N54 Exhaust Burble XDF Tables

[JohnDaviz]

We changed the value to 00 and nothing happens

 

[carabuser]

No burble at all? Or just not very aggressive?

Increase the duration to 3 seconds then do a log with both banks lambda reading. You should see the lambda reading stay down until the 3 seconds has elapsed then it will return to 234. I can then also see what the timing is doing.

 

[JohnDaviz]

i will try. but as of now i can confirm there is no burble at all while the same settings on my car did what was shown in the video in the past post.

 

[KClemente]

i will try. but as of now i can confirm there is no burble at all while the same settings on my car did what was shown in the video in the past post.

I gave up on mine and settled with clean crackles after a while on my I8A0S.

Duration works as intended, but timing never goes below -5° which makes me think that it’s a torque request thing.

 

[corbanistan]

I think there are a few tables that need to be changed as well. There is a table that stops delayed PUC at a certain speed, and that speed is fairly low stock.
I uploaded my XDF to GitHub for the public to use, go ahead and grab it. It should have more tables for you to play with.
https://github.com/Corbanistan/BMW-N54-Tuning-Resources
Sorry for the undetailed response, I've been busy all day. I'll take a more in-depth look later.
Again, there's definitely a way to get this working as it's working for my E93. I get nice overrun on shift (6MT) and deceleration.

 

[JohnDaviz]

We figured something else going on. When changing the tables the car is loosing all boost suddenly.

This is before changing to burble and burble during shifts


after

 

[carabuser]

Looks like the incorrect ignition table to me. Probably the one for external requests not the overrun ignition table.

This is the correct one:

 

[corbanistan]

Try enabling PI safety in MHD settings before flash.

 

[Snertz]

Getting some weird behavior, burble duration is as expected at 2.5k but it decreases as revs approach 3k despite tables being set as shown below. At 3k+ there's only a very short burble/pop, anyone else run into this?

The burble box is unchecked in MHD, tq reduction by ign is 00, tried enabling PI safety but no noticeable difference in behavior.

 

[carabuser]

Getting some weird behavior, burble duration is as expected at 2.5k but it decreases as revs approach 3k despite tables being set as shown below. At 3k+ there's only a very short burble/pop, anyone else run into this?

The burble box is unchecked in MHD, tq reduction by ign is 00, tried enabling PI safety but no noticeable difference in behavior.

View attachment 69812

It's because your XDF is wrong.

With my XDF your bin looks like this:

You need to sort by column instead of row.

 

[Snertz]

It's because your XDF is wrong.

With my XDF your bin looks like this:
View attachment 69819

You need to sort by column instead of row.

Ah, I must have missed that when copying from the XDF shared on post 68 to my own one. Thank you for checking, much appreciated!

 

[Sava666]

It's because your XDF is wrong.

With my XDF your bin looks like this:
View attachment 69819

You need to sort by column instead of row.

How can we enable it in standstill? by replacing speed and 600 row? What is the unit of temperature in Y axis?

 

[ansch]

Do these tables still work with the new MHD+ enabled xdf? With the new xdf, there is a global burble table as well as multi-map based burble tables. I've tried plugging in some of these numbers and turning off the burble option at flash time, but not getting much burble happening.

 

[Zetra]

Do these tables still work with the new MHD+ enabled xdf? With the new xdf, there is a global burble table as well as multi-map based burble tables. I've tried plugging in some of these numbers and turning off the burble option at flash time, but not getting much burble happening.

For louder pops and bangs you need to add negative timing, the bigger the number (-10 is not loud as -30 Will be but carefull, if you have Catalitycs Converters on they can explode, is obvious is a bigger bang
I dont remember what was the toggle that prevents that table to be used but is something like Torque reduction

 

[studio54]

Just read the whole thread, nice

@carabuser you said the way MHD slider/option implements burbles is different and sounds crappy compared with your tables, is it still the case in 2023 or they now use your tables ?

In the XDF with MHD+ Suite, we can set burbles (duration and timing) in tables of the 4 slots, but will it be different than ticking burbles in flashing options and setting them in the menu ?

If so, on your first post, you show an equivalent of medium setting, I am about to flash this for my I8A0S and aiming 1 to 1.5sec of medium/medium +:

Is it enough negative timing to get results for I8A0S ? just touched the upper right area like your example.

Thanks

 

[carabuser]

Just read the whole thread, nice

@carabuser you said the way MHD slider/option implements burbles is different and sounds crappy compared with your tables, is it still the case in 2023 or they now use your tables ?

In the XDF with MHD+ Suite, we can set burbles (duration and timing) in tables of the 4 slots, but will it be different than ticking burbles in flashing options and setting them in the menu ?

If so, on your first post, you show an equivalent of medium setting, I am about to flash this for my I8A0S and aiming 1 to 1.5sec of medium/medium +:

View attachment 77955


Is it enough negative timing to get results for I8A0S ? just touched the upper right area like your example.

Thanks

Yes, MHD use these tables now instead of the old method.

There is an additional table that limits timing in overrun that I haven't added yet. It was a 2D table in all the old ROMs but as of INA0S they changed it to 3D. I'll add that to this topic when I get time as without that table you'll be quite limited unless you have a Z4 as a base BIN.

I don't really know what settings MHD puts in for the slider now. But you can just gradually reduce the timing by 0.5 until you're happy.

 

[BEAT_ITN54]

Yes, MHD use these tables now instead of the old method.

There is an additional table that limits timing in overrun that I haven't added yet. It was a 2D table in all the old ROMs but as of INA0S they changed it to 3D. I'll add that to this topic when I get time as without that table you'll be quite limited unless you have a Z4 as a base BIN.

I don't really know what settings MHD puts in for the slider now. But you can just gradually reduce the timing by 0.5 until you're happy.

any update on he extra tables?

 

[Winny_N54]

Hi guys,

I have the same issue that @JohnDaviz . i have disabled Burble option in MHD and i used the map of burble timming but i think that it is not used. The burble is not aggressive. My burbles Duration working but not timing. Its stuck at -9° Max While i target -14 / -15°.
i have tried to activate and deactivate Tq Reduction but burble not work like MHD Medium. My duration is 1.3

1 - What to activate or deactivate in the bin to validate "Burble Ignition timing" really ??
2 - I would then like to be able to fix rpm MAX at 5500rpm for the burbles

 

[Zetra]

Hi guys,

I have the same issue that @JohnDaviz . i have disabled Burble option in MHD and i used the map of burble timming but i think that it is not used. The burble is not aggressive. My burbles Duration working but not timing. Its stuck at -9° Max While i target -14 / -15°.
i have tried to activate and deactivate Tq Reduction but burble not work like MHD Medium. My duration is 1.3

1 - What to activate or deactivate in the bin to validate "Burble Ignition timing" really ??
2 - I would then like to be able to fix rpm MAX at 5500rpm for the burbles

In latest versions of mhd burble dont work properly with custom tunes, i reported that earlier but i got no answer

Use 3.05 to make them work properly

 

[Winny_N54]

In latest versions of mhd burble dont work properly with custom tunes, i reported that earlier but i got no answer

Use 3.05 to make them work properly

Ok Thanks @Zetra

With version 3.05, i should reactivate the cursor in MHD app or i could use my table of burble timing ??