N54Tech.com - International Turbo Racing Discussion
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yellowfin's Avatar
yellowfin yellowfin is offline
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Default 06-26-2019, 07:05 PM

@suni335
I don't think the pump BEF on map 1 will give much performance gain, if any. The most benefits of BEF come in when you use better fuel and higher maps (fuel scalar, timing). If I remember right, the MHD option for OEM *** has nothing to do with performance. If you check it, your O2 sensors will be able to set ready, but you'll get CEL on non-OEM equipment.


2007 335xi (I8A0S kline) -- VTT GC lites + inlets + outlets -- Fuel-it stg 2 lpfp -- CPE catted **, FMIC, CP -- Tial BOV -- BMS DCI + OCC
JB4 + BMS bef (E50)
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(#3852)
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yellowfin yellowfin is offline
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Default MHD JB4 license boost ceiling - 07-03-2019, 07:12 AM

Quote:
Originally Posted by TimboBlackkers
Probably need to email MHD about that.

I'd be interested to know if MHD is editing the Boost target in the BEF when using their cheaper BEF option rather than the custom flasher option.
I asked MHD, the only restriction for the backend flash should be the wgdc tables (since boost is controlled by jb4), so no need for mboost option with the jb4 license, which is nice.

Still no luck. My max DME_BT is just about 19 no matter what. Started to play with "Load limit factor" table vs %/hPa, which may be related to ambient pressure. I am at 5600 ft which is 825 hPa, considerably lower than 1013 sea level reference. Can't say I understand what this table is supposed to do. Zeroed it, got max 6 psi. Increased from 0.13 to 0.15, the car got touchy in the low end, but still same limit in the high end.

Anybody around here who managed to get DME_BT above 20 psi with the public xdf?


2007 335xi (I8A0S kline) -- VTT GC lites + inlets + outlets -- Fuel-it stg 2 lpfp -- CPE catted **, FMIC, CP -- Tial BOV -- BMS DCI + OCC
JB4 + BMS bef (E50)
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(#3853)
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blown07 blown07 is offline
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Default 07-06-2019, 06:31 AM

Quote:
Originally Posted by yellowfin
I asked MHD, the only restriction for the backend flash should be the wgdc tables (since boost is controlled by jb4), so no need for mboost option with the jb4 license, which is nice.

Still no luck. My max DME_BT is just about 19 no matter what. Started to play with "Load limit factor" table vs %/hPa, which may be related to ambient pressure. I am at 5600 ft which is 825 hPa, considerably lower than 1013 sea level reference. Can't say I understand what this table is supposed to do. Zeroed it, got max 6 psi. Increased from 0.13 to 0.15, the car got touchy in the low end, but still same limit in the high end.

Anybody around here who managed to get DME_BT above 20 psi with the public xdf?
Not sure how much you know but I will throw out some perhaps obvious points that I know using BEF and MHD on 2 cars. We have a similar setup as well with GC lites.
- Do you have the upgraded 3.5 BAR map sensor? This will fix your problem instantly and provide accurate reading above 20PSI for safety.
- With the latest BEF they have dropped the timing targets way down. I use the latest Hybrid RACE BEF with GC lites but modified timing tables of 12 degrees at the highest load (like the old race flash). New timing targets with Race flashes is only 9 degrees.
- When running 4/2 I think the highest you can target without the 3.5 Bar upgrade is around 19.5psi. I run the 3.5 BAR and a max boost adder of 45 with meth on 94 which nets around 21 PSI with the GC lites.
- I run menu 4/2 on my other car with stock Map sensor and the max adder on Map 3 of 75 with Meth is 19.X PSI.
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yellowfin yellowfin is offline
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Default 07-07-2019, 06:38 PM

Thanks for the feedback! Yes, sure, I have the N20 3.5 bar sensor, this one is a nobrainer.

I totally agree on the timing, I have about 12 degrees as well at 20 psi with E50. Optimal timing depends a lot on the setup/fuel. This is where I set out to fine tune timing up to 220 load.

With menu 4/2, I can target boost above 20 psi no problem until my hpfp craps out. My old one (2007 vintage) had intermittent drops, but overall kept up bravely. I just installed a new one, not sure yet it's any better. My goal is 22 psi or so, if needed I may be going PI later on.

The reason I want to tinker with the boost target in the map is that I want to match JB4 and DME targets, or go menu 4/4 altogether. Currently, say at 21 psi, the load is around 190, but the DME "sees" only 160. This make fine tuning (eg timing difficult). My understanding from older MHD posts is that 220 is pretty much the upper limit, but I would like to fully utilize it. The current BMS befs keep the boost ceiling of 1.28 bar, thereby capping the DME_BT at 18.6 psi and the corresponding DME observed load of 160 or so, even when the actual boost is much higher.


2007 335xi (I8A0S kline) -- VTT GC lites + inlets + outlets -- Fuel-it stg 2 lpfp -- CPE catted **, FMIC, CP -- Tial BOV -- BMS DCI + OCC
JB4 + BMS bef (E50)

Last edited by yellowfin; 07-07-2019 at 06:45 PM..
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blown07 blown07 is offline
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Default 07-08-2019, 04:48 AM

Quote:
Originally Posted by yellowfin
Thanks for the feedback! Yes, sure, I have the N20 3.5 bar sensor, this one is a nobrainer.

I totally agree on the timing, I have about 12 degrees as well at 20 psi with E50. Optimal timing depends a lot on the setup/fuel. This is where I set out to fine tune timing up to 220 load.

With menu 4/2, I can target boost above 20 psi no problem until my hpfp craps out. My old one (2007 vintage) had intermittent drops, but overall kept up bravely. I just installed a new one, not sure yet it's any better. My goal is 22 psi or so, if needed I may be going PI later on.

The reason I want to tinker with the boost target in the map is that I want to match JB4 and DME targets, or go menu 4/4 altogether. Currently, say at 21 psi, the load is around 190, but the DME "sees" only 160. This make fine tuning (eg timing difficult). My understanding from older MHD posts is that 220 is pretty much the upper limit, but I would like to fully utilize it. The current BMS befs keep the boost ceiling of 1.28 bar, thereby capping the DME_BT at 18.6 psi and the corresponding DME observed load of 160 or so, even when the actual boost is much higher.
Okay I see what you mean I show a DME target of 18.1 or 18.2 with actual boost over 21PSI. I looked into adjusting the load targets in the BMS flash to reduce boost when meth is not activated because with the race flash and the 3.5 Bar sensor in Map 3 the target is 15psi and with 12 degrees of timing makes me a little uncomfortable without meth. I gave up on this for now. I'm on 94 + meth any my HPFP is no problem but my LPFP is dipping just below 50psi.
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Amgkiller54 Amgkiller54 is offline
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Default 07-09-2019, 03:09 PM

2019-06-26 02_11_21_Map-6.csv
Greetings broís , since iím new to this forums iím in the process of reading and learning how to make my N54 335i faster. My current mods are : Jb4 (on map 5 and 6 ) , RB turbo inlets , Rb turbo outlets , vrsf intercooler , Ar cattles ********* , Vrsf chargepip with hks blow off. For these upgrades ,i am not happy with my 1/4mile times. Since iím from south america and we dont have tuners here, iím trying to learn and upgrade my car myself. So i came on the forums with a lot of hope. Iíve attached my log on pumpgas . I hope that someokne can help me look into it and give me advice of what iím doing wrong.
My best 1/4mile time is 12.98 @108Mph 60Ft is 2.05seconds (Dragybox).
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yellowfin yellowfin is offline
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Default 07-09-2019, 09:13 PM

Ok, so I made finally some progress. In the process, I tested god knows how many tables, and I came across the very nice youtube channel of RFP, who offers a crash course in tuning
https://www.youtube.com/channel/UCA4...fB5fLUQ/videos

However, what seemed to make the difference was about the second last table I expected: Changed the "Boost Limit Multiplier" to 3.5 across the board and the "Boost Limit Multiplier Ceiling" to 4. I now get a DME_BT up to 22, as desired.


2007 335xi (I8A0S kline) -- VTT GC lites + inlets + outlets -- Fuel-it stg 2 lpfp -- CPE catted **, FMIC, CP -- Tial BOV -- BMS DCI + OCC
JB4 + BMS bef (E50)
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yellowfin yellowfin is offline
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Default 07-09-2019, 10:03 PM

Quote:
Originally Posted by blown07
I'm on 94 + meth any my HPFP is no problem but my LPFP is dipping just below 50psi.
Fuel-it has good lpfp options. Depending on the age of the car, I'd suggest to do the fuel filter/ pressure regulator (driver side) at the same time, so you have to deal with the pita clip only once


2007 335xi (I8A0S kline) -- VTT GC lites + inlets + outlets -- Fuel-it stg 2 lpfp -- CPE catted **, FMIC, CP -- Tial BOV -- BMS DCI + OCC
JB4 + BMS bef (E50)
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mb443 mb443 is offline
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Default 07-10-2019, 12:19 PM

I am currently running the latest PUMP flash. There is no E85 available where I live but I'm in a city where I can get some and am tempted to try a blend while I'm here. Possibly fill a tank of the stuff to take home if the butt dyno is happy.

I don't have a device with me I can flash with. Wondering if it's strictly required to reflash with an E85-specific file to see performance benefits with a mild blend (25-30%)? If yes, is there any risk of running a blend on the PUMP flash for a couple dozen KM until I can reflash?

Appreciate the input.


2008 E90 335i 6MT Sport > JB4 G5 ISO + PUMP BEF | N54Tuning d-p1pes | Evo 1 FMIC | Phoenix CP | Turbosmart DualPorts (50/50) | Burger DCI, OCC, CDV, diff brace, cowl filters, etc | Shiftek DSSR | ZHP knob | Michelin PS AS3+ on stock 162s | minor cosmetic stuff
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yellowfin yellowfin is offline
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Default 07-10-2019, 05:07 PM

Quote:
Originally Posted by mb443
I don't have a device with me I can flash with. Wondering if it's strictly required to reflash with an E85-specific file to see performance benefits with a mild blend (25-30%)? If yes, is there any risk of running a blend on the PUMP flash for a couple dozen KM until I can reflash?
The pump flash has a slightly increased fuel scalar and should be good for a few gallons E85. The E85 flash is more for half tank E85 and up. When driving with wrong bef/fuel combination for a few miles, just don't punch it and it's ok.


2007 335xi (I8A0S kline) -- VTT GC lites + inlets + outlets -- Fuel-it stg 2 lpfp -- CPE catted **, FMIC, CP -- Tial BOV -- BMS DCI + OCC
JB4 + BMS bef (E50)
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tphaeng tphaeng is offline
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Default 07-11-2019, 12:46 PM

Hey everyone.

I need some help with trouble shooting my car.

First time I flashed the car I was running jumper cables to another car and did a "pump gas" BEF from the first page. It went to 100% complete and showed the message that I need to turn off ignition and wait 30 seconds and start up. Car started and then dies right away. I tried flashing the "stock" flash same thing. Then I tried the map 0 same thing.

Emailed mhd and they told me to check fuel pump fuse. I replaced it because it was blown tried flashing again same thing.

I removed jb4 and tried again same thing. I check all fuses in fuse box all were good.

Every time I tried flashing it went to 100% complete. Not sure why the car isnt starting g

Is there anything else I should check?
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JFF67 JFF67 is offline
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Default Need Help and Feel Like an Idiot - 07-26-2019, 10:20 AM

I really need some help. I followed all of the steps to do a BEF on my 335is with the JB4 MHD BEF.

I set everything up properly started the flash and realized in the first minute that I had selected the wrong file, I had started loading JB4_BB2_INAOS_PUMP.bin, I realized my mistake after a minute or two, panicked and un-plugged the android device, which as it turns out is a bad thing to do.

After I gathered myself I have tried to flash it back to stock (I did the backup last night). When I try that the MHD app connects and goes to 1% and stays there, same thing for when I try to load the JB4 BB2 INOAS pump flash, I thought maybe I could let that finish and then flash it back to stock and start over.

Any suggestions would be greatly appreciated-
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Fredm21 Fredm21 is offline
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Default 07-26-2019, 10:32 AM

Quote:
Originally Posted by JFF67
I really need some help. I followed all of the steps to do a BEF on my 335is with the JB4 MHD BEF.

I set everything up properly started the flash and realized in the first minute that I had selected the wrong file, I had started loading JB4_BB2_INAOS_PUMP.bin, I realized my mistake after a minute or two, panicked and un-plugged the android device, which as it turns out is a bad thing to do.

After I gathered myself I have tried to flash it back to stock (I did the backup last night). When I try that the MHD app connects and goes to 1% and stays there, same thing for when I try to load the JB4 BB2 INOAS pump flash, I thought maybe I could let that finish and then flash it back to stock and start over.

Any suggestions would be greatly appreciated-
Reflash with right map and be patient it should load.


-07 335i coupe
BMS charge pipe
Turbosmart BOV
VRSF down pipe
BMS WMI with single nozzle ( 10 )
JB4 map 3 w/bluetooth & antiliag
Afe intake filter
BMS intercooler
BMS tranny cooler
BMS Double baffle catch can
MHD BEF Racegas
Precision Raceworks Coil
-Running 91 octane with WMI
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Rushan Rushan is offline
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Default 08-02-2019, 09:34 AM

Ok the question is flash back end Map and flash custom Map

What's the difference using any of those options of you are flashing the BMS that copied to the stock bin?

Not so sure but I read somewhere before 1 of those has different load limits but cant find the info.


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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Dave @ BMS/Fuel-It! Dave @ BMS/Fuel-It! is offline
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Default 08-02-2019, 11:49 AM

Quote:
Originally Posted by Rushan
Ok the question is flash back end Map and flash custom Map

What's the difference using any of those options of you are flashing the BMS that copied to the stock bin?

Not so sure but I read somewhere before 1 of those has different load limits but cant find the info.
backend map = our stuff

custom flash- would be a modified map usually supplied by a custom tuner etc.



http://www.fuel-it.biz/

e92 AT 335xi 2.0
Doc Race Kit 6062
Fuel-It!Platinum DIY PI Kit + Stage 2BL
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yellowfin yellowfin is offline
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Default 08-02-2019, 05:01 PM

In MHD, "backend flash" is for the cheaper JB4 license. In this case, there is a WGDC limit set when flashing. With JB4, it does not matter, because JB4 overrides the WGDC tables anyways. For "custom flash", you need the full license, which is a bit more expensive. Then you can adjust the WGDC for bef-only tuning.
Another small difference is in the options, e.g., "backend flash" does not show the 3.5bar TMAP option, because with JB4, you leave the bef voltages as stock and set the 3.5bar option in JB4.


2007 335xi (I8A0S kline) -- VTT GC lites + inlets + outlets -- Fuel-it stg 2 lpfp -- CPE catted **, FMIC, CP -- Tial BOV -- BMS DCI + OCC
JB4 + BMS bef (E50)
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chriskirgan chriskirgan is offline
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Default 08-13-2019, 12:47 AM

2009 BMW 335i
JB4
I am trying to do a backend flash and I am getting a code that says could not connect to DMC. I am using a new BimmerGeeks PRO K+DCAN and I have tried using amazon fire 8 tablet and Samsung note 3 both with the same result. I am getting a red light that stays on for a few seconds when I first plug into the ODB2. I did exactly what the directions said to do a ton of time making sure I have the newest JB4 version and making sure I am on map 0. I don’t know what else to do to get this working.
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Rule77 Rule77 is offline
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Default 08-13-2019, 05:19 AM

Quote:
Originally Posted by chriskirgan
2009 BMW 335i
JB4
I am trying to do a backend flash and I am getting a code that says could not connect to DMC. I am using a new BimmerGeeks PRO K+DCAN and I have tried using amazon fire 8 tablet and Samsung note 3 both with the same result. I am getting a red light that stays on for a few seconds when I first plug into the ODB2. I did exactly what the directions said to do a ton of time making sure I have the newest JB4 version and making sure I am on map 0. I donít know what else to do to get this working.

It could just be a bad cable. I know the Bimmergeeks cable is really good.. I have one to but itís possible that it might be bad. I would contact Bimmergeeks and see if they would send you a replacement if itís new.


08 E90 335i
Montego Blue
JB4/MHD E85 BEF
BMS DCI
BMS OCC
BMS Cowl Filters
VRSF ⬇️ Pís
MMP Chargepipe
TIAL BOV
BMS Pedal Tuner
BMS PCV VALVE
NGK 97506 @ .022
STAGE 2 LPFP
H&R Springs
19' 666m Wheels
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Default 08-28-2019, 01:30 PM

Need some advice please?

Iím currently running e30 and every other tank 93. If I want to increase to e40 do I need to change to the E85 bef? And Iím assuming if I do that I canít do every other tank straight 93?

Thanks in advance


08 E90 335i
Montego Blue
JB4/MHD E85 BEF
BMS DCI
BMS OCC
BMS Cowl Filters
VRSF ⬇️ Pís
MMP Chargepipe
TIAL BOV
BMS Pedal Tuner
BMS PCV VALVE
NGK 97506 @ .022
STAGE 2 LPFP
H&R Springs
19' 666m Wheels
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THE BEAST THE BEAST is offline
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Default 08-28-2019, 01:38 PM

Quote:
Originally Posted by Rule77
Need some advice please?

Iím currently running e30 and every other tank 93. If I want to increase to e40 do I need to change to the E85 bef? And Iím assuming if I do that I canít do every other tank straight 93?

Thanks in advance
Whats the point of doing that ? Switching fuels every other time ?
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Default 08-28-2019, 01:48 PM

I donít have to but itís easier to get the exact amount of E85 mixture without guessing how much e30 is still in the tank. I havenít been doing this very long and donít want to mess anything up.


08 E90 335i
Montego Blue
JB4/MHD E85 BEF
BMS DCI
BMS OCC
BMS Cowl Filters
VRSF ⬇️ Pís
MMP Chargepipe
TIAL BOV
BMS Pedal Tuner
BMS PCV VALVE
NGK 97506 @ .022
STAGE 2 LPFP
H&R Springs
19' 666m Wheels
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THE BEAST THE BEAST is offline
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Default 08-28-2019, 01:57 PM

Quote:
Originally Posted by Rule77
I donít have to but itís easier to get the exact amount of E85 mixture without guessing how much e30 is still in the tank. I havenít been doing this very long and donít want to mess anything up.
Why not do e30, and when you are running low, just add an e30 mixture again for however many gallons are needed to top off ? Whats left in the tank is irrelevant.
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Default 08-28-2019, 02:12 PM

Thatís the thing.. I donít know exactly how many gallons are left in the tank. I guess I could figure it out and then know how much 93 and E85 to put in to top it off.


08 E90 335i
Montego Blue
JB4/MHD E85 BEF
BMS DCI
BMS OCC
BMS Cowl Filters
VRSF ⬇️ Pís
MMP Chargepipe
TIAL BOV
BMS Pedal Tuner
BMS PCV VALVE
NGK 97506 @ .022
STAGE 2 LPFP
H&R Springs
19' 666m Wheels
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THE BEAST THE BEAST is offline
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Default 08-28-2019, 02:21 PM

Quote:
Originally Posted by Rule77
Thatís the thing.. I donít know exactly how many gallons are left in the tank. I guess I could figure it out and then know how much 93 and E85 to put in to top it off.
Fuel gauge not working ? Every 1/4 is roughly 4 gallons. Easy to figure out and safer so you maintain proper octane for whatever tune or map you are running.
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Default 08-28-2019, 04:02 PM

Quote:
Originally Posted by THE BEAST
Fuel gauge not working ? Every 1/4 is roughly 4 gallons. Easy to figure out and safer so you maintain proper octane for whatever tune or map you are running.
Thanks! So if Iím gonna go e40 should I change to the E85 bef?


08 E90 335i
Montego Blue
JB4/MHD E85 BEF
BMS DCI
BMS OCC
BMS Cowl Filters
VRSF ⬇️ Pís
MMP Chargepipe
TIAL BOV
BMS Pedal Tuner
BMS PCV VALVE
NGK 97506 @ .022
STAGE 2 LPFP
H&R Springs
19' 666m Wheels
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