[Falafel Combo]

Finally picked my car up yesterday with the new MPE installed. My expectations were kind of low after reading some of the reviews from other members here saying how underwhelming it is and how they wish it were louder.


Here are my quick and dirty impressions, from inside the cabin, with all windows rolled down:


At start up and idle with a warm engine, you would be hard pressed to hear any difference. Kind of disappointed in that. You constantly want to be reminded that your MPE is there when you start up the car. Well, that affirmation is totally absent here. Almost no noticeable distinction from the stock exhaust at all.


Cold start is glorious, but then again the stock exhaust would sound nice too.


Under 2,000 revs, again, very quiet. Almost difference at all.


Once you climb to 2500 or 3000 RPM you really start to hear the new exhaust and the sound that I am getting is distinctly different than my stock exhaust. It sounds excellent. Can not describe it, but while driving around town I recall yelling "ARE YOU KIDDING ME?!! This is awesome!!!". Lol!


Over 5000 RPM you really hear it scream! Again, it sounds incredible under load and heavy acceleration! I'm sure bystanders would be even more impressed. Very happy with the "performance" sound, although yes, at idle and lower revs it can easily be missed.


It easily passes the "Starbucks test". When I pulled up to Starbucks, the heads turned in my direction right away. I noticed the "looks" I got from the guys and gals sitting outside sipping lattes. The looks ranged from sincere admiration, to the interested, and then the "weird, why does that car sound so frickin awesome??!" and lastly the "Uugh, this guys car is sooo obnoxious! I lost my focus and now I can't finish writing this Huffington Post comment section reply". Lol!!! I realized the sad truth that the MPE sounds much better from outside the car than it does on the inside.


I love the chrome tips. I debated getting the carbon fiber ones, but with my black diffuser the chrome ones contrast better and stand out more. They also stick out of the rear a hair more than the stock ones, which again is a subtle difference but gives them such a nice sporty look and brings the eyes attention to the exhaust.


I debated springing the extra money for the Akrapovic, but could not justify the money. At less than half the price, the BMW MPE is a no brainer. Especially that I am CPO and the MPE has no warranty questions what so ever. And to be quite frank, the Akrapovic did not sound like a night and day difference from the MPE. It sounds different, but not necessarily "better". "Better" is always in the eye of the beholder. It is more exclusive for sure.


The sheer possibility that my MPE will sound even better once it has been broken in, gives me a tickle down in my pants. I can't wait!






.

[m6pwr]

Is there a difference in sound when you go from Comfort to Sport or Sport+?

There's supposed to be some kind of flap that opens when you go into Sport, giving a louder sound. Was your MPE port installed?

[Nowayman1]

Great to read your impressions and to hear that you're happy with your well earned upgrade!! This write up really makes me think about what I should do to my new car.

This may be a really stupid question but I shall ask away anyway...

I am picking up my new 428i from BMW welt in Munich early July and was wondering if it's possible to put a 435i twin exhaust on a 28i engine and then install the twin M performance diffuser?

Great write up and thanks for sharing!!!!

[Gio72]

Originally Posted by Nowayman1

Great to read your impressions and to hear that you're happy with your well earned upgrade!! This write up really makes me think about what I should do to my new car.

This may be a really stupid question but I shall ask away anyway...

I am picking up my new 428i from BMW welt in Munich early July and was wondering if it's possible to put a 435i twin exhaust on a 28i engine and then install the twin M performance diffuser?

Great write up and thanks for sharing!!!!

If it's possible, consider that my 435i stock exhaust (never used, because I installed MPE at the delivery of the car) is on sale

Congrats to Alpinweiss 335i! As he knows, I cannot share his satisfaction because my MPE is the UE version (product number ending with 339), that sounds "sad"...

[BmwFlooner]

Any chance for some in-cabin sound clips? I'm waging this same battle between MPE and Akro....

[.BMW.]

Great write up, glad you like the new sound!

[rallybull]

Originally Posted by Gio72

If it's possible, consider that my 435i stock exhaust (never used, because I installed MPE at the delivery of the car) is on sale

Congrats to Alpinweiss 335i! As he knows, I cannot share his satisfaction because my MPE is the UE version (product number ending with 339), that sounds "sad"...

I might have missed it, but what exactly is the UE version and how can someone buying a new MPE make sure to avoid it?

[300hp]

Mine is fully broken in now and I am happy with the sound. I can hear it over my HK sound system

It's loud enough on start up and when driving slow. When driving slowly (Sunday driving mode) it's best to keep it in Eco pro and comfort that's what I have observed. Beyond 40 mph you can go to sport+ for the best sound.

Do you have PPK? that adds another dimension to the sound. PPK + MPE equals happiness

[Gio72]

Originally Posted by rallybull

I might have missed it, but what exactly is the UE version and how can someone buying a new MPE make sure to avoid it?

Don't worry: as written on RealOEM.com, in USA (and in Canada, for 8AT as far as I remember) it's only available US version ("340" the last 3 number of the product code).
I know that BMW is trying to omologate the 340 version in Europe (in the rest of the world!) instead of 339 version...
I think they differs for the materials inside the muffler.

[botis1028]

I don't have any experience with the stock exhaust because my car came with the MPerformance exhaust stock. There is definitely a difference when you put it in the 3 different modes, you don't hear it all that much in comfort unless you are above 4K RPM. It makes a good sound when you down and upshift in Sport and Sport+. It also has a great sound at idle if you are outside the car - it purrs.

[OUGrad05]

Man that white with the tint is quite a looker

[shivaswrath]

You know it deepens up after several thousand miles...?

[Falafel Combo]

Originally Posted by shivaswrath

You know it deepens up after several thousand miles...?

I can't wait! Actually I can ... it's pretty sweet already.

[Falafel Combo]

Originally Posted by m6pwr

Is there a difference in sound when you go from Comfort to Sport or Sport+?

There's supposed to be some kind of flap that opens when you go into Sport, giving a louder sound. Was your MPE port installed?

I'm sure there is an audible difference in the different modes, but to be honest it was not one of the things I gave much attention. The one thing I did notice which was kind of odd is that in Comfort mode you hear some of the burbles and pops that you would only get in Sport/+ with stock exhaust. My exhaust was installed at my local dealership, not the port. I have 18,000 miles on my car.

[Falafel Combo]

Originally Posted by Nowayman1

...

This may be a really stupid question but I shall ask away anyway...

I am picking up my new 428i from BMW welt in Munich early July and was wondering if it's possible to put a 435i twin exhaust on a 28i engine and then install the twin M performance diffuser?

Great write up and thanks for sharing!!!!

Of course it's possible. It's just a lot of work. I'm sure it would look pretty sweet too.

[Falafel Combo]

Originally Posted by 300hp

...

Do you have PPK? that adds another dimension to the sound. PPK + MPE equals happiness

No PPK yet. I'm taking my time and enjoying one thing at a time.


I know this is controversial, but I'll say it anyway. My butt dyno is registering a power bump with the MPE alone. Not sure how to explain it. It's not much, but it feels as if my 335i now has either:

a. Slightly more power
b. Engine revs more freely or less restricted


It feels like the revs climb faster than before, and that the car is a tad more eager to accelerate. Is this even possible? Is it possible that the stock exhaust "chokes" the engine to where it puts the performance at a disadvantage?

[Falafel Combo]

Originally Posted by OUGrad05

Man that white with the tint is quite a looker

Originally Posted by ss0803

Great write up, glad you like the new sound!

[Falafel Combo]

My wife is totally clueless around cars. Completely! Not a single clue.


Yesterday she asks "what's wrong with your car? Is it broken?" I asked why. She says ... "It sounds kind of loud!" In my head i'm thinking: Yessssss!.


There you have it ladies and gents. From a totally objective observer, the MPE "sounds kind of loud" before it has even been broken in. Lol!

[Falafel Combo]

One last thing. Again, from inside the cabin with all the windows rolled up, I could barely notice the MPE. I think that is a factor of the cabin insulation, not the MPE. It is a bit disappointing. You really have to roll the windows down to hear anything at all. Perhaps it will get better once it's been broken in.


Fake noise induction anyone? Truthfully, I wouldn't mind it right now.


The one thing I truly appreciate about the MPE so far is the balance. You can tell that this MPE was very carefully engineered and the sound was deliberately and meticulously crafted to match the n55 engine. The "car sounds" I would get before the MPE were mostly engine noises (which is great), but little-to-no exhaust note. Something was missing. Now it is actually quite balanced, where I still get to enjoy the inline 6 noises, but also am constantly assured by MPE with the accompanying deep growling, exhaust back pressure pops and burbles. It's rarely ever where you just hear a loud exhaust note that would overtake the engine noise. The exhaust here plays second fiddle to the engine and induction noises. I like that. I believe that is one of the reasons why this exhaust SHOULD NOT sound much louder. Why would you want to drown out the beautiful n55 noises with a loud exhaust. It wouldn't make much sense to me and I'm sure I would not have preferred that.


It's really cool when I drive into my neighborhood pulling up to my garage, I usually leave the car in first gear (I have the 6MT), and just let off the gas as I approach my drive way. It starts to pop and burble and I just think it's totally badass and a bit immature at the same time!

[Falafel Combo]

Originally Posted by BmwFlooner

Any chance for some in-cabin sound clips? I'm waging this same battle between MPE and Akro....

I wish. I don't think I have the proper equipment. Unfortunately though, not much sound from the MPE penetrates the cabin unless you roll down all the windows.

[Gio72]

If our 435i had the ASD (Active Sound Design) of M135i and M235i, the inside cabin sound would be perfect!

[300hp]

Originally Posted by alpinweiss 335i

No PPK yet. I'm taking my time and enjoying one thing at a time.


I know this is controversial, but I'll say it anyway. My butt dyno is registering a power bump with the MPE alone. Not sure how to explain it. It's not much, but it feels as if my 335i now has either:

a. Slightly more power
b. Engine revs more freely or less restricted


It feels like the revs climb faster than before, and that the car is a tad more eager to accelerate. Is this even possible? Is it possible that the stock exhaust "chokes" the engine to where it puts the performance at a disadvantage?

See what you can make of this. This is my old car with PPK and no MPE vs my new car, on this day the new car only had MPE, PPK was installed the following day. The new car had 10 miles on it and the old car had over 1500 times more miles. Lol.

As you can see I had given up on the msport exhaust tips. Man I hated those things. The mperformance tips are way cleaner