VIDEO: Pre-Production M4 Exhaust Start and Revs (CLEAR)

[gtfalve]

As someone who's been driven in an F80 M3, I think everyone will be pleasantly surprised by the exhaust note on this car. While I agree that this video doesn't sound very good, actually driving in a warmed up M3 sounds amazing. It's got a very throaty sound to it with a pretty noticeable turbo noise as well. I can't wait until everyone starts taking delivery of these

[marcus321]

Originally Posted by solstice

It's easy to forgive the exhaust sound on pre E9X M3s due to the fantastic induction noise which is actually much more important for the experience of driving the car. The problem with the F8X is that exhaust note is all we have in terms of natural sound since the induction noise is electronically amplified through the speakers. It's hopefully very well done since it's what we need to put our faith in. There is no way I'm ripping out a brand new quality system built by Akra and tuned by BMW M and spend a couple of grand on another system.

Akrapovic built the OEM exhaust for the M3/M4? Im curious now, I couldnt find anything on it doing a quick search.

[phrozen06]

it's gonna be a helluva summer when these things hit the streets.

[PABrian]

One thing that should be very important to know is that when a modern BMW is cold, especially an M car, the ECU is really gimping gas pedal response. That's why in parts you can hear it revving to a point and holding there, like a rev limiter, but at a much lower RPM. You can throw the pedal to the floor from idle and the engine will just slowly meander its way up the RPM range until the idle fuel cut. As others have said, flaps in the exhaust are closed too, which will make it sound a bit anemic.

Nobody should be taking this video to be in any way indicative of how the car sounds when at operating temperature and under load.

[bradleyland]

Originally Posted by gtfalve

As someone who's been driven in an F80 M3, I think everyone will be pleasantly surprised by the exhaust note on this car. While I agree that this video doesn't sound very good, actually driving in a warmed up M3 sounds amazing. It's got a very throaty sound to it with a pretty noticeable turbo noise as well. I can't wait until everyone starts taking delivery of these

Can you offer any comments on that strange high-pitched whistle-pop sound in the recording. It sounds like a microphone frequency response clip to me, but I'm curious if you can hear it in person.

[e39>all]

Originally Posted by OttosBMWBrian

One thing that should be very important to know is that when a modern BMW is cold, especially an M car, the ECU is really gimping gas pedal response. That's why in parts you can hear it revving to a point and holding there, like a rev limiter, but at a much lower RPM. You can throw the pedal to the floor from idle and the engine will just slowly meander its way up the RPM range until the idle fuel cut. As others have said, flaps in the exhaust are closed too, which will make it sound a bit anemic.

Nobody should be taking this video to be in any way indicative of how the car sounds when at operating temperature and under load.

I thoroughly hope you're right. The track videos do sound much better but I'm still concerned. I'm also very curious as to why the f83 track video sounds better overall and lacks the farting sounds that are in the f80 track vid. Maybe they listened to all the bitching and tweaked it at the very last minute

[swanson]

Originally Posted by OttosBMWBrian

One thing that should be very important to know is that when a modern BMW is cold, especially an M car, the ECU is really gimping gas pedal response. That's why in parts you can hear it revving to a point and holding there, like a rev limiter, but at a much lower RPM. You can throw the pedal to the floor from idle and the engine will just slowly meander its way up the RPM range until the idle fuel cut. As others have said, flaps in the exhaust are closed too, which will make it sound a bit anemic.

Nobody should be taking this video to be in any way indicative of how the car sounds when at operating temperature and under load.

How cold could it have possibly been in California? lol. These are modern cars that warm up very quickly. Its not like the car sat overnight in a cold climate and then was started.

[PABrian]

Ambient temps can be "cold" enough, and 10-20 seconds isn't nearly enough to warm up to proper running temps, even if ambient is 90 degrees. The car needs to be driven to get up to temp remotely quickly. Or you could let it idle for 15+ minutes, but that's never a good idea.

[Dog Face Pony Soldier]

Heard the exhaust at low RPMs today at the NYIAS... Sounded better than this video might suggest.

[TeinBMW]

I'm not digging that exhaust note. It's sounds really bad.

[positiveions]

Originally Posted by aus

Please show me another vid of the exhaust sound that's better. Give me some hope it really doesn't sound thus bad.

.

Some videos makes the exhaust more raspy. Other videos sounds like the clip in this thread.

This is as good as it gets. Don't expect a V8 sound.

[MrCsquared]

Originally Posted by gtfalve

As someone who's been driven in an F80 M3, I think everyone will be pleasantly surprised by the exhaust note on this car. While I agree that this video doesn't sound very good, actually driving in a warmed up M3 sounds amazing. It's got a very throaty sound to it with a pretty noticeable turbo noise as well. I can't wait until everyone starts taking delivery of these

You're making the wait harder.

Thanks though haha

[brian1225]

My dealer called me today and told me they had the new M3 in with a BMW rep. Unfortunately I did not have the time today to cruise down to check it out. But he was telling me that with the mode settings of the car(comfort ,sport , and sport plus) the exhaust note changes and is the loudest in sport plus. He said the BMW rep demonstrated this reving the vehicle and in sport plus the vehicle sounded amazing. Is this true?

[Fr1zGum]

If you get a chance to check out the car in person, pls make a video of exhaust sound in different modes. Hope, this is true))

[Eau Rouge]

OP, you didn't specify who was your "dealer". Porsche dealers say this about the 911's exhaust in the context of settings. Are you talking about a BMW dealer? If so, which one.

[Lups]

I just need to know, will my neighbors like me, or will the status quo be held. If they start liking me, I will need the help to make the car louder. I can't stand small talk, and confusing them by answering to the hi how are you line is getting old.

And by answering, I will go in to details if needed to avoid an other small talk session.

[M8 JTD]

I can confirm it's true - As per my post earlier in this thread:

http://f80.bimmerpost.com/forums/sho...d.php?t=972184

Originally Posted by M4 JTD

+ It depends what engine mode the car is in - That must have been the start-up default of "Efficient".

I recently got to start one up and I have to say that the YouTube clips really don't do it justice + they all sound very different. One reason for this is that the butterfly valves in the active exhaust system are mapped and controlled by the individual M Engine Dynamic Control modes. Even at idle / blipping the throttle whist stationary (i.e. no engine load) you can really hear the difference in each mode – “Efficient” is understandably muted however I thought “Sport Plus” was particularly good and nothing like the sound in that clip.

[Velon]

Lovely, belive it will sound good in Sport + mode.
But im a hopelessly positive guy

[Wah]

Originally Posted by JaySM3

It's true. I see a rep often in the long beach area. It gets mildly louder and it burps, but I think it's definitely going to need the MPE. My friend recorded a clip in 4K hd of it taking off again on 2nd street in long beach. (If anyone knows how upload videos in full quality message me so I can upload and post it to the forums)

Upload to youtube and post a link

[gtr]

Can't beat the V8 sound, with the turbo on a 6 cylinder they can probably only do so much. It may sound bad but I'm sure it'll sound awesome on the inside with the active sound speaker fixes the noise.

[Thurman Murch]

When I got in the current 335i perf edition I would always put the car in sport plus before starting just like I push m button on my e92m into sport plus before starting

Not sure why the dealers wouldn't already know that or keep it in comfort to start

Sucks that comfort is default on new cars

From the evidence at hand, at the very basic the perf exhaust is prerequisite

I wouldn't trust the dealers opinion without first hand evidence

The safety car sounds like what the new car should sound like at the very least

But hope remains

[Ezio]

I can't buy a car that sounds worse then my current one. But I will want something faster. I wonder if they are still putting v8s into z06s.