JB4 MHD Back End Flash (BEF) development underway!

[Mike@N54Tuning.com]

Saw this posted on BMS' forum and thought you guys might enjoy following along:

Was able to flash our M3 today using the MHD BETA tools, so easy! Back end flash development is full swing ahead.

Among the top tuning priorities are a 0-100% E85 auto tuning map, where you mix in whatever fuel you want and the JB4 sorts out the details to safely extract the most power from whatever fuel you happen to be running, and a BEF designed to optimize lower grade fuels like 91 octane. In addition we're going to add some logging channels to the JB4 also to facilitate working with back end flash mapping like the LOAD index.

As always our JB4 BEF maps will be published fully unlocked and free of charge so those who like to tweak things themselves can fine tune and adjust as much as your heart desires.

[DLSJ5]

Originally Posted by Mike@N54Tuning.com

Saw this posted on BMS' forum and thought you guys might enjoy following along:

Very cool Mike. I knew Terry had something in the works, this is great news.

[FriedPiston]

Good things come to those who wait!

[DLSJ5]

Originally Posted by nars3000

Good things come to those who wait!

Agreed, no doubt there are some really good ECU flash options out there that perform very well. But performance wise I've seen nothing that would convince me an ECU flash performs any better than the JB4 on stock turbo's. The car has ran flawless as a daily driver and at every event I've raced at it's performed very well against plenty of strong competitors.

The one option that did get me interested in a ECU flash was PaulF80's full E85 tune, and that 132.xx trap speed on stock turbos, as well as his work on the Pure Turbo Full E85 tune and Full E85 with Meth, on the stock fuel system, incredible results there.

Now with this BEF, Terry focusing on the 100% E85 tune with the JB4 acting as a flex fuel sensor and everything else it does, it's the best of both worlds IMHO.

[FriedPiston]

Originally Posted by DLSJ5

Agreed, no doubt there are some really good ECU flash options out there that perform very well. But performance wise I've seen nothing that would convince me an ECU flash performs any better than the JB4 on stock turbo's. The car has ran flawless as a daily driver and at every event I've raced at it's performed very well against plenty of strong competitors.

The one option that did get me interested in a ECU flash was PaulF80's full E85 tune, and that 132.xx trap speed on stock turbos, as well as his work on the Pure Turbo Full E85 tune and Full E85 with Meth, on the stock fuel system, incredible results there.

Now with this BEF, Terry focusing on the 100% E85 tune with the JB4 acting as a flex fuel sensor and everything else it does, it's the best of both worlds IMHO.

This is exactly how I feel about the JB4 vs a flash-based tune. Either option is good in their own right, but I just didn't see any benefit in going from JB4 (Map 2/Map 7) to a Stage I-II flash tune while on stock turbos.

Like you, I've never had any issues with the JB4 at the raceway or as a daily driver, and the only thing that remotely piqued my interest was a full E85 flash tune. However, I did reach out to Terry about possibly getting this done on the JB4, and he explained the current limitations with the way they have the firmware setup while making the DME unaware of the fuel-trim changes.

Those with a JB4 should expect to see more development from BMS on top of the E85 BEF.

[nyc f82]

Looking forward to this!

[Mike@N54Tuning.com]

BMS is ready for a few testers to help log and evaluate the mapping options.

First you'll need to contact MHD to get in their F series test group. Then you'll use MHD to flash map0, take a backup of your factory BIN, then email that factory BIN backup to BMS along with details on the car like mods, fuel, tuning goals, and they'll send the most appropriate BEF. You DO NOT need to purchase any MHD map package or logging package since the JB4 does that for you.

Mike

[mitch32]

What would be the advantage of the JB4 with a BEF/MHD? Right now can't JB4 run 100% E85 regardless?

[Mike@N54Tuning.com]

Originally Posted by mitch32

What would be the advantage of the JB4 with a BEF/MHD? Right now can't JB4 run 100% E85 regardless?

No you can't run 100% E85 JB4 only. But will be able to with the BEF. Other changes are boosting calculated torque to the DCT transmission, advancing timing over stock levels, removing the speed limiter, VANOS changes, AFR optimizations, and other tweaks that adding in the BEF unlocks.

Mike

[mitch32]

Originally Posted by Mike@N54Tuning.com

No you can't run 100% E85 JB4 only. But will be able to with the BEF. Other changes are boosting calculated torque to the DCT transmission, advancing timing over stock levels, removing the speed limiter, VANOS changes, AFR optimizations, and other tweaks that adding in the BEF unlocks.

Mike

Is the BEF detectable by the dealer?

[Mike@N54Tuning.com]

Originally Posted by mitch32

Is the BEF detectable by the dealer?

Yes any OBDII flash including a BEF can be easily detected by dealerships, even when removed. That is one of the big advantages of running JB4 only. You can remove it with no trace left behind. But if you want to play sometimes you need to pay!

Mike

[parabmw]

Jb4 is equally detectable by dealer.
Jb4 will cause more harm than a flash too.
Save your engine!

[whitefrs]

Do i smell flex fuel??

[5soko]

This is gonna be badass!! The ultimate tuning solution

[Mike@N54Tuning.com]

They've added JB4_OBDII_M3_1_8 firmware, which includes the new logging parameters load and calculated torque. Load is used as an index for the back end flash tables and calculated torque is used to evaluate internal torque limiters, and ensure the DCT is seeing full clamping force when under higher torque operation. BMS will ask you to update your JB4 firmware when participating in the BEF testing.

Mike

[Mike@N54Tuning.com]

A couple customer test logs I saw from S55 back end flash development. Test car is a CP running JB4 controlled WMI. First log is the stock flash as a reference. Second is a version of the BEF. The flash target has been scaled up, timing, fuel target, and fuel trims remapped, throttle and pedal scaling adjusted, VANOS adjusted. Still early days but good things are in the works.

Mike

[Mike@N54Tuning.com]

Logs

[schnazzy]

Mike, et al.,

Love the new developments.... a few questions.

So if I have:
Android (note8) phone
BimmerGeeks ProCable
CTG cable for Android
CTEK 7002 battery charger*
MHD Flasher Licenses for S55 ($299)**

Then what? Email terry for the correct BEF?

Lots of questions...
Is that an OK charger? I think the M4 has a lithium battery. What are people using for keeping the battery with enough juice during flash?

I saw a YouTube video and they showed the JB4 BEF was only $79 (but it was a different BMW chasis). Is it $299 for me? Do I need the "monitoring license"? Do I need to buy any maps from MHD?

I have:
Pure Hiflow Turbos
JB4 (need to upgrade to the latest flash), with EWG hooked up
Akra catl es pipes
Mperformance Exhaust with cats
Might get BMS air intakes but not sure (mostly for sound

I get we are on the bleeding edge right now but I am swapping through multiple pages on multiple sites and so far I haven't seen enough info like basic instructions (for basic people like me) or dynos on pump gas.

I'd like to run on 97RON 92 octane most days (could put 1octane of booster each tank if needed). Just wonder where I might be with RWHP (range)

I'd like to run 100 octane race fuel for dyno glory but how do I switch....

Do I just do it like I do now? Map 2 for 92 octane and Map7 for 100 octane dyno day? Once the MHD BEF is loaded I leave it alone and still just switch maps with the JB4?

Also I may want to run E85 sometimes. I'd prefer to just "fill up" the whole tank (probably when tank is 25 miles until empty which is about 10% based on how I drive). Then so I just use Map6 and no other needs? (more regular fuel mixed to make it more 50%)?

THANKS!

[Mike@N54Tuning.com]

Originally Posted by schnazzy

Mike, et al.,

Love the new developments.... a few questions.

So if I have:
Android (note8) phone
BimmerGeeks ProCable
CTG cable for Android
CTEK 7002 battery charger*
MHD Flasher Licenses for S55 ($299)**

Then what? Email terry for the correct BEF?

Lots of questions...
Is that an OK charger? I think the M4 has a lithium battery. What are people using for keeping the battery with enough juice during flash?

I saw a YouTube video and they showed the JB4 BEF was only $79 (but it was a different BMW chasis). Is it $299 for me? Do I need the "monitoring license"? Do I need to buy any maps from MHD?

I have:
Pure Hiflow Turbos
JB4 (need to upgrade to the latest flash), with EWG hooked up
Akra catl es pipes
Mperformance Exhaust with cats
Might get BMS air intakes but not sure (mostly for sound

I get we are on the bleeding edge right now but I am swapping through multiple pages on multiple sites and so far I haven't seen enough info like basic instructions (for basic people like me) or dynos on pump gas.

I'd like to run on 97RON 92 octane most days (could put 1octane of booster each tank if needed). Just wonder where I might be with RWHP (range)

I'd like to run 100 octane race fuel for dyno glory but how do I switch....

Do I just do it like I do now? Map 2 for 92 octane and Map7 for 100 octane dyno day? Once the MHD BEF is loaded I leave it alone and still just switch maps with the JB4?

Also I may want to run E85 sometimes. I'd prefer to just "fill up" the whole tank (probably when tank is 25 miles until empty which is about 10% based on how I drive). Then so I just use Map6 and no other needs? (more regular fuel mixed to make it more 50%)?

THANKS!

Since you have larger turbos and plan to use lower grade fuel I'd work with BMS directly for custom mapping, they have Pure S2 turbos on their development M3, and stock turbos on their development M4, so have each in the stable for development.

Mike

[MarinoB]

I have bolt on mods and have been running map 2 on 93 octane. What benefits can I see with a BEF? The DCT advantages and burble trick is enough for me to go for it but I’m curious if I’m going to see better drivability, more consistency, squeeze out some more power...etc.

[FriedPiston]

Originally Posted by MarinoB

I have bolt on mods and have been running map 2 on 93 octane. What benefits can I see with a BEF? The DCT advantages and burble trick is enough for me to go for it but I’m curious if I’m going to see better drivability, more consistency, squeeze out some more power...etc.

You can find all of the answers here: https://goo.gl/NnVezS

Just an update to this, I'm currently testing a full E85 BEF revision on Map 7 with Terry's help and guidance. Everything is a work in progress, but right away you can feel the power delivery is much improved. Earlier today, I was making a simple lane change on the highway, and maybe had the throttle at 30% open in 4th gear, when the car completely caught me by surprise on how much it wanted to keep moving. As crazy as it sounds, it almost felt like the cars around me were standing still.

As for the MHD beta front, I've had no issues at all with flashing, and I'm using a generic eBay K+DCAN cable that I purchased over 3 years ago, but never got to use. I also had the car running on battery for a little over an hour (10-15 mins JB4 firmware update + 45 minutes MHD Stage 0 flash + 5 minutes JB4 BEF flash) without any hiccups. Although, I would strongly recommend a battery charger considering the amount of time it takes to do the initial Stage 0 MHD flash.

[F80_M]

This is awesome news!! Def interested in this!