View Poll Results: What is your exhaust setup & are you experiencing the raspy "tin can" noise issue? | |||
EL mid pipe (non-res) / stock axleback / no issue | 3 | 5.88% | |
EL mid pipe (non-res) / stock axleback / yes, my car has the same issue! | 16 | 31.37% | |
EL mid pipe (res) / stock axleback / no issue | 5 | 9.80% | |
EL mid pipe (res) / stock axleback / yes, my car has the same issue! | 3 | 5.88% | |
EL mid pipe (non-res) / aftermarket axleback / no issue | 6 | 11.76% | |
EL mid pipe (non-res) / aftermarket axleback / yes, my car has the same issue! | 7 | 13.73% | |
EL mid pipe (res) / aftermarket axleback / no issue | 4 | 7.84% | |
EL mid pipe (res) / aftermarket axleback / yes, my car has the same issue! | 7 | 13.73% | |
Voters: 51. You may not vote on this poll |
Post Reply |
|
Thread Tools | Search this Thread |
07-02-2021, 03:54 PM | #89 |
Second Lieutenant
180
Rep 214
Posts |
Hey guys, I just spoke to Mike @ x-ph. Firstly let me say Mike and Cynthia at X-ph are fantastic to work with and I'll definitely be buying more stuff from them.
Mike did offer to swap out my EL for a single midpipe since mine was unused/uninstalled. He left it up to me but also made a few important points and I ended up keeping the EL. It's being installed next week Tuesday. Here's what he told me: -First thing is, do you want the EL sound or not? I could swap for the single which will make it an improvement over stock...but I'll be missing the EL sound, which makes it sound like a non turbo engine. If you really want that deep non turbo sound at higher rpm, AA EL is the only way to go for now. -Yes cold start and 2kish rpm will haves rasp/drone. So the cold start is a temporary thing, and you can also code it out if you have the older M2C. I can't since mine was recently delivered and has not been cracked. But getting past the cold start is just a matter of waiting a few mins. Next if you drive in efficient mode, none of this is an issue. I do drive in efficient mode since it's a daily driver. I put it sport/sport+ if I want to go fast, in which case I'll be at higher rpm anyway. While this is not ideal, at least there are ways to get around it. So is this a faulty product? AA doesn't consider this a faulty product. It's not perfect, but it's really the only option we have at this point if we want that deep non turbo that doesn't like a weed trimmer. Lastly I'm tired of waiting, if I was to swap for the single I'd have to send mine back and cover shipping charges (which is fair), wait for them to get it on the west coast. They would then have active ship me the single and I'd end up waiting another 3 weeks. Summer is short where I am. So given all this I kept the resonated EL along with my Remus race back box. I'll post how they sound next week. |
Appreciate
1
HomoPirate84.00 |
07-02-2021, 04:10 PM | #90 | |
~Spyder
645
Rep 879
Posts
Drives: '19 M2C Hockenheim 6sp
Join Date: Oct 2008
Location: Previously on the Bundesautobahn
|
Quote:
You may be lucky: you have resonated EL and a different back muffler. This setup doesn't seem to be plagued by the 2k rpm raspiness as non rez EL and stock setup. I could be wrong, but with a clear sounding EL, you may not want to drive it in efficient mode, and open 'er up all the way: "beast mode, or bust"!!!!!
__________________
Skål från Sverige...via Texas y-all
|
|
Appreciate
0
|
07-02-2021, 05:45 PM | #91 | ||
Captain
1198
Rep 638
Posts
Drives: M2C
Join Date: Sep 2013
Location: Seattle
|
Quote:
I actually do (or did?) usually get crappy cold starts. In my thread I think I doubted someone's cold start video because it didn't sound bad. But then when I went to record mine …. It also sounded non-offensive. And I haven't been able to repro a shitty sounding cold start in the last week. I don't know if maybe it got better over time based either on mileage/use or if it's related to me having warmer weather in Seattle now. But it was consistently so bad at first that I got conditioned to expecting it to be bad. However - I have never experienced consistent rasps at ~2k once warm. Or at least I have noticed unpleasant sounds once warm (maybe VERY occasionally but not remotely near to consistent). I'm non-res so the resonator design change that happened this spring is unrelated. |
||
Appreciate
0
|
07-02-2021, 09:36 PM | #92 |
Captain
1198
Rep 638
Posts
Drives: M2C
Join Date: Sep 2013
Location: Seattle
|
Okay I made 2 videos. One showing cold start. Got "lucky" and finally got one where it shows the issue. Not as bad as I'm used to. Note that for the past week+ it hasn't been happening.
Pretty clear when it happens. Next video is once everything is warmed up and I'm trying to keep revs low while in Sport mode. This one is longer and boring but No_curebimmer I'd love if you could spot whether this sounds like yours or not? I think I hear some tinny noise at 1:12 and 3:20? Overall I'm not bothered by the sound in the second video. And the short pull at the end brings a smile to my face. I guess while making it I was constantly thinking how it didn't feel that natural. I'm not usually hanging out in sub-2k rpm to then be able to pass over to 2-2.3k. Car tends to cruise more towards 2.3k and up and so my daily driving is usually spent at ~2.3-3.5k. Main exception is of course rolling from a standstill (red light etc). But that's how second video starts and it sounded fine to my ears. Did it to yours? |
Appreciate
3
|
07-02-2021, 10:30 PM | #93 | |
Lieutenant Colonel
354
Rep 1,681
Posts |
Quote:
__________________
Current: ///M2C
G01 X3 xDrive30i Past: ///M2 997.1 Turbo ///M3 E92 |
|
Appreciate
0
|
07-02-2021, 10:43 PM | #94 | ||
Captain
1198
Rep 638
Posts
Drives: M2C
Join Date: Sep 2013
Location: Seattle
|
Quote:
But I can't tell if that's the sound people are talking about at 2k when warm…. |
||
Appreciate
0
|
07-03-2021, 08:59 AM | #95 | |
Private
47
Rep 89
Posts |
Quote:
|
|
Appreciate
0
|
07-03-2021, 05:25 PM | #97 | |
~Spyder
645
Rep 879
Posts
Drives: '19 M2C Hockenheim 6sp
Join Date: Oct 2008
Location: Previously on the Bundesautobahn
|
Quote:
So yes, in your start-up vid, the raspiness is clearly heard around say 10s and 20s marks for instance. This is EXACTLY the (or one of) troubling noise that is my primary concern. The other one is occasional 'pistol going off' at start up (still need to capture that on video)...but I could live with that if we can eradicate the low RPM one, which is more prevalent. I will say, or update, my findings as follows: if you're looking for the raspy/tinny sound, you will find it, however... - during normal driving conditions, the culprit raspy noise is harder to discern, primarily due to cats/engine being warm, road noise, closed windows, maybe radio on, etc. I went for a very spirited drive last night (>1.5hrs, always in Sport+) and my experience, again, mirrors @ESB's 2nd video. Yes, occasionally I heard it while taking off from a light, but it wasn't as pronounced... - primarily, the noise is very much evident (like in @ESB's 1st video) upon cold startup, and if you are 'focusing' on stationary revving the engine up to 2k RPM. Similarly, aggressively taking off from a stop light, occasionally the noise occurs. - revving up a warm engine, the raspiness occurs more around 1.5k RPM, not 2k like I originally reported Cliff notes: Q1: is the AA EL non resonated better than stock? A1: absolutely yes! Q2: is the resulting sound clean throughout the entire RPM band, especially on a warm engine? A2: no Q3: how can you duplicate the tinny/raspy noise? A3: either starting off, or stationary revving through 1.5k up to 2k RPM Q4: what else do I need to know? A4: the following use cases: 1. Sport or Sport+ modes (no issue for Efficient) 2. abrupt/fast acceleration. Seems that, at least in my controlled test cases, deliberate slow and controlled take offs don't exhibit the tinny rasp 3. very common for stock DPs and stock muffler and non-resonated EL midpipe 4. may be mitigated/minimized with aftermarket mufflers like Remus Sport/Race, AA valved or others (awaiting more feedback from other users) 5. not as pronounced for resonated AA EL midpipe...regardless of OEM muffler setup or not
__________________
Skål från Sverige...via Texas y-all
|
|
Appreciate
0
|
07-03-2021, 05:58 PM | #98 |
Lieutenant Colonel
354
Rep 1,681
Posts |
Would love to hear more videos of those with the resonated pipe to see if it helps reduce this sound.
__________________
Current: ///M2C
G01 X3 xDrive30i Past: ///M2 997.1 Turbo ///M3 E92 |
Appreciate
0
|
07-03-2021, 09:59 PM | #99 | ||
~Spyder
645
Rep 879
Posts
Drives: '19 M2C Hockenheim 6sp
Join Date: Oct 2008
Location: Previously on the Bundesautobahn
|
Quote:
Can it be cut/shorten to match up with the beginning of the muffler? The 2 end pieces that match up with the muffler are more or less parallel, just longer for the M3/4 platform. I've attached a picture of my F87 AA EL setup w/ stock muffler. I think it can happen, call up AA to verify (if you still have the m4 EL).
__________________
Skål från Sverige...via Texas y-all
|
||
Appreciate
0
|
07-04-2021, 12:42 PM | #100 | |
Private
47
Rep 89
Posts |
Quote:
|
|
Appreciate
0
|
07-04-2021, 01:10 PM | #101 |
~Spyder
645
Rep 879
Posts
Drives: '19 M2C Hockenheim 6sp
Join Date: Oct 2008
Location: Previously on the Bundesautobahn
|
So, while we all are trying to pinpoint a resolution or a a possible install culprit….can anyone who DOES NOT have the raspiness validate what a good installation is?
I posted a picture of my own AA EL non rez…nothing looks suspicious to me, but some suggested to check the welds, bolts clearance etc. Can anyone see something off or not kosher per se? I suspect everyone else's should be identical…
__________________
Skål från Sverige...via Texas y-all
|
Appreciate
0
|
07-04-2021, 09:51 PM | #102 |
Private First Class
97
Rep 110
Posts |
I am the lone vote thus far for EL non res and stock axle back. I hit that button by mistake on my phone. I have the same cold start issue but will say it is not a deal breaker. I either let the car warm up or just drive off very slowly for 1/4 mile, then it is gone. Perfect? No. Huge improvement over stock? Yes. I also am having the AA axle back installed tomorrow so I'll give an update after that.
__________________
Bill
2020 M2C 6MT SO |
Appreciate
0
|
07-04-2021, 10:19 PM | #103 |
Second Lieutenant
180
Rep 214
Posts |
Nice updates everyone. Look out for an update from me mid next week. Having the RESONATED AA EL installed with Remus RACE. Stock downpipes of course. Let's see if any issues of raspiness/tin can sound occur or not.
|
Appreciate
0
|
07-04-2021, 11:02 PM | #104 |
Private First Class
220
Rep 180
Posts |
Can you please post vids of your AA EL resonated with the Remus without burbles? I'm on the fence on ordering that setup or a Dinan catback with an AA EL resonated.
__________________
__________
2020 A/W M2C, 6 M/T, Executive Package, Moonroof Mods: 20% tints, Full PPF and Ceramic Pro, IND A/W reflectors, Remus Sport, AA EL (non-res), BMC Filters, BM clutch stop, ///M tire caps |
Appreciate
0
|
07-05-2021, 06:26 PM | #105 |
Captain
1029
Rep 692
Posts |
I can't wait for this
__________________
Vic
|
Appreciate
0
|
07-06-2021, 11:19 AM | #106 |
~Spyder
645
Rep 879
Posts
Drives: '19 M2C Hockenheim 6sp
Join Date: Oct 2008
Location: Previously on the Bundesautobahn
|
Hope everyone had an enjoyable 4th of July weekend!
I just reviewed this clip of a fellow F87 member @AM///M2C who has stock DPs, the non-rez EL + AA new valved muffler I didn't distinguish the raspiness around 1,5k or 2k RPM that the majority here are complaining about, so I'm thinking that adding an aftermarket muffler does help quite a bit? Thoughts, comments? Edit: just listen to this via headphones...much better/realistic/engaging vs. phone or laptop, and really, IMO, this is the best sound I have heard from an S55 motor. Sidebar: I could be mistaken, but is it possible that the burbles could somehow interfere with the raspy noise or somehow mask it? My burbles are coded off via BimmerLink. Do all of you who reported as having the rasp have burbles on or off?
__________________
Skål från Sverige...via Texas y-all
Last edited by No_curebimmer; 07-06-2021 at 11:31 AM.. |
Appreciate
0
|
07-06-2021, 11:59 AM | #107 |
~Spyder
645
Rep 879
Posts
Drives: '19 M2C Hockenheim 6sp
Join Date: Oct 2008
Location: Previously on the Bundesautobahn
|
Folks - if you're running stock DPs, non-rez EL + some aftermarket muffler/exhaust, please post vids.
@mike@x-ph.com: judging from the video that I posted above, it seems that having an axle back muffler significantly minimizes (some or most) raspiness. Probably you received this question quite a bit, but now that you're in tune (pun intended) with the concern on this thread...and given your experience since you are the DE FACTO F87 tuning vendor for us: can you recommend which muffler will best be suited to alleviate the raspiness we reported <2k RPM, while also improving the overall tone? IMO currently the only feasible/affordable options are: - Remus Sport: if you're looking for a louder/cleaner tone without being too bombastic, obnoxiously loud (especially if stock DPs) - Remus Race: it you want to be bonkers as most users have reported this is the loudest - AA new valved: this is still somewhat new product, but more users are getting this installed as a Remus Sport alternative - Dinan axle back - can this even be mated with the AA EL (resonated or not)? I guess one would have to remove the x-pipe that the Dinan comes with I am not really considering less desirable, common or affordable options like AWE, Akrapovich, Eisenman or Milltek.
__________________
Skål från Sverige...via Texas y-all
|
Appreciate
0
|
07-06-2021, 12:10 PM | #108 | |
Captain
1029
Rep 692
Posts |
Quote:
__________________
Vic
|
|
Appreciate
0
|
07-06-2021, 01:06 PM | #109 | |
Captain
1198
Rep 638
Posts
Drives: M2C
Join Date: Sep 2013
Location: Seattle
|
Quote:
His video is also from March which is around the time I got my midpipe. If you have a theory that perhaps the earlier batches are immune then that would apply to these videos as well :/ With all of that said, someone commented on my YouTube cold start video that they experience much less rasp at cold start with aftermarket muffler. So you indeed may be on to something but I'd caution against using this video as a proof point. |
|
Appreciate
0
|
07-06-2021, 02:37 PM | #110 | |
~Spyder
645
Rep 879
Posts
Drives: '19 M2C Hockenheim 6sp
Join Date: Oct 2008
Location: Previously on the Bundesautobahn
|
Quote:
With that in mind though...my baseline may be unique in that I can have the raspy noise regardless of cold or warm engine. Thus, if I can eliminate the raspiness once the engine/cats are warm, I will be golden.... Lastly, to eliminate that this wasn't an install issue, tomorrow I have an appt. with my indy BMW shop who installed my non-rez EL: I'll have them check for any clearance issues, bolts/brackets touching, exhaust leaks etc. I will post my findings... P.S. @ESB given the videos you posted a few days back, your setup sounds suspiciously similar to mine - so I take it back that you're no longer considered an early adaptor of the non-rez AA EL.
__________________
Skål från Sverige...via Texas y-all
|
|
Appreciate
0
|
Post Reply |
Bookmarks |
|
|