ohlins R n T Suspension | Front/Rear Sway Bars | M3 Front Control Arms/Bushings Eventually: AT -> MT Swap (!?) |
|||||
Appreciate
0
|
Bookmarks |
|
|