N54Tech.com - Your Source for International Turbo BMW Racing Discussion
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dotCEO dotCEO is offline
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Default 11-28-2016, 06:39 AM

Quote:
Originally Posted by julian2292
HiI am having an isssue with burble mode when its On (forgive my English, I live in Colombia).

As soon I lift the throttle, the engine makes a small jump or kick that its felt all over the car. This happens in 1,2 and 3 gear. With burble mod on the car loose the regular smooth deceleration that the stock car had. When I turn the burble off the car decelerates normaly without the engine kick.
I really enjoy this mod. There is some solution for this? Anyone had this issue?


Bmw 1m mhd flash. Stock exausht, mhd stock map burble hard 3 secs.
Mandame un mensaje privado en español si quieres. Necesito ver un log aver que esta pasando en tu carro.


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dotCEO dotCEO is offline
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Default 11-28-2016, 06:44 AM

Quote:
Originally Posted by slanteyez
How similar is the Burble feature to antilag? Since this is a DI engine has anyone done an oil analysis to see if the fuel is really diluting the oil? How is the extra fuel triggered? I notice sometimes when I let off the throttle the DME still keeps the throttle semi open in certain conditions.
I stopped using the feature as it was just running havoc on my car, plus it's winter so the car is stored.

During the annual winter build I'm getting rid of the PURE TURBOS and going SINGLE. But mainly, I'm sending out to the head to do the valve seals to ensure that isn't the issue causing the absolutely ridiculous oil consumption and smoking (when using the feature).


7DCT 2013 LeMans Blue BMW ///335is (Pending Inspection)
6AT | 135i ///M Sport - CRASHED (TOTALLED)
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(#103)
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PawlyGuNNz PawlyGuNNz is offline
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Default 11-29-2016, 06:57 AM

Quote:
Originally Posted by dotCEO
Great research! One thing that Megaman416 mentioned when he took his car to our shop is that FUEL was found in his oil... That leads me to believe that since I'm running full E85 100% of the time, I could be getting moisture in to my oil quicker than a vehicle running on PUMP.




Yea, I was the first one to respond to that thread as I had my burble suspicions, having my car being freshly built and having the same problem. Smoking N54's were popping left right and center, and the most common responses were "Your turbo seals, valve seals, PCV and cracked valve cover."

Since starting a conversation about this, I've been recommending people not to use this option until further research has been done to ensure that it isn't damaging anything.
+1


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julian2292 julian2292 is offline
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Default 12-13-2016, 10:38 AM

does anybody has used MHD burble daily for a year?
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User Name User Name is offline
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Default 12-13-2016, 08:13 PM

Daily since beta on soft 3 sec


Pure Stage 2's | MHD + JB4 | 625/613
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Bullitt1841 Bullitt1841 is online now
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Default 12-13-2016, 08:21 PM

I've been using it since it's release and my O2 sensors have just started to fail. Brand new ones were put in a little over a year ago, so it MIGHT be related.


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jyamona jyamona is offline
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Default 12-14-2016, 10:44 AM

Daily since I discovered the tables, along w/ Chris@CKI and no issues for either of us.


Enjoying the new tables discovered and the XDF progress made? if you'd like. Every bit is appreciated!
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R.G. R.G. is offline
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Default 12-14-2016, 04:38 PM

I've used it since release and now my washer fluid is low...wtf MHD??

If your car needs a quart of oil (bmw says every 5k is normal) removing this option from the flash will not change that guys.
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tofu tofu is offline
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Default 12-14-2016, 07:03 PM

daily since beta. no issues.

Then again, i don't run retarded values like 6 seconds on full aggression.
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dayofthejackal dayofthejackal is offline
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Default 12-16-2016, 11:57 AM

I've been running a custom fuel over-run map for 4 months and no problems.
D - 0.5 seconds fuel over-run @ -20 timing above 1,400 rpm.
S/M - 5.0 seconds fuel over-run @ -20 timing above 1,400 rpm.
-20 timing really makes it BANG!


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(#111)
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Default 12-16-2016, 12:06 PM

I have been smoking on 2 of my cars. removed it and no more smoke!!


2008 335XI(E92) AT/ garrett gtx3582r with jpworks manifold 1.06AR housing/ tial mv-s 38mm wgs(13.5 psi springs)/ tial bov/ fuel it level1 upgrade/ index 12 injectors/ N20 Map sensor/JB4 ST TS BEF with MHD/ Alpina Flash for now.
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ferocity02 ferocity02 is offline
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Default 12-16-2016, 03:58 PM

Quote:
Originally Posted by R.G.
I've used it since release and now my washer fluid is low...wtf MHD??

If your car needs a quart of oil (bmw says every 5k is normal) removing this option from the flash will not change that guys.
Did you even read the posts?


2007 E90 335i Pre-LCI
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mike082802 mike082802 is offline
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Default 12-16-2016, 10:30 PM

Quote:
Originally Posted by Bullitt1841
I've been using it since it's release and my O2 sensors have just started to fail. Brand new ones were put in a little over a year ago, so it MIGHT be related.
front or rear O2? im at 85k miles and just bought new fronts, hoping that does the trick. running since beta but my O2's are original. could be just wear and tear, too many ** removals and i wasn't careful.
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R.G. R.G. is offline
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Default 12-16-2016, 11:47 PM

Quote:
Originally Posted by ferocity02
Did you even read the posts?
Yea man, just breaking balls. Seems like a lot of circumstantial evidence and antecdotes. I can tell you that if your N54 is smoking with or without the burble there is a hardware related issue. Some minor others not so minor and would need to be addressed.
Regarding oil levels, make sure the car is at full operating temp and not parked on an incline/decline when checking. Every 3rd oil change I'll add 6Q rather then 6.5Q to adjust for some of the oil left in system after drain.
Single turbo and have been burrblin full aggressive since release like Robert Burrblay
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FCobra94 FCobra94 is offline
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Default 12-19-2016, 07:46 AM

Quote:
Originally Posted by R.G.
Every 3rd oil change I'll add 6Q rather then 6.5Q to adjust for some of the oil left in system after drain.
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(#116)
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R.G. R.G. is offline
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Default 12-19-2016, 07:58 AM

Quote:
Originally Posted by FCobra94
I change my own oil. Jack stands, incline, OFH, not that complicated.
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Default 12-19-2016, 01:17 PM

Quote:
Originally Posted by mike082802
front or rear O2? im at 85k miles and just bought new fronts, hoping that does the trick. running since beta but my O2's are original. could be just wear and tear, too many ** removals and i wasn't careful.
The fronts were replaced, and I'm going to assume that those are the ones to go first due to heat, contamination, etc. The only reason I say they are "going bad" is because when cruising or low throttle, my AFR goes to 17+ in both banks every so often, even at idle. Replacing them fixed that issue the last time.


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(#118)
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julian2292 julian2292 is offline
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Default 12-20-2016, 06:09 AM

Why people says " burble mode it's bad for the turbos "
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Sabre Sabre is offline
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Default 12-20-2016, 09:48 AM

Seems that some have no issues, some others do. Those who experience it, remove the burble and are usually fine thereafter. We can not definitely say that the burble causes issues, but on the other hand, we can not definitely say that it does not either. (plenty of reported cases in this thread). Perhaps a disclosure could be added to MHD? Who knows

At the end of the day its really just a silly ricer mod, those who are happy with it, keep it, those who do not like it, uncheck the option.

Rice on y'all!
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THE BEAST THE BEAST is offline
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Default 12-20-2016, 10:55 AM

Ok, what I dont understand is if in fact the burble option damages seals to cause smoking, etc Why would disabling the option stop the smoking ? If a seal is damaged, its not going to magically repair itself. Its like saying I have a nail in my tire and losing air, Ill pull the nail out and have it back to normal and it repairs itself with no more air leaking out. Kinda, sorta, Im sure you get the point.
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Default 02-21-2017, 12:54 PM

After a hard WOT pull i did on my fresh Rb stock turbos car smoked for a sec
And everytime i come to a stop i smell burned oil but without smoke

All since i activated burble



2008 335i N54 FFtech Top Mount single turbo 5862 Precision turbo
JB4 G5 , VRSF 7" FMIC , VRSF CP + HKS BOV, Tial Wastegates
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LessIsMore LessIsMore is offline
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Default 02-24-2017, 08:01 AM

Quote:
Originally Posted by THE BEAST
Ok, what I dont understand is if in fact the burble option damages seals to cause smoking, etc Why would disabling the option stop the smoking ? If a seal is damaged, its not going to magically repair itself. Its like saying I have a nail in my tire and losing air, Ill pull the nail out and have it back to normal and it repairs itself with no more air leaking out. Kinda, sorta, Im sure you get the point.
I am with you - I don't get it either. I don't believe the seal damage hypothesis is correct.

I think we need to understand if this is a case of causation or correlation.

The inconsistency of the data gathering and reporting in this thread, and in frequency/method, means we can't draw any real conclusions.


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(#123)
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dmak dmak is offline
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Default 02-24-2017, 12:41 PM

Quote:
Originally Posted by Nexic
The excess fuel that makes it through mostly evaporates or explodes before it hits the turbo. What is happening is unburned fuel is making it on to the exhaust stems and compromising the seals. Higher mileage cars may start to smoke and stop because the seal may still be on the edge of failure. Seals that have failed will continue smoke even after turning the exhaust burble option off. The people in Germany with compromised turbo seals had oil making it past the exhaust seals, coating the ehaust fan and throwing the turbo out of balance; compromising the turbo seal. More over, the exhaust burble is holding the exhaust valves open longer, causing an anti-lag condition, though the wastegate is open and the turbo is not spooling. The detonation in the exhaust manifold will eventually destroy the turbo, manifold, and head. Check out some Rally anti-lag builds, they replace each one of those parts every 500 miles. The conditions in our cars are no where near that level, though there is no disputing that there will be added wear. There is a reason we tune to keep the exhaust and intake valves open only as long as they need to be.
I think this is right.

The raw fuel is possible make it back into crankcase from valve seals/turbo seals. Oil can also enter exhaust causing smoke the same way. Most likely depend on the conditions of seals as well as under what conditions the engine is running(high rpm/ lot of engine brake/ ppl running engine hard before warm up/etc)

As fuel or possible water/moisture/vaper get push back into crankcase the oil level sensor will get mess up reading. H2o is one of the by product of combustion
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(#124)
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Zamaryl Zamaryl is offline
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Default 07-13-2017, 05:15 PM

Any recent MHD updated maps solve or answer any concerns ppl had? I just installed the MHD BEF and looking to flash that option. I would be using the most conservative settings. Thanks
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jyamona jyamona is offline
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Default 07-17-2017, 10:43 AM

Quote:
Originally Posted by Zamaryl
Any recent MHD updated maps solve or answer any concerns ppl had? I just installed the MHD BEF and looking to flash that option. I would be using the most conservative settings. Thanks
There is no issue, never was. It's a factory feature from BMW on their "IS" N54 cars, just adding to those that didn't come w/ it.


Enjoying the new tables discovered and the XDF progress made? if you'd like. Every bit is appreciated!
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