F Chassis N63TU JB4
 

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Installation is the same as the n63 connecting to each TMAP sensor on the intercooler and running the OBDII cable under the dash. Additionally the MAF connectors (on the to of the engine) must be unplugged for the n63tu JB4 to function properly.

V2 systems now also include optional built in BCM connections which can be attached for those looking to push higher boost levels.


Dyno Testing:

3/17/17: New n63tu dyno record here! http://www.n54tech.com/forums/showpo...1&postcount=28
5/1/17: Broke the 600whp barrier! Yet another n63tu record: http://www.n54tech.com/forums/showpo...1&postcount=64

Firmware:

Note that older system shipped with a V1 EWG board while systems shipped after 2019 include a V2 PWG system. The V1 EWG board does not have BCM connections and will not operate with the V2 PWG firmware.

Map guide:

Map0: JB4 disabled
Map1: Additive map, up to 5psi requested over stock
Map2: Additive map, up to 6psi requested over stock
Map3: Absolute map, 18psi peak, BCM suggested
Map4: Stock with CANbus active for logging and in dash gauges
Map5: Absolute lower torque map ramping up to 20psi at redline, BCM required
Map6: User definable map generally used for diagnostics
Map7: Absolute map, 23psi peak, BCM + fuel control wires required
Map8: Progressive WMI map, boost varies based on meth flow and boost additive on the WMI page. BCM suggested.

Optional fuel control wires:

Not included with the JB4 system but can be added to V2 PWG boards for those looking to run higher boost levels or E85 mixtures. Also a bit of a DIY project. You'll need to identify your fuel pressure connectors at the end of the fuel rail, determine if they are "large" or "small" style, order 2x fuel pressure connectors from our website, and extend the wires on one as required to reach the fuel pressure connector. The JB4 pins for the connectors are posted in the photo here: N54Tech.com - International Turbo Racing Discussion - View Single Post - F Chassis N63TU JB4

How to update firmware:

For firmware updates if having issues we suggest you turn off WiFi, change upload timeout to 25, and set your phone next to JB4 box under the hood.

Download firmware using the new JB4 Mobile firmware database or externally by clicking this link.

Looking forward to this! 2013 750li n63tu, I want in on this! I thought you all forgot about the TU

Looking forward to it! 2016 750xi here, love the potential this engine has for tuning

Sweet! Nice work! Huge gains per $ !

:clap:

Did you find any limitations on the top end? Turbos or HPFP or Octane?

Great work

Optional fuel pressure connections for V2 board

Hell yea. I want a ride tomorrow!

UPDATES! lol, I know she has a lot more left in her! Nice work!

I hope the trans holds! lol. If only we could reach that 2nd boost solenoid there is another 50hp at our fingertips. I guess worst case might be to make the BCM posi-tap installed somehow for the really hardcore guys.

the trans can hold torque more than the f10 m5

Heard this before as well? Wonder how true this is? 🤔

Seen a FBO 2014 550xi Flash Tuned & was beating on M5 Competition Pkg w/ BMS stag1 in a quick roll-race

That's sick! I know these motors have tons of potential!

Is there a time frame when the JB4 will come out for the 550I?

Where exactly are those solenoids? If the "hardcore guys" are anything like me, they'd rather do some disassembly for access than use posi taps.

We'll post more info on adding a BCM to the n63tu once we're further along in development.

NICE GAINS! your N63 and N63tu baselines are very close 408/407hp and 456/466tq...
Once you added the JB4, Do you think your prototype intake played a major role in the huge power and tq spread vs the N63's dyno?


http://i68.tinypic.com/a8qch.jpg

http://i66.tinypic.com/14d0w7c.jpg

great news !!!!!
i have 2013 bmw 750i
stage 1 flash tune
8.0 sec 100-200 kmh (62-124 mile) race logic
cant wait to add jb4 to gain some power

We're not yet sure to what degree the intake has added performance. We're waiting for the next revision and then will dyno it vs. stock. Unfortunately, it's the height of our busy season, and with so many projects under development, there is little time to go around. We'll get it done though.

Can wait
Good luck
Interesting what we can do with back and flash + jb4 on n63tu engine
Now I'm producing
499 whp on dyno mustang
And 78 kgm

Meth injections
30% e85
And some logs and tune with the jb4
I thing it will be a huge difference
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Got a picture or graph?

Yes but it's on my phone not on my pc
And sorry but I don't know how to upload pics from my phone here/:

Hum..... gotta do some research on the 550/750 xDrive system. A 700hp+ 750LiX would be awesome. B7, S8 Plus and S65 killer.

EDIT: That was easy. All BMW cars, from the 1 series to the F02 B7, use the same ATC35 transfer case. The X5/X6 use the ATC45 (or ATC700 for the M's). So its the 8HP70Z, ATC35 combo. Should be pretty safe, up to the driveshaft at least.

BTW Terry, Did you ever find out about that 550 that was losing power with the DP? Its been a while, but I think it was cutting boost or something above 4000rpm? I'm going to assume this fixes that?

Terry,

Will the BMS prototype intake system fit on the Straight N63 or non TU, if so when do you expect release date?