BM3 "Gunshot"

J_MENIS · 02-28-2017, 09:53 PM

Can someone explain how they make this happen?

And would this essentially cause after fire on a catless car?

yoandry · 03-01-2017, 08:29 AM

Quote:

Originally Posted by J_MENIS

Can someone explain how they make this happen?

And would this essentially cause after fire on a catless car?

Well, has been a little dilemma on a few thread and few member, counting me that after installing jb4 +dp no more gunshot untill the car is really hot and from higher rpms, when I could get them downshifting from 2krpm on mppk.
This has to be some values on the fuel values I guess.

M-terkait · 03-01-2017, 10:04 AM

MPPK sounds awesome and smooth, the gunshots aren't really pleasing to me.

Ultraboost · 03-01-2017, 10:17 AM

Quote:

Originally Posted by M-terkait

MPPK sounds awesome and smooth, the gunshots aren't really pleasing to me.

Agree, and other people will also think something's broken with your car.

Jadar · 03-01-2017, 11:09 AM

Quote:

Originally Posted by J_MENIS

Can someone explain how they make this happen?

And would this essentially cause after fire on a catless car?

They add extra fuel dump off after throttle release. It's essentially how this happens by adjusting a table in your ecu.

It's strange with some flash maps I had it really loud and with my current ACF flash I don't really have any burbles.

yoandry · 03-01-2017, 01:50 PM

Quote:

Originally Posted by Dejan_

It's strange with some flash maps I had it really loud and with my current ACF flash I don't really have any burbles.

Exactly what happened to me after jb4 and fbo installed, but fbo parts are ruled out as we know is something on the fuel tune.

Jadar · 03-01-2017, 02:05 PM

Quote:

Originally Posted by yoandry

Quote:

Originally Posted by Dejan_

It's strange with some flash maps I had it really loud and with my current ACF flash I don't really have any burbles.

Exactly what happened to me after jb4 and fbo installed, but fbo parts are ruled out as we know is something on the fuel tune.

Tried several times on my pwg and can't get the off throttle burble back. It wasn't crazy loud or annoying but it was there and now it's not

yoandry · 03-01-2017, 02:17 PM

Quote:

Originally Posted by Dejan_

Tried several times on my pwg and can't get the off throttle burble back. It wasn't crazy loud or annoying but it was there and now it's not

I haven't mess yet with mine but I will. Gonna put jb4 map 0 or 4 and try. If nothing change then I will remove the entire jb4 connections, if not, i'' then put my dp back, dont know.

Hopefully bm3 can get them back.

Jadar · 03-01-2017, 02:17 PM

Quote:

Originally Posted by yoandry

Quote:

Originally Posted by Dejan_

Tried several times on my pwg and can't get the off throttle burble back. It wasn't crazy loud or annoying but it was there and now it's not

I haven't mess yet with mine but I will. Gonna put jb4 map 0 or 4 and try. If nothing change then I will remove the entire jb4 connections, if not, i'' then put my dp back, dont know.

Hopefully bm3 can get them back.

They can if you're EWG. They found the tables.

yoandry · 03-01-2017, 02:27 PM

Quote:

Originally Posted by Dejan_

They can if you're EWG. They found the tables.

No I'm pwg. Yeah i'm waiting for them to test it on pwg.

Jadar · 03-01-2017, 03:36 PM

Quote:

Originally Posted by yoandry

Quote:

Originally Posted by Dejan_

They can if you're EWG. They found the tables.

No I'm pwg. Yeah i'm waiting for them to test it on pwg.

We gotta wait. Hopefully not long.

J_MENIS · 03-01-2017, 03:54 PM

Quote:

Originally Posted by Dejan_

Quote:

Originally Posted by J_MENIS

Can someone explain how they make this happen?

And would this essentially cause after fire on a catless car?

They add extra fuel dump off after throttle release. It's essentially how this happens by adjusting a table in your ecu.

It's strange with some flash maps I had it really loud and with my current ACF flash I don't really have any burbles.

Then with the fuel dump, there's a little extra to be burned. Which would cause after fire correct?

Chicken_Joe · 03-01-2017, 04:28 PM

I also think this effect has maybe something to do with back pressure which would possibly cause gasses to concentrate more in the exhaust and then combust on the way out. When you have a catless exhaust the flow is very good thus not allowing the gasses to concentrate as much in the system, thus eliminating the crackles. This is just a theory form me. I am not an engineer nor do I wish to be one lol.

yoandry · 03-01-2017, 04:36 PM

Quote:

Originally Posted by Chicken_Joe

I also think this effect has maybe something to do with back pressure which would possibly cause gasses to concentrate more in the exhaust and then combust on the way out. When you have a catless exhaust the flow is very good thus not allowing the gasses to concentrate as much in the system, thus eliminating the crackles. This is just a theory form me. I am not an engineer nor do I wish to be one lol.

That, which make sense or jb4 fuel values, or even both, who knows. What I know is that I have less gunshot and pussy burbles.

redbullfan · 03-01-2017, 05:30 PM

I mostly drive on map 4 just cause I dont wana be filling up my car every other day. But I noticed that on map 1 the burbles are not as loud and on map 2 they are decent. On Map 4 the burbles are louder then map 1 and 2

Chicken_Joe · 03-01-2017, 05:38 PM

Quote:

Originally Posted by yoandry

Quote:

Originally Posted by Chicken_Joe

I also think this effect has maybe something to do with back pressure which would possibly cause gasses to concentrate more in the exhaust and then combust on the way out. When you have a catless exhaust the flow is very good thus not allowing the gasses to concentrate as much in the system, thus eliminating the crackles. This is just a theory form me. I am not an engineer nor do I wish to be one lol.

That, which make sense or jb4 fuel values, or even both, who knows. What I know is that I have less gunshot and pussy burbles.

Right. It irks my souls tbh

yoandry · 03-01-2017, 06:42 PM

Quote:

Originally Posted by redbullfan

I mostly drive on map 4 just cause I dont wana be filling up my car every other day. But I noticed that on map 1 the burbles are not as loud and on map 2 they are decent. On Map 4 the burbles are louder then map 1 and 2

That means that jb4 indeed affect something as map4 is jb4 off. Will try that also.
Hopefully a jb4 expert can chime on this as when I bought my jb4+fbo, everyone said, na, it wont change anything about burble and gunshot, on the contrary will get louder.

Pure marketing

mike@x-ph.com · 03-01-2017, 06:45 PM

I would ask BMS technical support about this.

J_MENIS · 03-01-2017, 06:53 PM

Quote:

Originally Posted by yoandry

Quote:

Originally Posted by redbullfan

I mostly drive on map 4 just cause I dont wana be filling up my car every other day. But I noticed that on map 1 the burbles are not as loud and on map 2 they are decent. On Map 4 the burbles are louder then map 1 and 2

That means that jb4 indeed affect something as map4 is jb4 off. Will try that also.
Hopefully a jb4 expert can chime on this as when I bought my jb4+fbo, everyone said, na, it wont change anything about burble and gunshot, on the contrary will get louder.

Pure marketing

I still burble a bunch, FBO Jb4 w/E40. However I just didn't put my FMIC on yet

yoandry · 03-01-2017, 06:59 PM

Quote:

Originally Posted by mike@x-ph.com

I would ask BMS technical support about this.

I haven't yet because I am not 100% sure, if it is jb4 or dp, as I installed mine at the same time. But we are getting there I guess.

Quote:

Originally Posted by J_MENIS

I still burble a bunch, FBO Jb4 w/E40. However I just didn't put my FMIC on yet

There are burbles, I dont say they are not, but not the same strongest burbles prior my install, at lease on my mppk+mpe, not to mention that gunshot disappears. The burbles are with diarrhea.

redbullfan · 03-01-2017, 07:03 PM

Quote:

Originally Posted by yoandry

I haven't yet because I am not 100% sure, if it is jb4 or dp, as I installed mine at the same time. But we are getting there I guess.

I feel like the DP made it louder

M-terkait · 03-03-2017, 02:32 AM

I said this like 3 years ago, the jb4 overrides mppk tunes; no longer fast shifts, the car doesn't adapt anymore for mppk process, and burbles are gone.

When jb4 is attached the adaptation process isn't there after you disconnect battery and install jb4.

Why ? Idk but that what was happening!

02-28-2017, 09:53 PM	#1
J_MENIS Lieutenant 115 Rep 462 Posts Drives: 435i Join Date: Jul 2016 Location: San Francisco iTrader: (0)	BM3 "Gunshot" Can someone explain how they make this happen? And would this essentially cause after fire on a catless car? __________________ @Menis_F32 2015 435I Msport EWG - Muffler Delete, JB4, E30/40, VRSF Catless DP, Resonator Delete, BMS Intake, H&R Super Sport Springs, VRSF CP, Phoneix FMIC, BM3 STG2 OTS 91 - JB4 BEF
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03-01-2017, 10:04 AM	#3
M-terkait Major 209 Rep 1,252 Posts Drives: F30 335i 3/13 Join Date: Mar 2013 Location: Kuwait iTrader: (0)	MPPK sounds awesome and smooth, the gunshots aren't really pleasing to me. __________________ Docrace 6266
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03-01-2017, 04:28 PM	#13
Chicken_Joe Lieutenant Colonel 606 Rep 1,782 Posts Drives: 2013 F30 335i M Sport. EB 6M Join Date: Dec 2015 Location: Frontenac, Missouri iTrader: (3)	I also think this effect has maybe something to do with back pressure which would possibly cause gasses to concentrate more in the exhaust and then combust on the way out. When you have a catless exhaust the flow is very good thus not allowing the gasses to concentrate as much in the system, thus eliminating the crackles. This is just a theory form me. I am not an engineer nor do I wish to be one lol. __________________ 13' 335i M Sport. EBII/Coral Red 6MT. RPI GT exhaust, Resonator delete, PS1, GFB DV , BM3 Stage 2, ER CP, VRSF DP, VRSF 5.5in Stepped FMIC, Dinan Shockware. Carbon M Performance rear diffuser. M4 trunk lip. Conti DWS06 225/40/19 and 255/35/19
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03-01-2017, 05:30 PM	#15
redbullfan Captain 356 Rep 688 Posts Drives: 22 TR X3MC Join Date: Aug 2015 Location: New Jersey iTrader: (0) Garage List 2022 BMW X3MC [0.00]	I mostly drive on map 4 just cause I dont wana be filling up my car every other day. But I noticed that on map 1 the burbles are not as loud and on map 2 they are decent. On Map 4 the burbles are louder then map 1 and 2 __________________ 2022 X3M Comp 2013 335i xDrive (Sold)
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03-01-2017, 06:45 PM	#18
mike@x-ph.com BimmerPost Supporting Vendor 24060 Rep 190,592 Posts Drives: 07-335/12-328/18-M4/21-M4CP Join Date: Sep 2013 Location: Las Vegas iTrader: (23)	I would ask BMS technical support about this. __________________ Check out our current sale by clicking on this link! https://x-ph.com/sale/ Phone number 702-494-9435
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03-03-2017, 02:32 AM	#22
M-terkait Major 209 Rep 1,252 Posts Drives: F30 335i 3/13 Join Date: Mar 2013 Location: Kuwait iTrader: (0)	I said this like 3 years ago, the jb4 overrides mppk tunes; no longer fast shifts, the car doesn't adapt anymore for mppk process, and burbles are gone. When jb4 is attached the adaptation process isn't there after you disconnect battery and install jb4. Why ? Idk but that what was happening! __________________ Docrace 6266
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