09-25-2020, 09:52 PM | #1 |
Private
23
Rep 93
Posts |
Is my M Akra Exhaust Defected
I have the M Performance Titanium Akra Exhaust on my 2018 M6 GC Compitition.
Coming from an M4 with M Performance Titanium Exhaust, it had a satisfying sound and enjoybale pops/crackles on downshifting. My current M6 M Titanuim exhaust I can barely hear it if the windows are up. I hear more of the engine sound. When the windows are down I can hear the rumpling but nothing more. Also, no pops on downshifting. Overall, I hearing the engine more than exhaust . Is the exhaust system defect? its still underwarranty with 16k Miles on. If this is how M Exhaust sound, what can I do to enhance the sound without voiding the warranty ? How can I get the pops/crackle sound upon shifting up and down?? Your feedback is highly apperciated.
__________________
comparison is the thief of joy
14 BMW 435ix 16 BMW M4 17 BMW X5 18 BMW M6 18 BMW M4 Competition |
09-26-2020, 02:03 AM | #2 |
Lieutenant General
4985
Rep 11,891
Posts |
It's subjective, but I assure you the MPE sounds way better than the MPE on a M4.
A few considerations, are you sure you have a MPE? Can you take a picture of the exhaust canister? Sounds crazy, but some people are confused about what comes on a competition package car. The MPE is not standard on a competition car. Here is a picture: https://f10.m5post.com/forums/showthread.php?t=914226 Also, your car may have ASD unplugged or coded out. And your M4 may have had ASD on. At least check this as well. I remember when I unplugged my ASD, The immediate reaction was the car's interior cabin was quieter and less boomy. However I could hear my exhaust pop. It only happens in certain situations, hard to duplicate all the time. I can tell you, I definitely can hear my exhaust. Windows down it just sounds amazing.
__________________
22 Phytonic/Coffee X5 45e (CoVID-free)
08 Speed Yellow 911 GT3 Sharkwerks 12 AW/Cinnamon X5d Sports Pkg (retired) 14 AW/Beige M6GC ZCP, MPE, V2 steering wheel, vorsteiner (retired) 08 SSII/Black E90 M3 (retired) |
Appreciate
1
Talaldinho23.00 |
09-26-2020, 12:28 PM | #3 | |
Private
23
Rep 93
Posts |
Quote:
I had the flaps coded to be open at all time when I first purchased the M6. Not sure if this ASD was disabled. would you recommend getting checked at the dealer ? any upgraded would you recommend to get a better aggressive exhaust? [IMG]undefined[/IMG]
__________________
comparison is the thief of joy
14 BMW 435ix 16 BMW M4 17 BMW X5 18 BMW M6 18 BMW M4 Competition |
|
Appreciate
0
|
09-26-2020, 02:13 PM | #4 |
New Member
7
Rep 27
Posts |
I felt the same way with mine also and then I got some catless downpipes and BM3 Stage 2 OTS tune.
__________________
2017 F82 M4
2014 F13 M6 |
Appreciate
1
Talaldinho23.00 |
09-26-2020, 07:43 PM | #5 |
Private First Class
68
Rep 125
Posts |
Well, you could cut the mufflers off and do a decent muffler delete... And then let me buy the akra mufflers from you.
|
Appreciate
1
Talaldinho23.00 |
09-28-2020, 04:03 PM | #6 |
New Member
8
Rep 6
Posts |
I've had this same question/issue. Turns out its the way the DME boxes are programmed, the new F90 M5 and M8 have upgraded DME Software to encode for pops and burbles but with the F06/12/13 platform you would have to flash the DME with an aftermarket tune to get the desired sound on downshifting or riding the clutch.
With that said, it does make a single pop for my very high in 2/3/4 gear if the throttle is released but I agree it doesn't sound like an M4/M3 with equivalent exhaust. On the M6, you would need BM3 stage 2 at the minimum to encode an aggressive burble otherwise stage 1 has a mild burble only. |
Appreciate
0
|
09-29-2020, 11:17 AM | #7 | |
Private
23
Rep 93
Posts |
Quote:
__________________
comparison is the thief of joy
14 BMW 435ix 16 BMW M4 17 BMW X5 18 BMW M6 18 BMW M4 Competition |
|
Appreciate
0
|
09-29-2020, 11:24 AM | #8 |
Lieutenant General
4985
Rep 11,891
Posts |
|
Appreciate
0
|
10-09-2020, 09:47 AM | #9 |
Lieutenant
135
Rep 443
Posts |
Flying Ace do you have DP's? Care to share which brand & type (celled/catless)-- and which tune you're running.
I have the Akra on stock components with the ASD disconnected -- I enjoy the sound, but need more oomph -- hence, downpipes. Just not sure which tune & DP's to pair the akra with to get the best sound. Appreciate the help. H |
Appreciate
0
|
10-09-2020, 01:03 PM | #10 | |
Lieutenant General
4985
Rep 11,891
Posts |
Quote:
|
|
Appreciate
0
|
10-11-2020, 09:59 PM | #11 |
Private
23
Rep 93
Posts |
Flying Ace hirkaismyname m6coupe
Guys, I apperciate the input... can I please get some directions on how I can get the exhaust to "pop,cranks,bangs" just more aggressive sound, without voiding the warranty. I have 2018 with extended warranty lol. |
Appreciate
0
|
10-12-2020, 04:49 AM | #12 |
Lieutenant
149
Rep 477
Posts |
thats only with catless dp, flash tune & it will void your warranty
__________________
|
Appreciate
1
Talaldinho23.00 |
10-15-2020, 01:19 PM | #13 |
Lieutenant
135
Rep 443
Posts |
Try gutting your OEM DP's, can't really void warranty if they can't see it. But it may require a tune, which BMW may catch if they put a scanner on it. Maybe you can get away with a piggyback, remove it before going to the dealer + flash back to stock.
Thoughts? |
Appreciate
1
Talaldinho23.00 |
Post Reply |
Bookmarks |
Thread Tools | Search this Thread |
|
|