Dme tune and jb4

[Djvolume]

Is anyone here running jb4 with dme tune?

[Djvolume]

Is any running a dme tune along w jb4? If so please post your impressions ups and downs, I just wanted to hear every once opinion on if it is safe to run those two parallel

[Mike@N54Tuning.com]

BMS is testing free back end flash maps you load using the MHD software, meant to optimize the DME for the JB4 tuning. Best of both worlds. Details are on n54tech.

Mike

[Djvolume]

Originally Posted by Mike@N54Tuning.com

BMS is testing free back end flash maps you load using the MHD software, meant to optimize the DME for the JB4 tuning. Best of both worlds. Details are on n54tech.

Mike

My f83 already has a dme tune, my question is I could safely run jb4 on top of it

[EALm4]

Originally Posted by Djvolume

My f83 already has a dme tune, my question is I could safely run jb4 on top of it

I run a bm3/jb4 stack and it's perfectly fine. What are you trying to accomplish?

[Agent - ///M]

Originally Posted by Djvolume

My f83 already has a dme tune, my question is I could safely run jb4 on top of it

I really don't think there's a benefit. I sold
my jb4 once I went with the DME Flash.

[mike@x-ph.com]

Originally Posted by Agent - ///M

I really don't think there's a benefit. I sold
my jb4 once I went with the DME Flash.

On top of the extra power, you get to take advantage of all the JB4's features.

[Agent - ///M]

Originally Posted by mike@x-ph.com

On top of the extra power, you get to take advantage of all the JB4's features.

What added features do you get with JB4 that you don't get with BM3?

[EALm4]

Originally Posted by Agent - ///M

What added features do you get with JB4 that you don't get with BM3?

Meth, boost control, boost by gear, PI, easy data logging (no need for Bm3 agent device but assuming you have the JB connect kit), active sound delete (Bm3 option may potentially delete the burbles...so says the app), LED max brightness, on the fly CAN flap control.

If you want to get crazy with things, it is possible to run both the BM3 agent device and JB4 connect at the same time.

While a minor feature, the JB4 connect has the ability to auto log once certain parameters are met...such as pedal/throttle/WOT and continue to log for X amount of time set by the user once the parameters are not met. Logging with the BM3 has to be manually initiated.

For most either the JB4 or BM3 alone is good enough. JB4 w/ connect kit provides some convenience and options to tinker with.

[schnell1982]

Originally Posted by Djvolume

Is any running a dme tune along w jb4? If so please post your impressions ups and downs, I just wanted to hear every once opinion on if it is safe to run those two parallel

Mo (DME Tuning) is the one you want to talk with about stacking the JB4 onto his flash. The tuner will be making adjustments to the tune based on what you are trying to accomplish power wise.
Many different brands "tunes" have been staked with JB4's

[TheHouseWon]

I run BM3 OTS with JB4 and it's strong!

[jxc888]

Hi! Been trying to find the back end flash which burger is trying out for the s55 platform. I saw you mentioned that it’s available I wanna try it where can I download or check it out? Thanks!

[Mike@N54Tuning.com]

Originally Posted by Agent - ///M

What added features do you get with JB4 that you don't get with BM3?

The FAQ from the F series back end flash thread:

FAQ:

What benefits does a back end flash map add to the JB4?

Adding in the back end flash map allows JB4 adjustment over a wider
range of engine parameters than are available on the factory flash.
Including direct adjustment of timing and fueling tables, VANOS
adjustment, fuel scalar adjustment for heavier E85 mixtures than
possible JB4 only, speed limiter delete, optional exhaust burble,
higher calculated torque reported to the automatic transmission, and a
host of other parameters than are only possible via flashing the DME.

What are the benefits of running a JB4 with a flash rather than flash
only for tuning?

While it's possible to tune an F series without a JB4 doing so comes
with many disadvantages.

1) With JB4s unique features and logic paths, combined with the
flexibility of adjusting DME tables directly via the back end flash
map, you get better quality, safety, and more powerful tuning. The JB4
includes more robust safety systems than are possible via flash only.
Starting with fundamental safety systems like reverting to a safety
map if boost exceeds your safety setting, if the air/fuel ratio in
either bank turns dangerously lean, or if fuel pressure drops below a
safe level. While you might think the DME alone can handle these basic
safety systems surprisingly it's not the case. The DME will happily
let you run along at full power and a 18:1 AFR, with boost pegged, and
the only fuel pressure safety provided is when fuel pressure drops
down so low fuel injection itself has to be suspended.

2) More mapping options including absolute boost target maps. The JB4
boost control system is programmed to offer both absolute and additive
maps. Absolute meaning you'll always target a specific boost level.
Unlike the DME which naturally implements a LOAD control system where
boost levels go down when it's cold and go up when its warm. The
opposite of what you generally want for turbocharged performance. In
addition the JB4 is quick and easily adaptable to a wide range of
setups eliminating the need for expensive custom boost tuning and the
risks that come with repeated logs on systems that are not yet setup.
It's not uncommon for engine damage to occur while a new setup is
initially being dialed in. The JB4 automatically tunes wastegate
dutycycle, fuel trims, and other important tuning criteria full time
in the background greatly simplifying the tuning process. In addition
the JB4 auto-tuning map can self tune for various ethanol mixtures
without the need of an expensive and difficult to install flex fuel
sensor. Pedal to boost mapping, spool aggression, boost by gear, and
other critical factors can be easily adjusted to suit the needs for
the particular track or racing situation.

3) On the fly changes. Whether it's changing the boost/power level,
boost by gear setting (including being able to disable it on the fly
for burn outs or if traction turns out to be better than expected),
pedal input, exhaust flap position, or what gauges are shown in dash,
the JB4 allows a wide range of user adjustment real time from the
drivers seat without having to use a 3rd party device or risk
programming the DME between runs. You're able to make the changes
while out on the track where you need to make them.

4) The JB4 allows for much better real time feedback to the driver.
User adjustable in dash gauges allow you to keep a constant eye on
boost, timing, knock, meth flow, and/or AFR, all selectable and
changeable on the fly from the drivers seat. A user adjustable shift
light can be triggered making rowing through the gears easier. JB4
Mobile allows wireless bluetooth logging via your Android or Apple
phone without a cable locked in your OBDII port. In addition you can
select map0 on the fly to allow OBDII port logging and diagnostics
when needed for vehicle service. The JB4 default logging set includes
all relevant data required for tuning including boost, timing
cylinders 1-6, AFR and fuel trims in both banks, high and low fuel
pressure, load, calculated torque, trans temperature, and many other
parameters. The JB4 provides a simple to use but incredibly robust
data logging system eliminating the need to select what parameters to
record before each run and providing instant on the fly charting
without the need of 3rd party internet programs. We routinely add
parameters to the JB4 logging set based on customer feedback and
evolving tuning requirements.

5) Integrated JB4 features such as anti-lag, port injection control,
flex fuel sensor, and progressive water/meth (WMI) control eliminate
the need for independent add on boxes that are more difficult to
install and technically unable to communicate with each other.
Integration allows these extra features to share information for a
smooth and cohesive tuning solution. When the DME requests a torque
drop due to traction or stability control the JB4, WMI, and PI systems
all respond accordingly. WMI integration is able to hold boost levels
low UNTIL fluid is flowing adequately to prevent spool up and
transitional knock, adjust your boost target if the fluid being
injected turns out not to be as potent as was expected or required to
prevent knock, and in the event of a fail-safe depending on the
severity of the situation either lower your boost target partially OR
instantly dump boost out the diverter/close the throttle/cut timing.
These are just some of the many examples of why having add on boxes an
features all integrated through a single system is advantageous.

6) Free maps for life. The JB4 is widely used and widely supported
including free unlocked back end flash maps and custom mapping support
from BMS via the n54tech support forum. BMS sponsors and attends
several 1/4 mile and 1/2 mile races per year continuously improving
the JB4 base maps and features based on real world experience and
feedback. These updates are provided free of charge to JB4 customers
via n54tech firmware posts.

7) The JB4 hardware is robust, reliable, highly developed, and
upgradable, with many thousands of systems in use since 2008 when it
was first released. The key to the JB4’s success is that it DOES NOT
replace the factory engine computer or DME. The JB4 simply adds on to
functionality already provided by the DME. As a result the DME remains
in full control of your engine at all times with the JB4 dynamically
making small but impactful adjustments to add in extra safety systems
and features and dramatically improve performance. And unlike
disposable flash maps the JB4 is a physical system you can remove and
resell down the road.

Once I flash the DME can the dealership tell? What if I flash it back to stock?

Modifying your vehicle is not without risks and we believe flashing
the DME is traceable even if flashed to stock. If you are really
concerned about your warranty, it's best not to flash your vehicle.
That said when used in conjunction with the JB4's expanded safety
systems and mapping use/guidelines, expect a relatively high level of
reliability at the elevated power levels.

What flash time options are available?

Certain settings can be toggled on/off or adjusted during the flashing
process itself. Including the user adjustable exhaust burble settings,
speed limiter delete, cold start delete, CEL delete, etc. MHD will be
adding these as their development progresses.

[mike@x-ph.com]

Originally Posted by Agent - ///M

What added features do you get with JB4 that you don't get with BM3?

This video talks about the N54 engine but same features apply to your car