Deceleration

valts42 · **Joined:** Wed Nov 14, 2018 4:03 pm **Posts:** 4

M52b25 absolute stock

r19 · **Posted:** Wed Nov 16, 2022 7:16 pm

e36_mafia wrote:

r19 wrote:

https://www.youtube.com/watch?v=zUJlVTMLoj0
So how about this one.

Does anyone know how its made? :oops:

It may not refer to "Deceleration" but looks interesting.

take a look at this , made with ms41 and romraider https://youtube.com/shorts/XXIWtxN1H74?feature=share
https://youtube.com/shorts/EMWiHbuhZoM?feature=share

Nice!
Will you share how you did that?

201Teo · **Joined:** Fri Jul 31, 2020 11:17 pm **Posts:** 1

Fabio wrote:

daniel_rs wrote:

Hello! I made popcorn on a friend's e36 323 car https://www.youtube.com/watch?v=dQAY3xW3fSE.
Firmware from e36 body version ms41.0, the car never had an air conditioner.
I wanted to make popcorn only when the air conditioner is on.
AC on - popcorn on
AC off - popcorn off
We connected the ground through a button on a 5 pin x20 connector. And fixed Fuel Restore - RPM and Ignition Retard - Decreasing TPS (Closed) to Fuel Restore - RPM (AC on) and Ignition Retard - Decreasing TPS (Closed) (AC on). When we turn on the button, the idle speed gets higher. In INPA, it shows that the air conditioner is on, but there is an error in the air conditioner relay. When the AC is on, there is no popcorn, the Fuel Restore - RPM map works, not the Fuel Restore - RPM (AC on).
How to make the map work (Fuel Restore - RPM (AC on) ?

Did You figure out the problem ?

I have been talking to a popular tuner for all ms4x platforms about tuning for AC on- popcorn on / AC off - popcorn off and I asked him about it specifically for ms41 for my 99 m3 and he said that it is not possible have achieve that, only the opposite (ac off - popcorn on / ac on - popcorn off). I too have tried to get pops only using the (AC on) tables but to no luck. Has anyone been able to achieve this successfully?

scout3221 · **Joined:** Wed Nov 13, 2019 11:17 am **Posts:** 2

Rafalszarek wrote:

I am trying to add pops and bangs to my e36 m52b20 ms41. It's my 14rd attempt and I'm only getting PF PF PF PF sound and little pops. I feel like I tried everything, I even tried to increase fuel dose by 0.30 but it sounds same as before.

Short clip showing my 'pops':
https://youtube.com/shorts/3VbFjoudRgE?feature=share

The popcorn is there, everything is correct. the exhaust is s***... that's all

XXXcinX · **Joined:** Sat Jan 09, 2021 4:56 pm **Posts:** 1

e36_mafia wrote:

Hello everyone ! I have been looking for a while at a good hard cut with fire for ms41 and i didnt find any information or video of it so i started trying things in my car and this is what i came with. I have to clearify that this is not good for the motor , dont give you more hps and its only for show. Sorry for bad english i’m from argentina. The car is a e36 m50b30 with m54b30 intake cam 258hp 326n.m

https://youtube.com/shorts/3HBp0Pl-A1M?feature=share
https://youtube.com/shorts/HwFykP3uTSg?feature=share

hi would you suggest what to change in the .bin file or what to change to get ak47 from the exhaust like in your videos. Or he uploaded his .bin file. Regards

r19 · **Posted:** Tue Feb 21, 2023 9:11 pm

After some time i got bored of Pnb and decided to just remove the rev hang of M52 MS41.0.
Followed pazzi88's tutorial for the Ignition retard step-size(ECT comp) which works well for M52B28 but looks like it doesn't work that good on M52B25 :roll:

I mean the rpm's drop fast on low and mid rpm's but when revving to rev limiter they still drop slow and the gas pedal feels like on and off button.
So has anyone fine tuned this for M52B25?

KNeuer · **Posted:** Fri Feb 24, 2023 6:25 am

i played with those values a lot too. went through many different iterations and with the settings as described in the thread the car behaved too jumpy in my opinion. It was getting annoying to drive very quickly and more or less went back to stock settings. for the high rpm rev hang did you try adjusting the - ignition retard - fast decreasing tps (closed) map - the high rpm settings?

r19 · **Posted:** Sun Feb 26, 2023 5:57 pm

I tried but nothing changed in my opinion. I am on stock again. I can't find sweet spot where there is no rev hang but the driveability is not affected.
I searched on the web and on bimmeforums a guy put 11mm socket in the hose of the IACV and says that eliminated the rev hang(he restricted the air to the valve). https://www.youtube.com/shorts/GGk0alHVO-E
So has anyone tried modifying IACV valve tables to eliminate the rev hang? :roll:

BohdanSkalyha · **Posted:** Sat Mar 04, 2023 2:50 pm

I succeeded)) :twisted:

https://youtube.com/shorts/o9P_RIW38Cg?feature=share

Vert36From99 · **Joined:** Sat Jun 24, 2023 4:41 am **Posts:** 15

BohdanSkalyha wrote:

I succeeded)) :twisted:

https://youtube.com/shorts/o9P_RIW38Cg?feature=share

whats ya messed with ?

LemmeTune · **Joined:** Sun Aug 27, 2023 6:24 pm **Posts:** 2

Thanks to you guys I was able to make some delicate pops/burble in my M52B20. (I don't want to burn my catalyst right away)

https://youtube.com/shorts/QlJVShR49GU?feature=share

You can see I changed only 2 tables in deceleration category:
left = Ignition Retard - Decreasing TPS (Closed),
right = Ignition Retard - Fast Decreasing TPS (Closed).

Nothing too crazy, but it's enough for my daily.

Vert36From99 · **Joined:** Sat Jun 24, 2023 4:41 am **Posts:** 15

misiasty wrote:

Little refresh
Got bored of the pops and bangs, cause everybody in my town is running them
I've managed to get pretty nice results recently with flame exhaust
Im pretty happy with it but still working on consistency, it shots flames but i think it happens too occasionally under load.
Tried to work on dashpot, setting it from 40% to 100% and the difference is barely noticeable
I feel like to shot flames while shifting we need to make the tables kick faster somehow?

Has somebody improved the results here? Or would like to work on it to make it spit flames like in turbo supras? XD

https://www.youtube.com/watch?v=avckX1nmHCI
https://www.youtube.com/watch?v=aHgyhiXcC7c
exhaust here is little too restricted, straight pipe surelly would make it better

@328i-sport-rossi counting on you

decel tables or base ignition and fuel table ??
taking a lot from this Decel forum and making my studies as well and figuring stuff out.
currently at deciding what works best to get a nice flame which will stay a while rather than bang with the P&B

smncld · **Joined:** Tue Dec 26, 2023 8:07 am **Posts:** 1

Hello everyone!
I'm looking to get pops and bangs from 3100 to 2800 rpm on my 328i MS41. I've read the 41 pages of the forum.

I succeeded by modifying these maps:
-Fuel restore - RPM (to 3100 rpm at 60°)
-Fuel injection - Base (increase by 0.04 on 2800 and 3100rpm)
-Ignition timing - Base (-22 on 2800 and 3100rpm)

But I also saw that's possible to do it via 'deceleration' maps.

So I modified these maps:
-Fuel cut - RPM hysteresis (max) (to 2080)
-Fuel cut - Hysteresis delay counter (to 260)
-Fuel injection - Base (increase by 0.04 on 2800 and 3100rpm)
-Ignition timing - Base (-22 on 2800 and 3100rpm)
But i have no result..

I would like to obtain them in the most 'professional' way possible, can you advise me?
Sorry for my bad english .. :roll:

official2times14 · **Joined:** Fri Feb 23, 2024 5:07 pm **Posts:** 3

could anyone please help me install a pop and cracle tune. i have the siemens flash tool and RomRaider installed

Bahmanson · **Posted:** Sat Feb 24, 2024 4:22 pm

e36_mafia wrote:

r19 wrote:

https://www.youtube.com/watch?v=zUJlVTMLoj0
So how about this one.

Does anyone know how its made? :oops:

It may not refer to "Deceleration" but looks interesting.

take a look at this , made with ms41 and romraider https://youtube.com/shorts/XXIWtxN1H74?feature=share
https://youtube.com/shorts/EMWiHbuhZoM?feature=share

How? Can u share .bin please ?

RomRaider

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