Exhaust Note For 2016 F8x

[IrvineTim]

I have seen a few youtube videos and one post in here comparing the exhaust note between the 15/16 F8x. Not enough video or,not enough information to actually determine if there is a difference. The lucky few that have taken delivery of their 2016 F8X, is there a difference in the exhaust note?? Post a video or chime in and put this burning question to bed.

[CaryTheLabelGuy]

Originally Posted by thoevelk

I have seen a few youtube videos and one post in here comparing the exhaust note between the 15/16 F8x. Not enough video or,not enough information to actually determine if there is a difference. The lucky few that have taken delivery of their 2016 F8X, is there a difference in the exhaust note?? Post a video or chime in and put this burning question to bed.

Honestly, this has been discussed ad nauseum in the other thread. I'm not sure it needs another thread for discussion.

[IrvineTim]

i must have overlooked the answer to the question then.

[DBV]

Yes, they DO sound different. Not to spark another debate, but the BMW specialists at the BMW Welt in Munich actually brought this up to me when I was taking delivery (apparently an American with native German language skills is rare). They mentioned that while the part #s were the same, the exhaust was redesigned to provide a more "aurally pleasing" sound. I'm sure this is a result of the numerous reviews, videos and comments stating a displeasure in the sound of the car. So, to conclude, it is a different sound. How radically different I can't say, as I never owned a 2015. But having heard both back to back there is a difference. Negligible some might say, but different nonetheless.

[YasM3]

It does not sound one bit different than a 15.... We have had a ton of 16's come through the shop over the past few weeks. They all sound identical on cold starts, hot starts, etc etc. The videos you cannot get an accurate representation of what it sounds like. The difference of someone standing a few feet further than another youtube video changes the way the car sounds alot. In person, exactly the same.....

[TRZ06]

SO... all these threads and still conflicting info. on if it is different or not.

Gotta love car forums, a lot said, nothing accomplished, LOL

Happy Labor Day all!!!

[YasM3]

The problem is. People are trying to compare videos which do not accurately represent what it sounds like in real life. I can take 2 2015 m3s. Side by side and video them on cold starts using 2 different devices and they will not sound the same. In person they sound identical. My ears dont lie. We have had 5 or 6 16s come through the shop and they sound exactly like my 15 and every other 15 i have heard, worked on and driven.

[CaryTheLabelGuy]

They sound just like my '15. I'm not hearing a difference.

[supremepower]

We had a '16 M4 in the shop last week. Honestly, it sounds like they found a better valve mechanism. The 15' and 16' sound the exact same once the valves are open

[IrvineTim]

Thank you!!!!

[CaryTheLabelGuy]

Originally Posted by supremepower

We had a '16 M4 in the shop last week. Honestly, it sounds like they found a better valve mechanism. The 15' and 16' sound the exact same once the valves are open

This is certainly plausible. I think what really changed was the flap algorithm and maybe the flaps themselves. But with both sets of valves open, they sound exactly the same.

[kitw]

The early 2015s had that valve that rattled like crazy when it was cold. Drove me bananas. I had an April build 2015 M3, and my February 2015 build 2015 M4 sounds way different on cold start, but mainly because that stupid valve doesn't rattle and sound like a tin car in a clothes dryer.

[Miamiboyca]

This thread has videos of cars taken side by side, same acoustics, same recording device.
http://f80.bimmerpost.com/forums/sho...8#post18547358

[dmk08]

Originally Posted by kitw

The early 2015s had that valve that rattled like crazy when it was cold. Drove me bananas. I had an April build 2015 M3, and my February 2015 build 2015 M4 sounds way different on cold start, but mainly because that stupid valve doesn't rattle and sound like a tin car in a clothes dryer.

This. They even replaced some ppls exhausts for this when the car was new.

[YasM3]

Originally Posted by Miamiboyca

This thread has videos of cars taken side by side, same acoustics, same recording device.
http://f80.bimmerpost.com/forums/sho...8#post18547358

I watched your vids and read the thread. Sounds like in vids 2/4 the valves were not opened. 2/4 sounds like closed valves VS 1/3 being open.

I have compared many 2016s to 2015s since I work for BMW and hear zero difference in person. I can hear the difference in your videos but sounds more like valves open vs valves closed. Also on startup the DME changes parameters depending on conditions. I can have my car warm with valves open. Shut the car off and then turn it back on. Do a pull to 5000RPMS its raspy, wait a few mins do another pull to 5000 RPMS and its much different sounding, much deeper with less rasp. 15s and 16s sound the same.....

[Miamiboyca]

Originally Posted by darge82

I watched your vids and read the thread. Sounds like in vids 2/4 the valves were not opened. 2/4 sounds like closed valves VS 1/3 being open.

I have compared many 2016s to 2015s since I work for BMW and hear zero difference in person. I can hear the difference in your videos but sounds more like valves open vs valves closed. Also on startup the DME changes parameters depending on conditions. I can have my car warm with valves open. Shut the car off and then turn it back on. Do a pull to 5000RPMS its raspy, wait a few mins do another pull to 5000 RPMS and its much different sounding, much deeper with less rasp. 15s and 16s sound the same.....

You must not have read all the way. Video 3/4 the cars were running side by side for 5 minutes after run in Both cars were warm, valves open.

In my remarks I point out that the acoustics make a big difference. Both I and the other owner notices nothing different the first time, and then a difference the second time.

Either way, its still the human factor but appreciate the feedback.

[YasM3]

Originally Posted by Miamiboyca

You must not have read all the way. Video 3/4 the cars were running side by side for 5 minutes after run in Both cars were warm, valves open.

In my remarks I point out that the acoustics make a big difference. Both I and the other owner notices nothing different the first time, and then a difference the second time.

Either way, its still the human factor but appreciate the feedback.

Actually, I did not read all 7 pages. Just sifted through quick. Vids 1/3 actually sound better. If you say 1/3 are the 2015 and 2/4 are 2016, then people saying that 16s are deeper and throatier, are tone deaf for sure. Vid 1 is clearly deeper than vid 2, so that assumption goes right out the window.

However, you cannot control how the car sounds at startup. Even with valves open 2 cars "may" sound different. Even both with valves open. There are other events that occur, especially after startup even if its a hot start. VANOS positions, and timing events are different depending on the cars adaptations and what it wants to do which will cause the car to sound different.

I appreciate your attempts at comparing the 2, however, like I said, in person and I have compared them more than once, a 2015 and 2016 sound identical on cold, hot, warm starts, revving, etc. I hear no difference and I have very good hearing. Yours videos sound more like valves open vs valves closed.

My car on a cold start with valves open sound like Video one, cold start with valves closed sound more like video 2.

But like I said, exhaust sound changes based on a ton of different conditions, not just how long the cars were idling for.

Also in your vids 1 +2 when you tell your "revver" to put it in sport + you should also hear the valves open and clearly you do not hear them open. It should be a very noticeable change. You should be opening the valves prior to starting the car.

[Miamiboyca]

Gotta listen to 3/4 - I attempted to correct the mistakes of 1 and 2.

Those are a better comparison, but I hear you. Too many factors the worse of which is the human one. Thanks for info though.

I agree it's too close and so many factors but fun to speculate and point out to the 2016s ... Haha