[cicadalex]

Yeah, just got the M Performance Exhaust installed on my F30 328i.
There are some pros and cons but in general this exhaust is awesome.
It is noticible difference to the stock exhaust.

I had uploaded a video for reference.
The exhaust has been installed for about 200km, and the charateristic of the sound changed a bit. When it first installed, it sound not much different at idle/<2000rpm, but it growl like crazy at 2500-3500rpm... it feels like a surge of angry sound.
After 200km, the thing goes smoother and linear now, the idle and low rev give you a little bit tasty bass, and when you step on the throttle to 2500-3500rpm it shouts too. (It feels that it shouts a bit quieter then when I first installed, maybe I get used to the louder sound already? haha)

So anyone know, for how long it will be fully broken in, and will it sound different?

GOODs:
- Nice looking ///M Tip
- Nice Cold-Start Sound
- Subtle and High Class Sporty sound, not just barely loud
- burble and popping sounds are nice!
- Quiet when you are cruising, Louder when you want it to be sporty!

BADs:
- Not very loud enough if you want a loud exhaust
- when it goes to Sport Mode or High Rev, it sounds closer to the stock exhaust
- Not feel of gain in performance
- I WANT IT SOUNDS LOUD LIKE COLD-START ALL THE TIME EVEN WHEN I START THE CAR WARM!!!

[slmdgee]

yeah I know what you mean! Wait till something comes out!

[larryzhou]

wish we can retrofit ASD

[topcat87]

It's still not 100% loud becos it's new. Once it's broken in it will be much louder.
A quick way to do this is to drive it like u stole it for a week

[mcalc55]

Great video. I pick up my Msport 328 Wednesday with the perf exhaust and can't wait. So breaking in with more miles will actually make it sound louder? I'll post some of mine as well, particularly the interior sound as that seems to be missing from a few m perf exhaust posts

[slmdgee]

Get catless downpipe and youll be good. I got a video of my car with my 4inch catless downpipe fully straight pipe.. WOW WAS IT LOUD!! ILL POST A VIDEO

[black_bug]

great review. Mind if i ask how much it cost in HK?

[fthirty]

sounds good to me.. not too loud and def way better than the weak stock sound.

[cicadalex]

it costs about 1025usd here....

[black_bug]

Originally Posted by cicadalex

it costs about 1025usd here....

Thx man. Thinking of getting one in HK and ship it over to ShenZhen,but the price difference is not that much as I expected.

[sfr002]

Thanks!

Do you have audio/video from inside while driving?

[JSillaway]

Originally Posted by cicadalex

Yeah, just got the M Performance Exhaust installed on my F30 328i.
There are some pros and cons but in general this exhaust is awesome.
It is noticible difference to the stock exhaust.

I had uploaded a video for reference.
The exhaust has been installed for about 200km, and the charateristic of the sound changed a bit. When it first installed, it sound not much different at idle/<2000rpm, but it growl like crazy at 2500-3500rpm... it feels like a surge of angry sound.
After 200km, the thing goes smoother and linear now, the idle and low rev give you a little bit tasty bass, and when you step on the throttle to 2500-3500rpm it shouts too. (It feels that it shouts a bit quieter then when I first installed, maybe I get used to the louder sound already? haha)

So anyone know, for how long it will be fully broken in, and will it sound different?

GOODs:
- Nice looking ///M Tip
- Nice Cold-Start Sound
- Subtle and High Class Sporty sound, not just barely loud
- burble and popping sounds are nice!
- Quiet when you are cruising, Louder when you want it to be sporty!

BADs:
- Not very loud enough if you want a loud exhaust
- when it goes to Sport Mode or High Rev, it sounds closer to the stock exhaust
- Not feel of gain in performance
- I WANT IT SOUNDS LOUD LIKE COLD-START ALL THE TIME EVEN WHEN I START THE CAR WARM!!!

I just added the cat less downpipe yesterday to my M exhaust and its just the right sound I think you are looking for. Ill post a video in the next few days.

[bcl0328]

Originally Posted by cicadalex

I WANT IT SOUNDS LOUD LIKE COLD-START ALL THE TIME EVEN WHEN I START THE CAR WARM!!!

pop the spring wire out of place and then zip tie the flap open

[jrortiz]

It's there any sound difference in running the car in sport or confort?

[lawgone]

Originally Posted by fthirty

sounds good to me.. not too loud and def way better than the weak stock sound.

+1...way better than stock

[cicadalex]

Originally Posted by JSillaway

I just added the cat less downpipe yesterday to my M exhaust and its just the right sound I think you are looking for. Ill post a video in the next few days.

Thanks! and i am so looking forward to it!!
I hope it sounds better at idle/low rev without losing performance.

Have you guys heard of the E92 and F30 335i stock exhaust? I haven't heard of the F30 in person but I have heard of the E92 335i stock. it sounds so nice in low rev/idle...deep note!
Is it because of the start/stop technology? warm starts sounds very unnoticible for F30 328i, is there the same issue for F30 335i??

[cicadalex]

A clip for you guys showing cold start, Stock vs M Performance

[Bricheun]

Mine sounded exactly the same - cold start is the only thing I like about it. Zero performance gain.

Note:
Sport mode and Comfort mode the valve is closed when warm and normal driving.
ECO mode the valve is open and sounds much sportier. There is definitely something wrong here and wish they can fix this via a code. i.e. sport mode should be open 100%.

[mike@x-ph.com]

Congrats

[larryzhou]

Originally Posted by Bricheun

Mine sounded exactly the same - cold start is the only thing I like about it. Zero performance gain.

Note:
Sport mode and Comfort mode the valve is closed when warm and normal driving.
ECO mode the valve is open and sounds much sportier. There is definitely something wrong here and wish they can fix this via a code. i.e. sport mode should be open 100%.

have you tried disconnect the spring which connects the flap and the motor?

[rs277]

Hi All,

So I had my //M Performance Exhaust installed about two weeks ago and just wanted to say I'm pretty happy with it. It could be a tad louder but I don't mind how it sounds since I didn't want something that would wake the neighbors every-time I started the car in the morning. I have 800 miles on it since installed and I'm not sure if I'll get any louder at this point ( now louder then when I first got it ).

As the OP has stated it does sound best between 2500-3500 rpm's and the burble and popping sounds it makes when you're letting off the gas is great. In ECO mode it does sound better but I can't stand driving in this mode for to long. Don't really hear the exhaust notes as much in Sport mode which is kind of downer .

Here's a quick video I recorded if anyone wants to hear what it sounds like at Cold Start ( sounds the best ) and while driving in comfort mode.

Video http://youtu.be/-WfCcqm9MiY

How does one post a video?

[jrortiz]

Thanks for the video, my should arrive in a couple of days . Can't wait to have it install.