[Freemorfeem]

I have catless downpipes and otherwise stock 335i M sport exhaust. No matter how I set the burbles settings, they’re barely noticeable and usually aren’t present at all.

Any ideas?

[Serf27]

It’s your muffler if the settings are correct.
You need to delete it or do the PE mod.


What RPM do you have the burble setting at?
Auto or manual?
Are you actually flashing the DME? Or just selecting options on the app?


I have catless DPs with PE muffler mod with burbles set at max at 2400 on my auto 335i.

During normal auto, they’re not noticeable.

DS mode, they’re a little noticeable.

In manual mode running the RPMs up and letting off the throttle brings pops.

Neutral revs have the clean/crispy pops.

[Freemorfeem]

Hey, thanks. I've attached screenshots of two variations of settings I've tried. The higher rpm seemed to give some slight burbles, but nothing like what I've heard from others running stock exhaust.

I am flashing the DME, stage 0 for now, almost ready to do 1+, then 2+.

I am 6MT.

[BSM n54iS]

Flash stage 1 already

[Serf27]

It’s probably your muffler.
Unbolt
Your down pipes from the exhaust and rev it to see if you get burbles.

Also the car has to be warm. I hey get anything when the car is cold.

[Freemorfeem]

Originally Posted by Serf27

It’s probably your muffler.
Unbolt
Your down pipes from the exhaust and rev it to see if you get burbles.

Also the car has to be warm. I hey get anything when the car is cold.

Interesting note on it burbling more when it's warm. Thanks.

If I want more burbles should I set it to a higher rev / rpm? And longer seconds or shorter?

thanks!

[Serf27]

I hear the best burbles when the car is warm but air temperature is cold.
I’ll check my settings and let you know what mine is at.

[TheMidnightNarwhal]

Originally Posted by Freemorfeem

Interesting note on it burbling more when it's warm. Thanks.

If I want more burbles should I set it to a higher rev / rpm? And longer seconds or shorter?

thanks!

Does it sound like it's resolved and sounds like other cars when fully warmed up or it still sounds muted?

The RPM setting is just the minimum where the burples start. I have it at 1200.

The duration is how long it burples/pops for. And aggressiveness is how loud/aggressive.

I'm fully stock exhaust wise and kind sounds like gunshots at 4.5k RPM. Although I have an IS so the IS exhaust but I doubt it makes a huge difference.

[Freemorfeem]

Originally Posted by TheMidnightNarwhal

Does it sound like it's resolved and sounds like other cars when fully warmed up or it still sounds muted?

The RPM setting is just the minimum where the burples start. I have it at 1200.

The duration is how long it burples/pops for. And aggressiveness is how loud/aggressive.

I'm fully stock exhaust wise and kind sounds like gunshots at 4.5k RPM. Although I have an IS so the IS exhaust but I doubt it makes a huge difference.

Yeah, that's what I've heard/seen on youtube. Burbles can get nasty! LOL. Not mine. What's "IS" exhaust?

Mine doesn't burble much even when warmed up. I've tried RPMs at 1K, 1200, 2200, and 2400.

I've tried medium and aggressive, as well as 1.5s and as long as possible.

And the engine is currently running great with new NGK plugs, coils, and index 12 injectors.

[TheMidnightNarwhal]

Originally Posted by Freemorfeem

Yeah, that's what I've heard/seen on youtube. Burbles can get nasty! LOL. Not mine. What's "IS" exhaust?

Mine doesn't burble much even when warmed up. I've tried RPMs at 1K, 1200, 2200, and 2400.

I've tried medium and aggressive, as well as 1.5s and as long as possible.

And the engine is currently running great with new NGK plugs, coils, and index 12 injectors.

The IS exhaust is kind of like the PE, but still has some slight difference apparently not to sure what they are. It's just a bit more open.

I guess at this point you'd have to do a video. Do this as a test, let the car warm up fully then at standstill floor it and let go when it's around 4.5k rpm it should be like gun shots. Also for the test put it othe maximum aggressiveness.

I'm curious because I had a friend who had a older E92 and he installed MHD and all and his burples were really silent even at max RPM so idk if it's the same situation. We never found the source of the issue and he sold the car but yeah. He did have some weird acceleration hesitations issue though but yeah. Idk if the muffler really does that much of a difference.

[Serf27]

I read some other threads where members say to drive the car through a few drive cycles or 10-20 miles. Others say to re flash it.

Mine worked right away.

I still think it’s your muffler.
I’d bet if you loosened the bolts on the Dow pipes to exhaust and revved it, you get the pops.

[Freemorfeem]

Originally Posted by Serf27

I read some other threads where members say to drive the car through a few drive cycles or 10-20 miles. Others say to re flash it.

Mine worked right away.

I still think it’s your muffler.
I’d bet if you loosened the bolts on the Dow pipes to exhaust and revved it, you get the pops.

Yeah, the first time I did it, the weather was warmer and I noticed small burbles right away. Since then, I've tried various settings by reflashing and really the burbles are barely noticeable.

Going straight pipes would sound wicked without a burbles tune, hahah.

I don't want to delete the muffler but I wouldn't mind having less of a muffler. Exhaust is just not where I'm putting my money right now.

I'm open to ideas though!

[Serf27]

Well obviously don’t leave the Down pipes loose.
I was just saying to try that in your driveway or around the block so you can verify it’s the muffler stopping the burbles.

You can cut the muffler off and have a shop weld a straight pipe for relatively cheap. But I don’t think it will sound good. Or do the PE mod if you know how to weld.

[ky0u]

Originally Posted by Serf27

I read some other threads where members say to drive the car through a few drive cycles or 10-20 miles. Others say to re flash it.

Mine worked right away.

I still think it’s your muffler.
I’d bet if you loosened the bolts on the Dow pipes to exhaust and revved it, you get the pops.

This is the case with me. Anytime I turn on my setting, it takes a few miles on an initial drive before it's consistent. And also seems to do it much better when the car is warmed up as well

[Fbo_n54sfv]

Originally Posted by Freemorfeem

Yeah, that's what I've heard/seen on youtube. Burbles can get nasty! LOL. Not mine. What's "IS" exhaust?

Mine doesn't burble much even when warmed up. I've tried RPMs at 1K, 1200, 2200, and 2400.

I've tried medium and aggressive, as well as 1.5s and as long as possible.

And the engine is currently running great with new NGK plugs, coils, and index 12 injectors.

I'm been experiencing the same thing over a year now. Did you ever figure it out?