[JohnnyHendrix]

I got the MPPSK installed yesterday and really like the sound but I have a hard time noticing the difference between the Comfort/Eco Pro and Sport/Sport+ sound profile despite being sure there is a difference. My dealer told me that the exhaust will get louder after around 1500 miles so maybe the difference will increase over time also.

[riskmaker76]

NO way...

Its a massive difference between Comfort and Sport/Sport+

If your not hearing a difference its broken, no programmed properly, etc.

Its like Normal BMW vs Ferrari --- literally that much of a difference

And yes it does get louder as you break it in...

You should have a drone between 2 - 4k on the high way in Sport/Sport+

If you dont then for sure something is wrong.

I heard the difference the moment the flap opened up... it takes about 3 minutes after setting it in sport and sport + for the valve to open..

Originally Posted by JohnnyHendrix

I got the MPPSK installed yesterday and really like the sound but I have a hard time noticing the difference between the Comfort/Eco Pro and Sport/Sport+ sound profile despite being sure there is a difference. My dealer told me that the exhaust will get louder after around 1500 miles so maybe the difference will increase over time also.

[NormanConquest]

Originally Posted by JohnnyHendrix

I got the MPPSK installed yesterday and really like the sound but I have a hard time noticing the difference between the Comfort/Eco Pro and Sport/Sport+ sound profile despite being sure there is a difference. My dealer told me that the exhaust will get louder after around 1500 miles so maybe the difference will increase over time also.

Was immedient for me but my car engine already had 30k when i installed it so that may have played a factor.

[Nebelhinten]

Go back to dealer and have them verify that MPPSK software was installed successfully. They should be able to provide a printout of the install report. Also, ask them to check that the flaps are opening when you switch to Sport. The difference in sound is very noticeable.

[JohnnyHendrix]

Does the flap open also in P and or N with the car running when you switch the modes with an immediate noise difference? Or only when driving. And is it opening immediately after entering Sport mode?

[Beek]

Start the car and immediately put it in Sport mode, the car is already loud because the waste gate is open on cold start and putting it in Sport will have no noticeable immediate effect. After thirty seconds or so the waste gate will close and quiet things down a bit, after about another minute the valves should open and you will definitely hear it. About once in every twenty cold starts the Valves won't open unless I give a little throttle input, again the difference is very noticeable. If this is not what you are experiencing take it back to the dealer as somethings not quite right. Good luck!

[JohnnyHendrix]

thank you Beek. I will try tomorrow.

[JohnnyHendrix]

Ok I feel relatively stupid :-D When I got the car I configured Sport mode to only stiften steering but not adjust the drivetrain to test it but never switched the setting back. Apparently this caused the flaps not to open in Sport mode as the drivetrain is basically not adjusting.

I configured Sport mode now to adjust both the steering and engine. Now the flaps do open and my god it is amazing :-D And they stay open but after switching from Comfort to Sport I do have to step on the gas just mildly.

[Nebelhinten]

Originally Posted by JohnnyHendrix

Ok I feel relatively stupid :-D When I got the car I configured Sport mode to only stiften steering but not adjust the drivetrain to test it but never switched the setting back. Apparently this caused the flaps not to open in Sport mode as the drivetrain is basically not adjusting.

I configured Sport mode now to adjust both the steering and engine. Now the flaps do open and my god it is amazing :-D And they stay open but after switching from Comfort to Sport I do have to step on the gas just mildly.

Good catch, didn't think of that one. Now that you have drivetrain configured you will also notice a significant difference between Sport and Sport+. Have fun!

[EricVR4]

Originally Posted by DrifterX

Did your dealer look at your car about that drone? I went in last week and they said they resolved the issue. Seems like the random knocking I was getting while in Sport+ is gone but I still have a really bad vibration/drone/resonance between 1,500rpm & 2,500rpm. It's so loud in the cabin that it takes away from the exhaust as well!

Hey all, new member here. Sorry to bump a 2 month old thread but DrifterX, did you ever get your issue with the vibration/resonance solved?

I recently came back to BMW and picked up a 2017 340i M Sport in Alpine White a couple weeks ago and got the MPPSK installed this past Saturday. I have the same issue with vibration/resonance inside the cabin between 1500-2500 rpm in lower gears, as load is increased. I haven't had a chance to get under the car and see if it's rubbing on anything since I know the clearances are tight but figured I'd check and see if you found a solution to yours since my problem sounds similar.

Worse comes to worst I'll just stop by the dealership and ask them to look at it but I guess I wanted to make sure that this isn't just a normal part of having the MPPSK. I'm ok with it being louder than the stock setup but like you said, it can get so bad inside the cabin that it takes away from everything and becomes an annoyance.

[DrifterX]

Originally Posted by EricVR4

Hey all, new member here. Sorry to bump a 2 month old thread but DrifterX, did you ever get your issue with the vibration/resonance solved?

I recently came back to BMW and picked up a 2017 340i M Sport in Alpine White a couple weeks ago and got the MPPSK installed this past Saturday. I have the same issue with vibration/resonance inside the cabin between 1500-2500 rpm in lower gears, as load is increased. I haven't had a chance to get under the car and see if it's rubbing on anything since I know the clearances are tight but figured I'd check and see if you found a solution to yours since my problem sounds similar.

Worse comes to worst I'll just stop by the dealership and ask them to look at it but I guess I wanted to make sure that this isn't just a normal part of having the MPPSK. I'm ok with it being louder than the stock setup but like you said, it can get so bad inside the cabin that it takes away from everything and becomes an annoyance.

I haven't had a chance to look underneath my car either - I'll do that in the next few weeks when I switch over to summer wheels/tires. Unfortunately, it's still there but I've kinda gotten used to it now - something tells me it may be normal.

I usually switch out of Sport+ if I'm driving at the lower RPMs now.

[EricVR4]

Originally Posted by DrifterX

I haven't had a chance to look underneath my car either - I'll do that in the next few weeks when I switch over to summer wheels/tires. Unfortunately, it's still there but I've kinda gotten used to it now - something tells me it may be normal.

I usually switch out of Sport+ if I'm driving at the lower RPMs now.

Ahh, ok. I'll try to get underneath it this weekend if I have time and see if it's rubbing on anything. I hope it's not just a part of it, but if it is then oh well....I'm sure I'll get adjusted to it since the car is pretty fun either way haha

[High Flier]

I don't think the vibration is normal, at least my car doesn't do it (any more). The dealer had to put it on the lift and adjust the exhaust pipe. This made a significant difference. I don't have any rattling, clanging, vibration, buzzing, etc. It's just pure exhaust sound.

[DrifterX]

Originally Posted by High Flier

I don't think the vibration is normal, at least my car doesn't do it (any more). The dealer had to put it on the lift and adjust the exhaust pipe. This made a significant difference. I don't have any rattling, clanging, vibration, buzzing, etc. It's just pure exhaust sound.

Sounds like I'll need to take a look at my exhaust myself because all my dealer told me was they've "resolved the issue" when I asked for details on how they fixed the issue after my visit...

[EricVR4]

Originally Posted by High Flier

I don't think the vibration is normal, at least my car doesn't do it (any more). The dealer had to put it on the lift and adjust the exhaust pipe. This made a significant difference. I don't have any rattling, clanging, vibration, buzzing, etc. It's just pure exhaust sound.

Originally Posted by DrifterX

Sounds like I'll need to take a look at my exhaust myself because all my dealer told me was they've "resolved the issue" when I asked for details on how they fixed the issue after my visit...

I was hoping it wasn't normal, but yeah before I go through the hassle of going back to the dealer for them to potentially tell me the same thing as you, I guess I'll just get under and check to see if I can see any signs of the exhaust rubbing anywhere. If I notice something obvious then I'll go show them and make them fix it.

[Beek]

This is a known issue with MPPSK where the exhaust pipe is mis-aligned during instalation. Take it back to dealer and have them make it right. I've not heard of anyone needing two trips to dealer for resolution, my guess is you're just the "lucky" one.

[riskmaker76]

I will be on the 3 trips... they kept thinking it was the seat.. now I see all this talk about the exhaust.. now I am convinced its the exhaust. PS - living with the rattle (on and off - mostly off and why so long) for almost a year

Originally Posted by Beek

This is a known issue with MPPSK where the exhaust pipe is mis-aligned during instalation. Take it back to dealer and have them make it right. I've not heard of anyone needing two trips to dealer for resolution, my guess is you're just the "lucky" one.

[Beek]

Originally Posted by riskmaker76

I will be on the 3 trips... they kept thinking it was the seat.. now I see all this talk about the exhaust.. now I am convinced its the exhaust. PS - living with the rattle (on and off - mostly off and why so long) for almost a year

I hope you're buying lottery tickets, you must be really lucky! Sorry you are having this trouble, got to be very frustrating!

I wonder if someone who's had the fix done could post a picture of where they had the contact between the exhaust and the car body? Might be of help to those still having problems.

[High Flier]

Originally Posted by Beek

I hope you're buying lottery tickets, you must be really lucky! Sorry you are having this trouble, got to be very frustrating!

I wonder if someone who's had the fix done could post a picture of where they had the contact between the exhaust and the car body? Might be of help to those still having problems.

I posted a picture in the thread titled "MPPSK Rattle": http://f30.bimmerpost.com/forums/sho....php?t=1424716

[DOCTOR.Y]

I like the comfort mode sound actually, sounds like a cow haha.

Sport mode I don't like the drone.

Most of the time I used comfort engine setting

[EricVR4]

Just as an update, I did end up taking the car back to the dealer and they did a slight adjustment on the exhaust. He said it was making a little bit of contact with the heat shield. Made a big difference though. I still get some minor vibrations at certain RPMs under certain load but it's usually only if it's in a higher gear and start accelerating....a quick downshift gets rid of the problem though. I guess that's just part of having an exhaust with no resonators anymore. I can live with it though, the car sounds better and better as I put more miles on the MPPSK

[namx747]

What settings were reset in iDrive after reprogramming??