06-25-2020, 04:49 PM | #1 |
Second Lieutenant
292
Rep 289
Posts |
S55 Exhaust Sound - Different midpipe - Massive improvement
So apparently Active Autowerke has developed a midpipe that solves the awful exhaust note issue caused by the S55. Just saw this video posted and now I hope they make this work on the M2C.
https://store.activeautowerke.com/co...ength-mid-pipe Last edited by Dasnub; 06-25-2020 at 04:56 PM.. |
06-25-2020, 04:59 PM | #2 |
Colonel
1860
Rep 2,104
Posts |
Very long thread on the M3/4 boards:
https://f80.bimmerpost.com/forums/sh....php?t=1675268 Active are actively developing this for the F87 Bottom line: For the M2, it didn't fit. TopGear Motorworks has a midpipe + axleback system for the M3/4. It sure does clean things up nicely, doesn't it? |
Appreciate
0
|
06-25-2020, 05:25 PM | #4 |
First Lieutenant
283
Rep 320
Posts |
A forum member is running the prototype EL midpipe from Active on his M2C. The thread and sound clips can be found at:
https://f87.bimmerpost.com/forums/sh...1696302&page=6
__________________
E90->F30->F80-F87->G80->G87
|
Appreciate
0
|
06-25-2020, 05:33 PM | #5 | |
Captain
724
Rep 929
Posts
Drives: 2019 F87 M2C, 2023 G87 M2
Join Date: Mar 2018
Location: North America
|
Quote:
|
|
Appreciate
0
|
06-25-2020, 07:23 PM | #6 |
Colonel
1860
Rep 2,104
Posts |
|
Appreciate
0
|
06-25-2020, 08:33 PM | #7 |
Lieutenant Colonel
2690
Rep 1,977
Posts
Drives: 2020 M2C HS & Ferrari Roma
Join Date: Sep 2014
Location: Sydney, Australia
|
Yes it is interesting! would be great to see the final product of the EL midpipe for the m2
__________________
2020 M2 Competition | Hockenheim Silver | 437M Wheels / 763M Wheels | RHD | 2NH Brakes OEM M2 CS Steering Wheel | MP Carbon Steering Wheel Trim | MP Pedals | MP Dash | MP Interior Kit OEM M2 CS Bonnet | M Performance Coilovers | MP Rear Spoiler | MP Rear Diffuser| Perl Carbon Front Lip | Remus Race Exhaust |
Appreciate
0
|
06-25-2020, 09:02 PM | #9 |
Second Lieutenant
292
Rep 289
Posts |
“ An inline 6 engine naturally has an evenly spaced exhaust pulse which results in a more smooth and full sounding noise. However, the twin turbo setup of the S55 engine while producing addition power has created a sound which sounds more like 2 independent inline 3's competing for noise than the throaty sound one would expect. The variance between the lengths of the front and rear down-pipes of almost a foot and a half creates unevenly spaced pulses so that when the merge in any form of crossover system whether stock, x-pipes, double x-pipes, single mid-pipe or rear-section solutions. Since the sound waves are moving at the same rate when they exit the system, these crossover sections are simply creating a higher pitched sound resulting in the annoying sound some have referred to as a weed eater sound. The current systems allow the banks to merge unequally pulsed sounds and after much research and testing (from many BMW experts) it was determined that equalizing the length of the exhaust pipes before mixing was a solution to this sound problem.”
|
Appreciate
1
KevM2723.50 |
Post Reply |
Bookmarks |
|
|