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bk335xi bk335xi is offline
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Default 11-18-2015, 09:55 AM

Quote:
Originally Posted by Josh1a1h
Yep that's fine.

I am happy with 17psi peak on 93.

I am sure a little more is achievable with Inlets, but i don't have them yet.

But when i do install meth, i would like to boost 19-20psi safely without inlets... If that's possible. I guess the logs will tell the truth. This will be on a 50/50mix
Inlets won't allow you to run more boost since you're octane limited, they allow you to hold the boost higher in the rpm. To run more boost, you need meth or E85. Inlets just allow the boost taper to be not as severe since the turbos can breath easier.


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Dcara Dcara is offline
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Default Flashing back to stock - 11-18-2015, 10:15 AM

When I first picked up the MHD tune I followed the steps that backed up the original flash. When I tried to go back to stock last week (winter mode) my car would no longer start. I had to flash the pump flash back on. Any thoughts on how I can get is to stock for the winer? Not the end of the world but would prefer it as I live in Alberta Canada and I don't need the extra boost when driving on ice. lol.
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(#1703)
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bk335xi bk335xi is offline
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Default 11-18-2015, 10:32 AM

Quote:
Originally Posted by Dcara
When I first picked up the MHD tune I followed the steps that backed up the original flash. When I tried to go back to stock last week (winter mode) my car would no longer start. I had to flash the pump flash back on. Any thoughts on how I can get is to stock for the winer? Not the end of the world but would prefer it as I live in Alberta Canada and I don't need the extra boost when driving on ice. lol.
Just run the jb4 in map 4.


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(#1704)
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Dcara Dcara is offline
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Default 11-18-2015, 10:57 AM

Quote:
Originally Posted by bk335xi
Just run the jb4 in map 4.
That's what I'm doing, but I think the car still runs more aggressive than if I ran JB4 map4 and a stock map flashed to the ECU.
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Rushan Rushan is offline
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Default 11-18-2015, 11:52 AM

Anything changed with MHD as I always used to flash back to stock or flash back my original bin and no errors or shadow errors, today flashed back to stock and tried also flash back my original bin and both kept giving me 2FA3 coding missing and can't clear it until I went and from tunerpro set the table from 11 to 00

Any of the MHD last updates has to do with this?


09 E92 335i - Hot-Climate Middle East package, M Sports suspension, 19" Rims, 6AT fully built internals, bushings, raybestos clutches and sonnax with xHP stage 3, Differential lockdown, New RB Turbo CHRA, JB4 - Map 3 70 adder with N20 TMAP - MHD BMS Race Flash with Tuned Duty Bais and PID - BMS Oil Cooler Valve - RB PCV - K&N DCI - AFE Air Scoops - 98 Super Fuel - WAGNER FMIC - 3" down's, RB Inlets- BMS charge pipe With Tial BOV - BMS Meth Kit with FSB, 30/70 Water/Meth on CM12 nozzle
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Godla26 Godla26 is offline
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Default 11-18-2015, 01:38 PM

Hi guys I am new to this jb4 Tunning and I just updated mine to 31.8 and my car did lost a lots of power. So I was told to do bms pump flash.
Can you guys point me to wright direction?
Thank a lot and sorry for this post.
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(#1707)
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Mr. T Mr. T is offline
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Default 11-18-2015, 01:41 PM

Quote:
Originally Posted by Godla26
Hi guys I am new to this jb4 Tunning and I just updated mine to 31.8 and my car did lost a lots of power. So I was told to do bms pump flash.
Can you guys point me to wright direction?
Thank a lot and sorry for this post.
Did you update the settings properly?
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(#1708)
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500hp500tq 500hp500tq is offline
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Default 11-19-2015, 09:41 AM

Hey!
Can I load older e85 flashes that we used with BB flash via MHD?
Or only the E85 flash the Terry created specifically for MHD?



|2008 135i N54 | VRSF FBO| Motiv Port Injection | BMS PI Controller| AD-E ST Kit 6062 | JB4 G5 ISO 13.0 | BMS ST/MHD E85 Flash | 60% e70 | Fuel-It Stage3 LPFP | Spec2+/SMFW |3.5 TMAP | NLS

"stock"
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bk335xi bk335xi is offline
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Default 11-19-2015, 09:44 AM

Quote:
Originally Posted by 500hp500tq
Hey!
Can I load older e85 flashes that we used with BB flash via MHD?
Or only the E85 flash the Terry created specifically for MHD?
Only the ones for MHD specifically. Why wouldn't you want the latest flash?


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Default 11-19-2015, 09:45 AM

Quote:
Originally Posted by 500hp500tq
Hey!
Can I load older e85 flashes that we used with BB flash via MHD?
Or only the E85 flash the Terry created specifically for MHD?
Older flashes will work flashed via MHD but some of the MHD specific flashes cannot be flashed via BB.


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(#1711)
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Terry @ BMS's Avatar
Terry @ BMS Terry @ BMS is online now
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Default 11-19-2015, 09:48 AM

Quote:
Originally Posted by 500hp500tq
Hey!
Can I load older e85 flashes that we used with BB flash via MHD?
Or only the E85 flash the Terry created specifically for MHD?
There are separate BB and MHD flash files for use with each respective flashing system.


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500hp500tq 500hp500tq is offline
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Default 11-19-2015, 09:52 AM

THANKS
and older BB flash seems faster
jk just wanted to use for testing



|2008 135i N54 | VRSF FBO| Motiv Port Injection | BMS PI Controller| AD-E ST Kit 6062 | JB4 G5 ISO 13.0 | BMS ST/MHD E85 Flash | 60% e70 | Fuel-It Stage3 LPFP | Spec2+/SMFW |3.5 TMAP | NLS

"stock"
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tc535i tc535i is offline
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Default 11-19-2015, 10:07 AM

Quote:
Originally Posted by 500hp500tq
THANKS
and older BB flash seems faster
jk just wanted to use for testing
I imagine it is, if only for the reason that it's far more restricted to what tables it can access vs MHD
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ksalih ksalih is offline
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Default JB4 Backend flash w/out JB4 using MHD - 11-19-2015, 09:05 PM

Hello all. I don't post on this forum much, but had a few questions that I didn't see answered, regarding the pump backend flash linked by Terry in the first post.

1. The pump flash states it's sufficient for pump fuels up to 30% e85 (e30, i'm assuming). Does that mean I will pull more timing running 91ACN vs. e30, using this same flash? This is assuming the flash targets a set timing safe enough for 91ACN to e30.
2. How much timing does the pump flash target? My logs show about ~7* but could someone confirm?..this may have been answered, so I apologize.
3. I am currently running this flash without a JB4 installed, flashed via MHD (The MHD OTS 91 stage 2 aggressive map is terribly unsmooth at WOT for me, and several others for that matter). I do not understand the downfall of doing this; other than the benefit of the JB4 luxury features (gauge hijacking, etc.), what is the downfall of flashing this backend flash without a JB4 (I'm assuming a "backend flash" is just a flash, similar to the MHD ots flashes, but correct me?)
4. I need a beer..

Thanks in advance.


'08 E92 335i Pre-LCI | SGM | VM PTE 6062 ST top mount conversion | JB4 ST BEF | Alpina B3 TCU Flash |Fortune Auto 500 w/ 8k/11k Swift Springs | 28mm ECS solid FSB | M3 Front and Rear Control Arms w/ Rogue Adjustable Toe Arms | 18x9.5 et22/18x9.5 et35 Arc-8's wrapped in 275/245 NT05's | VRSF V2 catback exhaust | Poly transmission mounts | Solid aluminum subframe bushings
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MHD MHD is offline
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Default 11-20-2015, 02:28 AM

Quote:
Originally Posted by Enfiftyfore
So, I have a question. If I stick a Fuel it stage 2 lpfp in and run the JB4 pump flash via MHD with E85 and my JB4, which map are you supposed to run with it?
N54, **, DCI, AX BACK, JB4
I have been reading a lot of threads and I still really don't understand what the back end flash is doing.
Stay in map 5, pushing more boost without a FMIC will make IAT raise too quickly.

Quote:
Originally Posted by J. Dub
Does MHD have anti-lag feature?
Not for now.

Quote:
Originally Posted by GFRoSTY
I noticed that the app shows 2 software versions; Factory and Current which appear different.
Do I need to or should they match and if so is it a case of flashing back a STOCK bin from within the app?
Factory is outdated on most cars, hence the different current version.

Quote:
Originally Posted by wardy335i
does MHD change anything with the TCU?
No. At the end of a flash process, the error codes are deleted on some modules - DSC, DME, TCU. The alpina flash is know to react like this after deleting TCU codes memory. Waiting for the ECU to go to sleep gets rid of this behavior.

Quote:
Originally Posted by Josh1a1h
Thank you for that.
The reason i mention the car idea is because I live in a flat and plugging into a mains is not really possible
If your battery is healthy and you drove the car recently, you can try without charger by removing the fuel pump fuse http://www.n54tech.com/forums/showthread.php?t=19108

Quote:
Originally Posted by bk335xi
Need better fuel for 20psi. 17psi is pushing it for 93, hence why map 5 is only going to 17.
Acceptable Boost target depends on the rest of the tuning. This is why the JB4 has higher boost targets with a BEF in place, because the pump flash has lower timing than stock. As for why map 5 was not revised like other maps were, I don't know.
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MHD MHD is offline
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Default 11-20-2015, 03:13 AM

Quote:
Originally Posted by Dcara
When I first picked up the MHD tune I followed the steps that backed up the original flash. When I tried to go back to stock last week (winter mode) my car would no longer start. I had to flash the pump flash back on. Any thoughts on how I can get is to stock for the winer? Not the end of the world but would prefer it as I live in Alberta Canada and I don't need the extra boost when driving on ice. lol.
Most likely your car was already having a flash on it when your did your backup. Please send me your backup per email to confirm.
You can use the stage 0 map which is the stock map flashed in 2 min, with MHD still installed.

Quote:
Originally Posted by Rushan
Anything changed with MHD as I always used to flash back to stock or flash back my original bin and no errors or shadow errors, today flashed back to stock and tried also flash back my original bin and both kept giving me 2FA3 coding missing and can't clear it until I went and from tunerpro set the table from 11 to 00
Any of the MHD last updates has to do with this?
Nothing related. 2FA3 is absolutely benign. I'll follow up on your email.

Quote:
Originally Posted by 500hp500tq
Hey!
Can I load older e85 flashes that we used with BB flash via MHD?
Or only the E85 flash the Terry created specifically for MHD?
Yes you can (but not the other way), though the BB maps are more limited on some aspects.

Quote:
Originally Posted by ksalih
Hello all. I don't post on this forum much, but had a few questions that I didn't see answered, regarding the pump backend flash linked by Terry in the first post.

1. The pump flash states it's sufficient for pump fuels up to 30% e85 (e30, i'm assuming). Does that mean I will pull more timing running 91ACN vs. e30, using this same flash? This is assuming the flash targets a set timing safe enough for 91ACN to e30.
2. How much timing does the pump flash target? My logs show about ~7* but could someone confirm?..this may have been answered, so I apologize.
3. I am currently running this flash without a JB4 installed, flashed via MHD (The MHD OTS 91 stage 2 aggressive map is terribly unsmooth at WOT for me, and several others for that matter). I do not understand the downfall of doing this; other than the benefit of the JB4 luxury features (gauge hijacking, etc.), what is the downfall of flashing this backend flash without a JB4 (I'm assuming a "backend flash" is just a flash, similar to the MHD ots flashes, but correct me?)
4. I need a beer..

Thanks in advance.
1. I think Terry had the fuel capacity in mind, not timing
2. I guess around 7 yes
3. Boost/spook should be quite limited with a BEF and no JB4. As for the OTS maps, I'd be glad to help, v6 maps are coming so if you want to give it a shot, email me.
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(#1717)
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stanlalee stanlalee is offline
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Default 11-20-2015, 06:43 AM

Quote:
Originally Posted by tc535i
I imagine it is, if only for the reason that it's far more restricted to what tables it can access vs MHD
I think you misread for starters. The tables are the same as they use the same xdfs and software (except the new MHD folder in the very latest xdfs that haven't been implemented in backend flashes yet). You have access to the same tables otherwise with BB and MHD. You have tq limiting logic/calculations applied during flashing with MHD beneficial to auto/dct trans guys but tables are the same.
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Nicky92 Nicky92 is offline
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Default 11-21-2015, 07:17 PM

Quote:
Originally Posted by 500hp500tq
THANKS
and older BB flash seems faster
jk just wanted to use for testing
The older BB is definitely faster, I feel the same.

The new one is noticeaBly slower


335- stock
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(#1719)
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wardy335i wardy335i is offline
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Default 11-21-2015, 11:19 PM

Quote:
Originally Posted by Josh1a1h
Yep that's fine.

I am happy with 17psi peak on 93.

I am sure a little more is achievable with Inlets, but i don't have them yet.

But when i do install meth, i would like to boost 19-20psi safely without inlets... If that's possible. I guess the logs will tell the truth. This will be on a 50/50mix
I am running DCI and MHD stg1+FMIC and i peak 19psi, holding 16-17psi.


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mrx168 mrx168 is offline
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Default 11-22-2015, 11:46 AM

Hi guys

I've just done a MHD pump gas backed flash forJB4 and I'm wondering if I should reset the Ff/wastegate adaptation value and fuel open loop value for JB4 back to default? (so Ff = 80 and fol = 70)?

As currently JB4 has auto adjusted them to 118 and 86.

My afr bias and duty bias are all 0


2007 E90 BMW 335i |JB4|AR ***|ER chargepipe + Forge DVs|BMS dual cone intake|

1993 R33 Nissan Skyline GTS-T |SAFC-2|Apexi POD|Boost Tee|FMIC|3" TBE|
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Marcus_swe Marcus_swe is offline
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Default 11-23-2015, 12:10 PM

Don't know that much about back end flashes and have tried searching, could someone help with some basic questions?

I have a European (Swedish) 2010 335i N54 with JB4 G5 ISO, BMS DCI and **'s. Bought it a couple of months ago.
I have currently no plans on using E85, just pump 93 RM2.

1. Will there be any power gains with a back end flash with my current mods? Will the target boost for map 2 be 17psi instead of 14.5, or do I need e.g. full exhaust or any other mods for that?

2. Is it plug-and-play or do I need to do any mods? Have read about modifying xdf (?), is that needed?

Thanks!
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Josh1a1h Josh1a1h is offline
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Default 11-23-2015, 12:43 PM

Quote:
Originally Posted by wardy335i
I am running DCI and MHD stg1+FMIC and i peak 19psi, holding 16-17psi.
How could you run such high boost with no dowj pipe? That cannot be healthy.


UK Based | JB4 32_2 | MHD Race BEF | VRSF ** | VRSF 7" IC | Tial Bov w/ VRSF CP | BMS DCI | BMS Meth |
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Fmonteiro444 Fmonteiro444 is offline
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Default 11-24-2015, 08:39 AM

Quote:
Originally Posted by erwan35
Need advise, will my hybrid turbos work well with mhd flash? Specs are billet 19t compressor wheel with full back 9 blade turbine wheel td04 catdrige. I am stacking jb4 w/ bms/mhd flash
My only concern with the OTS flash would be overboost. But since you are stacking with JB4 this won't be an issue. Just make sure you get the N20 sensor.


----------------------------------------------------
14 F30 335xi AT- Built Closed-Deck N55, SpeedTech Stage 3 w/ BW-8374C, MHD Flash, xHP Flash, E85, AFE Intake, VRSF 6" Race FMIC, VRSF CP, Fuel-it Stage 2 LPFP and PI
----------------------------------------------------
16 Audi S6 - APR Stage 2 ECU/TCU flash, APR Exhaust, SRM Intakes
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erwan35 erwan35 is offline
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Default 11-24-2015, 09:46 AM

Yes i have the n20 tmap sensor



_______________________________________\\\
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Traf Traf is offline
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Default 11-24-2015, 10:10 AM

Hi,
I don't understand why BEF targets less timing while JB4 targets more boost in BEF mode.
Isn't the other way around better ? Less boost more timing ?


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