M Performance Exhaust vs Akrapovic Evolution Exhaust

[TheIceStormOf06]

Originally Posted by Tony007

I have to believe that some of that aural awesomeness makes its way into the cabin.

Man, all these clips of the MPE makes me want to put it on the second the car comes in.

lol. Believe what you want. But it doesn't. Hear it for yourself. There is a reason the went with the ASD sound. Inside is well insulated.

[TheIceStormOf06]

Originally Posted by ikaoivan

Here is video that shows sound from inside with MPE. I think there is no difference. Or maybe LukasAT will undeceive us.

With Akrapovic, there is considerable difference of sound inside. I found it here.

Yeah. If you add down pipes. That's not just the EVO. Same thing with the MPE

[TheIceStormOf06]

Originally Posted by LukasAT

yes as I said the diffrence is not really noticeable and I think a mic cant even record it for me there is slightly more drone coming from the back

btw found another good comparison video from stock to MPE

Damn. MPE sounds awesome. Too bad it doesn't change the inside sound

[SuspectisHatless]

I wouldn't say it doesn't change the sound inside. I have had mine for two days now and I think its noticeably louder and deeper across a broad range of driving conditions. The real question is whether its worth it for what is often a modest change in sound quality (inside), which I can't answer although I knew that before I bought it. I think the difference is more pronounced under aggressive driving. Accelerating recently under an overpass it sounded like a gunshot echoing off the sides (with the windows fully closed), which is something I never noticed with the stock exhaust unless the windows were open.

[GOLFFRR]

Originally Posted by SuspectisHatless

I wouldn't say it doesn't change the sound inside. I have had mine for two days now and I think its noticeably louder and deeper across a broad range of driving conditions. The real question is whether its worth it for what is often a modest change in sound quality (inside), which I can't answer although I knew that before I bought it. I think the difference is more pronounced under aggressive driving. Accelerating recently under an overpass it sounded like a gunshot echoing off the sides (with the windows fully closed), which is something I never noticed with the stock exhaust unless the windows were open.

do you have DCT? if so how are the downshifts sound wise?

[tonymac1]

Originally Posted by SuspectisHatless

I wouldn't say it doesn't change the sound inside. I have had mine for two days now and I think its noticeably louder and deeper across a broad range of driving conditions. The real question is whether its worth it for what is often a modest change in sound quality (inside), which I can't answer although I knew that before I bought it. I think the difference is more pronounced under aggressive driving. Accelerating recently under an overpass it sounded like a gunshot echoing off the sides (with the windows fully closed), which is something I never noticed with the stock exhaust unless the windows were open.

Is it a lot louder when cruising under efficient mode? (low rpms)

[SuspectisHatless]

Originally Posted by GOLFFRR

do you have DCT? if so how are the downshifts sound wise?

I do. If you are referring to the slur that has shown up in some videos, I think that is there, but I can't really tell for sure inside the car.

[SuspectisHatless]

Originally Posted by tonymac1

Is it a lot louder when cruising under efficient mode? (low rpms)

Yes but not in huge way. Just idling the car is a little louder and deeper.

[GOLFFRR]

Originally Posted by SuspectisHatless

I do. If you are referring to the slur that has shown up in some videos, I think that is there, but I can't really tell for sure inside the car.

I am referring to when you downshift under load does the exhaust bark? or is it quite like it current is when you down shift

[Meanie]

Originally Posted by GOLFFRR

I am referring to when you downshift under load does the exhaust bark? or is it quite like it current is when you down shift

It definitely barks on downshift under load. The MPE really is amazing.

[Bob MG]

Originally Posted by ikaoivan

Here is video that shows sound from inside with MPE. I think there is no difference. Or maybe LukasAT will undeceive us.

With Akrapovic, there is considerable difference of sound inside. I found it here.

Can't compare as one has DPs and a tune which completely changes the sound and engine characteristics

[Falafel Combo]

Originally Posted by LukasAT

yes as I said the diffrence is not really noticeable and I think a mic cant even record it for me there is slightly more drone coming from the back

btw found another good comparison video from stock to MPE

[Style666M]

Here is video of MPE. Sounds great and also I noticed a difference of sound from inside. It's deeper from inside and IMO great. We were talking that there is no change from inside but now I believe that is.

[CanAutM3]

Originally Posted by TheIceStormOf06

lol. Believe what you want. But it doesn't. Hear it for yourself. There is a reason the went with the ASD sound. Inside is well insulated.

Originally Posted by TheIceStormOf06

Damn. MPE sounds awesome. Too bad it doesn't change the inside sound

Have you heard it in person yourself to make such comments .

I can confirm that the MPE does change the sound inside the cabin. Active sound pipes in intake noise, not exhaust noise. The exhaust noise you hear inside the cabin is the actual exhaust noise, so changing the exhaust will change what it sounds like.

The MPE brought a much deeper tone to the sound inside the cabin, it also has more growl to it which is more reminicent of the signature BMW I6 sound IMO. Videos do not capture this well.

[LukasAT]

Originally Posted by CanAutM3

Have you heard it in person yourself to make such comments .

I can confirm that the MPE does change the sound inside the cabin. Active sound pipes in intake noise, not exhaust noise. The exhaust noise you hear inside the cabin is the actual exhaust noise, so changing the exhaust will change what it sounds like.

The MPE brought a much deeper tone to the sound inside the cabin, it also has more growl to it which is more reminicent of the signature BMW I6 sound IMO. Videos do not capture this well.

Yes I can agree it changes also the sound inside the cabin! and I also agree that videos dont capture that very good ... see my video

[Meanie]

Originally Posted by LukasAT

Yes I can agree it changes also the sound inside the cabin! and I also agree that videos dont capture that very good ... see my video

+1

There is a definite difference in the cabin, both windows up or down you can hear a much richer sound oozing into the cabin. The best fun is when you have the car in sport/sport+ with the windows down and can hear how mad this exhaust really is. Videos really do this exhaust no justice.

[LukasAT]

just one question but the valves from the exhaust open after some minutes after start up in sport/sport+ .. doesnt matter if cold or warm?! I mean when I start up the car and put it into start the valves are still closed ..

does someone know why? I thought they are electronical

[Meanie]

Originally Posted by LukasAT

just one question but the valves from the exhaust open after some minutes after start up in sport/sport+ .. doesnt matter if cold or warm?! I mean when I start up the car and put it into start the valves are still closed ..

does someone know why? I thought they are electronical

On startup from what I have experienced the valves will open up on a full cold start, however if the motor is even a little bit warm they will close immediately and soften the tone all the way down.

[LukasAT]

Originally Posted by Meanie

On startup from what I have experienced the valves will open up on a full cold start, however if the motor is even a little bit warm they will close immediately and soften the tone all the way down.

yes thats right, on startup they are open anyway ... but afterwards they close and in the first minutes you cant controll them via the sport button ... after some minuts you can open/close it via the button ... is this only my car?!

[Meanie]

Originally Posted by LukasAT

yes thats right, on startup they are open anyway ... but afterwards they close and in the first minutes you cant controll them via the sport button ... after some minuts you can open/close it via the button ... is this only my car?!

The throttle button if in efficient, sport or sports+ does not directly open and close the valve. Rather it determines at what part of throttle engagement the valve will open up. In sport and sport+ the valve will open more frequently than that of when in efficient mode. Only a "Golf tee" mod can keep the valve open at all times. Also remember the valve closes to prevent drone at certain rpm.

Hope that answers your question.

[LukasAT]

Originally Posted by Meanie

The throttle button if in efficient, sport or sports+ does not directly open and close the valve. Rather it determines at what part of throttle engagement the valve will open up. In sport and sport+ the valve will open more frequently than that of when in efficient mode. Only a "Golf tee" mod can keep the valve open at all times. Also remember the valve closes to prevent drone at certain rpm.

Hope that answers your question.

Yes I know that BUT as I said after start up .. in the first 2 minutes doesnt matter if warm or cold the valves open .. doesnt matter if you are in efficient or sport mode .. also in high rpm. after start up i put it in sport .. drive of and I can tell immediately after about 2 minutes when the vavles are finally open, but not from the beginning

[TheIceStormOf06]

Originally Posted by CanAutM3

Have you heard it in person yourself to make such comments .

I can confirm that the MPE does change the sound inside the cabin. Active sound pipes in intake noise, not exhaust noise. The exhaust noise you hear inside the cabin is the actual exhaust noise, so changing the exhaust will change what it sounds like.

The MPE brought a much deeper tone to the sound inside the cabin, it also has more growl to it which is more reminicent of the signature BMW I6 sound IMO. Videos do not capture this well.

Ok. Thanks. Great explaination. I stand corrected. Others here are confirming the same thing as well so it's not just perception. I do need to hear it in person. I drove the M5 with the comp pack and the exhaust and I was blown away it sounded so damn good. If I get the same vibe once I drive the m4 w/ MPE....go ahead BMW. Take my money.