NO Burble, NO Crackle, NO Pop, WHY???

[djw007]

I've gotta say i do like my car, however the lack of any sort of exhaust dynamics is a massive disappointment.

I've come from an F30 335I and the exhaust burble, overrun, and character of that car leaves the M3 for dead. (NOTE: I did have an MPE on the F30)
HOW is this possible? At what point did all the engineers and executives at BMW stand behind an F80 prototype and say "yeah, that's it, that sounds so sweet, everyone is going to go nuts over this"... I cant imagine that ever happened!!

It really is hard to believe considering they have engineers assigned to the development of the cars exhaust and sound. Even the ASD sounds dreadful, if your going to fake it at least make that sound nice!!!

SO, what do BMW go and do next after selling thousands of M3/4's over the first couple of years? They release the competition pack!! And low and behold.. the desired exhaust sounds magically appear.

What i find really disappointing is the fact that the exhaust dynamics are pretty much a matter of tuning, this i'm sure could of been easily achieved from day one.

Why did they hold this back?

I thought i was buying the ultimate BMW sports car, i like many others just assumed it was going to sound incredible, like an actual sports car. IT DOESN'T, and i'd love to know WHY?

[jeff@autocouture]

Originally Posted by djw007

I've gotta say i do like my car, however the lack of any sort of exhaust dynamics is a massive disappointment.

I've come from an F30 335I and the exhaust burble, overrun, and character of that car leaves the M3 for dead. (NOTE: I did have an MPE on the F30)
HOW is this possible? At what point did all the engineers and executives at BMW stand behind an F80 prototype and say "yeah, that's it, that sounds so sweet, everyone is going to go nuts over this"... I cant imagine that ever happened!!

It really is hard to believe considering they have engineers assigned to the development of the cars exhaust and sound. Even the ASD sounds dreadful, if your going to fake it at least make that sound nice!!!

SO, what do BMW go and do next after selling thousands of M3/4's over the first couple of years? They release the competition pack!! And low and behold.. the desired exhaust sounds magically appear.

What i find really disappointing is the fact that the exhaust dynamics are pretty much a matter of tuning, this i'm sure could of been easily achieved from day one.

Why did they hold this back?

I thought i was buying the ultimate BMW sports car, i like many others just assumed it was going to sound incredible, like an actual sports car. IT DOESN'T, and i'd love to know WHY?

All comes down to preference and tuning. We unlock burble with a tune. Its just the OEM design of the vehicle. On my F80 when i had it i had MPE + DP and the thing sang a beautiful note but i never wanted it to burble or backfire. The M3/4 is an excellent car but when was the last time a manufacturer hit the nail on the head with the entire populations desires?

[mray]

I know where you are coming from. I think you should be able to get some cracks and burbles with the installation of a Mid Pipe which remove secondary cats, I would go that route as its the cheapest without going for a whole new exhaust..

[CanAutM3]

They kept the crack, burbles and pops for the Competition Pack.

[VF-Engineering]

Originally Posted by djw007

I've gotta say i do like my car, however the lack of any sort of exhaust dynamics is a massive disappointment...

What i find really disappointing is the fact that the exhaust dynamics are pretty much a matter of tuning, this i'm sure could of been easily achieved from day one.

Why did they hold this back?

We have a Certified HEX Tuning Dealer in Australia who can fix this for you with our
HEX Tuning - Features ONLY - Software File.

You can even go one step further and get our Stage ONE, which is all of the 'Features'
with the benefit of added power! (60-70HP and 90-100TQ, at the wheels!)

Here's a glimpse at the features offered with our software, which are the most authentic
and closely representative of the features found on the M4 GTS model available:

[Fugazii]

If you buy a AMG priced at $100K you don't get it as well! My 911 Turbo modded with straight pipes is more quiet than my current M4 what can I say?

[CaryTheLabelGuy]

OP, I 100% agree.

The non-ZCP F8x should have had the aggressive overrun AND M Sports exhaust (ZCP exhaust) from the beginning. The S55's exhaust note/tone wouldn't have gotten such a bad rap from EVERYBODY (especially press) had BMW spent more time on the exhaust note and tuning.

The M2 has plenty of overrun burble (not as aggressive as the F8x ZCP/GTS) as does the M235/240i, 335/340i with Performance/Sound Package and the base M3/M4 doesn't?

I'm very thankful I have a ZCP M4, I doubt BMW will ever offer a ZCP DME retrofit, unfortunately.

[egalley]

Just buy the M Performance exhaust. You'll get great burbles with no added tune!

[Blksnowflake]

Originally Posted by egalley

Just buy the M Performance exhaust. You'll get great burbles with no added tune!

No you won't. I have an MPE, no burbles or overrun. It does sound nice and deep..but not what the OP is referring which is the one thing I hate as well.
Not interested in unlocking DMEs and risking warranty issues.

[G1n Mast3r]

Originally Posted by Blksnowflake

No you won't. I have an MPE, no burbles or overrun. It does sound nice and deep..but not what the OP is referring which is the one thing I hate as well.
Not interested in unlocking DMEs and risking warranty issues.

I probably will, after my warranty ends :P

But to answer the OP, I like the burbles and wish I had them but now that unlocking DME's has provided less than adequate results from dealers flagging and causing warranty issues, I'll stay away for now. An exhaust helps a little bit, as it makes the stock Overrun much more noticeable, it's still is not a substitute for tune.

[CaryTheLabelGuy]

Originally Posted by G1n Mast3r

I probably will, after my warranty ends :P

But to answer the OP, I like the burbles and wish I had them but now that unlocking DME's has provided less than adequate results from dealers flagging and causing warranty issues, I'll stay away for now. An exhaust helps a little bit, as it makes the stock Overrun much more noticeable, it's still is not a substitute for tune.

The stock overrun is almost non-existent.

[Blksnowflake]

Originally Posted by CaryTheLabelGuy

The stock overrun is almost non-existent.

More than likely referring to the F8x queef/fart on acceleration.

[DavidGP]

Tons of burbles and crackles with DP's and JB4, valves open driving through parking lots. Sounds natural too, not forced and overdone.

[edwinm3]

my 15' didn't burble but my 16 burbles and sometimes backfires. both had akra evo installed. Car is not a ZCP and no DPs.

[Jimjamz]

Originally Posted by Blksnowflake

No you won't. I have an MPE, no burbles or overrun. It does sound nice and deep..but not what the OP is referring which is the one thing I hate as well.
Not interested in unlocking DMEs and risking warranty issues.

I have the MPE and definitely get the burbles and overrun once the engine has warmed up a little. It sounds great.

[M-Pilot]

ZCP with MPE is the best combo IMO

[djw007]

Seems to me a lot of people are disappointed by this.

It's unfortunate there's not a simple fix, for me i certainly don't want to risk an AM Tune and a voided warranty.

The exhaust option is probably best but they are just ludicrously overpriced!

Maybe BMW will see to this with a software update and some goodwill for its loyal customers and early adopters. But i definitely wont be holding my breath.

[G1n Mast3r]

Originally Posted by CaryTheLabelGuy

The stock overrun is almost non-existent.

That's true. I'll agree with that it's nothing compared to ZCP or GTS, but I can clearly hear overrun. Albeit it could me just me though. My AWE Nonres does crackle and pop ever so slightly, But as CaryTheLabelGuy says it's basically nonexistent.

[jwzimm]

I think it is kinda funny we are complaining about lacking a behavior that is actually an undesirable effect. Any noise made during overrun is due to unburned fuel igniting in the exhaust system. This is not how an internal combustion engine is supposed to work. The overrun burbles and pops were common in carbureted and older port injected engines because the metering of fuel was less controlled. Our engines are high precision direct injected affairs which would prevent that kind of waste. Any overrun noises that are added to the S55 will be the result of artificially changing the tune to make it less efficient.

P.S. The "fart" that the S55 makes is actually the result of an anti-lag system designed to keep the turbos spooled during gear changes. If we really wanted the absolute best performance from the engine you would get constant farting during overrun rather than little burbles.

Just seems funny to me.

[neilum]

Originally Posted by jwzimm

I think it is kinda funny we are complaining about lacking a behavior that is actually an undesirable effect. Any noise made during overrun is due to unburned fuel igniting in the exhaust system. This is not how an internal combustion engine is supposed to work. The overrun burbles and pops were common in carbureted and older port injected engines because the metering of fuel was less controlled. Our engines are high precision direct injected affairs which would prevent that kind of waste. Any overrun noises that are added to the S55 will be the result of artificially changing the tune to make it less efficient.

P.S. The "fart" that the S55 makes is actually the result of an anti-lag system designed to keep the turbos spooled during gear changes. If we really wanted the absolute best performance from the engine you would get constant farting during overrun rather than little burbles.

Just seems funny to me.

Personally speaking, I would prefer a more exotic sound to the exhaust and as silly and tacky as it sounds, burbles/cracks help with that. The car should stand out in the way it sounds. It stands out in every other way, looks/performance etc..

I bought a special car, I would like it to sound like one.

[Arcades]

It is all preference.

I prefer not catching unwanted attention from everyone, including cops and douchebag drivers.

It is nice to have the option but I don't want my M4 to sound like a F-Type. I don't like the crackling and burbling, it gets irritating for me.

[SROC3]

I've heard the burbles in person...not too much of a fan. But i guess it's loudness and frequency can be controlled by whatever tune it's on. I have an AWE non-res exhaust (which does remove the secondary cats) and my "burble" is perfect with NO tune I don't have a ZCP M4 or any tune. Sounds great! I have, however, also heard a stock ZCP car and it does sound pretty good too.