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435gc 435gc is offline
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Car: 2015 435i xdrive gran coupe
Default 07-31-2019, 08:24 PM

Interesting. I wonder why the JB4 needs this piece of hardware to "dynamically control" the wastegate when the flash tunes do not.
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(#1002)
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bonedoc m3 bonedoc m3 is offline
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Car: 2016 m3
Default 08-03-2019, 02:42 AM

Terry @ BMS
I just installed JB4, and car stumbles between 4000-4500, what could be some possible causes? No misfires or CEL are popping up.
How can I get you to do a custom tune?
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(#1003)
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Object_a17 Object_a17 is offline
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Car: BMW f30 355
Default 08-13-2019, 12:24 PM

Hello, is there BEF maps for bigturbo (stage 2 VVTO)?

my car f30 PWG, using pwg2 bef map for stock turbo
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(#1004)
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BMW335icjz BMW335icjz is offline
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Car: N55 335i xdrive
Default 08-19-2019, 09:55 PM

So I have a JB4 and I have the MHD tune and want to use the BEF and have the same experience as I do when I run the MHD stage 2+. I have tried running the race PWG BEF with the jb4 and while it feels ok when compared to the MHD stage 2+ versus the JB4/BEF on map6 with the FUD#6 set to on its almost like a whole different car and not in a good way its tamer compared to the stage 2+ by itself but I want to use my JB4 for its tuning and monitoring capabilities but from what I keep reading I should be able to run the JB4/BEF with similar if not better results. What am I doing wrong? Do i need to change the boost settings in the map 6? I dont know what the stage 2+ run for boost cause it feels insane. I am FBO VRSF **, CTS CP, wagner EVO2, AFE intake.
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(#1005)
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spammer spammer is offline
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Car: 435i
Default 08-20-2019, 04:11 AM

Quote:
Originally Posted by BMW335icjz
So I have a JB4 and I have the MHD tune and want to use the BEF and have the same experience as I do when I run the MHD stage 2+. I have tried running the race PWG BEF with the jb4 and while it feels ok when compared to the MHD stage 2+ versus the JB4/BEF on map6 with the FUD#6 set to on its almost like a whole different car and not in a good way its tamer compared to the stage 2+ by itself but I want to use my JB4 for its tuning and monitoring capabilities but from what I keep reading I should be able to run the JB4/BEF with similar if not better results. What am I doing wrong? Do i need to change the boost settings in the map 6? I dont know what the stage 2+ run for boost cause it feels insane. I am FBO VRSF **, CTS CP, wagner EVO2, AFE intake.
Well one easy way to do it is run JB4 on map 0 and turn logging on - then run MHD stage2+ and do a couple of 3rd gear pulls or even WOT 1,2,3,4 gear pulls and read what MHD stage2+ is doing on the log and then set your map6 boost targets per RPM to be the same as a base line.

All these N55's are all capable of the same things regardless of what tune you run its just how you dial it in is up to you. There is no special trick BM3 or MHD has over JB4, just different applications to get the desired results.. No one can really tell you exactly how to do it you just have to do some pulls, read yoru logs and adjust your settings.

If you want to eek every last bit of power out of your car its going take time to learn how to do it, there is no switch to flip on JB4 to make it happen. THere is alot of information in these forums. i knew 0 about bmw turbos, PID tunning etc, but many months of reading and trial and error and reading logs really helped me learn and now ill give my pig f33 convertible the pepsi challenge against anyone running MHD or BM3.

Also try running map 7 on JB4 see how that feels.


Performance: 2014 435i : F33 (convertible) : 8AT : BMS Intake : VSRF Charge Pipe - Down Pipe & FMIC : JB4 Stage 2 : FF Wires : EWG Wires : 40% E85 : XHP Stage 3: E85 BEF

Dragy: "Spammer" 12.72@111.70 | 0-60 4.71
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(#1006)
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Martin.328 Martin.328 is offline
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Car: 16 328
Default 08-20-2019, 04:41 AM

I just did n20 tmap and the sensor is reading much higher than the other sensor. For example on read 19psi the other read 26psi. I have tried flashing the n20 tmap option on both the flash n jb4 but it either doesnt work or it reads stupid high. Right now i have it off on the flash and option 1 on jb4. Btw this is on the full e85 ots map
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(#1007)
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BMW335icjz BMW335icjz is offline
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Car: N55 335i xdrive
Default 08-20-2019, 07:27 PM

Hey Terry, i would love to get your help on setting up my jb4/mhd bef i love the way the car drives with the stage 2+ 93 mhd flash but cant get the car to drive similar with the jb4/mhd bef and would love to be able to use my jb4 for its features. I have fbo pwg please help out i must be doing something wrong.
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