F Series N20 4-banger JB4 - Page 38 - JB4tech.com

Vlad_M · 01-29-2015, 12:41 PM

Quote:

Originally Posted by Terry @ BMS

The factory connectors are not available, so the removable posi-taps are the only option, if you want CANbus access.

They can be installed anywhere along the CANbus wires so if staying is discrete is a concern pick a more hidden area like under conduit, etc, to add them. We've been using the posi-taps on CANbus wires for years and have yet to have any issues with them.

Thanks, Terry.

I'll give it some more thought and decide between Stage 1 and JB4.

LycanX4M40i · 01-29-2015, 01:16 PM

Quote:

Originally Posted by rustyminded

can you please do a 40-90mph or any video. just to compare it with racechip

Quote:

Originally Posted by seroga1986

This is all i have. 0-80mph. Map2. 21psi. 93 octane. DP. K&N drop in.

http://youtu.be/69EzMrcirXQ

This is good.. I'm 21-22psi too, no mods, 93 octane with Racechip
I beat X3 35i (same M-Sport as me, same DWS tires as me) by 2-3ft.

https://www.youtube.com/watch?v=yKodPDcK3BA

rustyminded · 01-29-2015, 02:51 PM

Quote:

Originally Posted by GuMMiBaEr

Terry: What about Canflap solution like N55 / S55 for us N20 engines?

Hey buddy, what is a canflap solution ?!

GuMMiBaEr · 01-30-2015, 03:05 AM

Quote:

Originally Posted by rustyminded

Hey buddy, what is a canflap solution ?!

Look at N55 or S55 section.
It`s for controlling you Exhaustflap via steering wheel to stay open or closed

Vlad_M · 02-01-2015, 03:19 PM

How important is the EWG harness, especially if I'm only interested in running Map 1?

edmundochan · 02-02-2015, 04:45 AM

Hello Terry

I just bought the jb4 few weeks ago. And my car model is BMW 420 ( 2014 ) . Today when i installed the JB4, i found that the the blue patch cannot connect to the hub. and also is it the purple patch is no need to connect as well ? An am i on the situation of " Stage 2 " ? or still in Stage 1. As i know that there is quiet a big different in different stage. Please Help. Thank you so much .

Best Regards
Edmundo Chan

Seraphblade@SG · 02-02-2015, 07:50 AM

Quote:

Originally Posted by edmundochan

Hello Terry

I just bought the jb4 few weeks ago. And my car model is BMW 420 ( 2014 ) . Today when i installed the JB4, i found that the the blue patch cannot connect to the hub. and also is it the purple patch is no need to connect as well ? An am i on the situation of " Stage 2 " ? or still in Stage 1. As i know that there is quiet a big different in different stage. Please Help. Thank you so much .

Best Regards
Edmundo Chan

The answer to your question can be found on the install guide on the first post... If u are talking JB4, that is a stage 2 product.

Do you even know if u have an EWG or PWG car?

edmundochan · 02-02-2015, 08:19 AM

My car is a EWG car . I wanna ask now I just installed the rainbow patch and brown patch . Is that already a fully installation of the jb4 stage 2 for my car ? Because the others patch I didn't connect to any hubs . Please help . Thank you

Best regards
Edmundo

Ando @ BMS · 02-02-2015, 11:15 AM

Quote:

Originally Posted by edmundochan

My car is a EWG car . I wanna ask now I just installed the rainbow patch and brown patch . Is that already a fully installation of the jb4 stage 2 for my car ? Because the others patch I didn't connect to any hubs . Please help . Thank you

Best regards
Edmundo

Correct. After that you just have the red, black, green and brown wires.
Green and Brown are the CAN wires. Follow the install guide for the wires I mentioned.

Terry @ BMS · 02-02-2015, 11:39 AM

Quote:

Originally Posted by edmundochan

My car is a EWG car . I wanna ask now I just installed the rainbow patch and brown patch . Is that already a fully installation of the jb4 stage 2 for my car ? Because the others patch I didn't connect to any hubs . Please help . Thank you

Best regards
Edmundo

If you need assistance just email in to tech support or post photos of your instal in the support section.

ggh300 · 02-08-2015, 10:18 PM

Quote:

Originally Posted by marcoac14

Are you sure your Hexon turbo upgrade is maxed out already?
A stock N20 is able to reach over 300 rwhp with a de*** d0wnpipe.

I tuned my 320i to 23/24 psi @ 3000 rpm and 20/21 psi @ 5500 (max power).
It made 330/335 rwhp on the dyno. Bear in mind I have an er de*** d0wnpipe and my engine has higher compression ratio (11:1) and ign timing is very agressive. It goes as high as 15. As long as octane is there, it will always make more power than a x28 engine.

I desperately need meth injection but I'm not able to tune boost properly yet. I'm waiting for Terry to release a new firmware that will allow us to vary FF across the rpm range. Btw, any news on this?

Hi marco.
I have a 320i with jb4. I am interested how you tuned? To reach that power. And what extra equipment do you have? Thanks.

marcoac14 · 02-09-2015, 10:36 PM

Quote:

Originally Posted by ggh300

Hi marco.
I have a 320i with jb4. I am interested how you tuned? To reach that power. And what extra equipment do you have? Thanks.

Hi ggh300,

My mods are: ER cless *********, M Performance exhaust and BMS JB4 (ewg + flex fuel wires).

Find log attached. Please note that this map is too aggressive, it's running too lean and timing drops are there definitely there. I do not daily drive on map6.

Since the car is running way higher than stock boost, it's necessary to increase FF whilst compromising boost target at low rpms, hence the overboost. To mitigate this, I set a way lower boost target down low.

Still wondering if Terry will ever come up with a variable FF solution and/or AFR control

for those who still have their cars under warranty and do not want to deal with ECU flashing yet.

Cheers

PS. That's crank hp

ggh300 · 02-10-2015, 11:54 AM

ok
mine is pneumatic, i only have jb4, flex fuel wires, and active autowerks exhaust. and only using map 5.

i am thinking in a ******** but, not sure.

i wold like to have maybe 15 hp more.

what mean when you say is running too lean?

ggh300 · 02-10-2015, 02:36 PM

Quote:

Originally Posted by ggh300

ok
mine is pneumatic, i only have jb4, flex fuel wires, and active autowerks exhaust. and only using map 5.

i am thinking in a ******** but, not sure.

i wold like to have maybe 15 hp more.

what mean when you say is running too lean?

Sorry i am thinking in a d7own P1pe

marcoac14 · 02-10-2015, 08:45 PM

Quote:

Originally Posted by ggh300

ok
mine is pneumatic, i only have jb4, flex fuel wires, and active autowerks exhaust. and only using map 5.

i am thinking in a ******** but, not sure.

i wold like to have maybe 15 hp more.

what mean when you say is running too lean?

It means there's much more air in the mixture than there's supposed to be.
All 320s I know run lean even stock, unlike the 328s.

Vlad_M · 02-13-2015, 09:27 AM

Finally pulled the trigger - and decided to go for the JB4 after talking to Mike about it.

Thanks Terry and Ando for answering my incessant questions - I am sure I'll have many more once the tune arrives and I get to installing it.

Seraphblade@SG · 02-18-2015, 11:56 PM

Now that the can flap is released as a standalone module, wondering when will N20 owners with the JB4 see that functionality.

GuMMiBaEr · 02-19-2015, 12:04 AM

Quote:

Originally Posted by Seraphblade@SG

Now that the can flap is released as a standalone module, wondering when will N20 owners with the JB4 see that functionality.

Ask Terry for Firmware.
It already works for N20, it tested it in January

He is a little bit slow on updating firmware for n20´s

rustyminded · 02-19-2015, 08:53 AM

Quote:

Originally Posted by Seraphblade@SG

Now that the can flap is released as a standalone module, wondering when will N20 owners with the JB4 see that functionality.

I have the firmware but stupidly i didn't realize that I have an exhaust that doesn't use a flap lol

Terry @ BMS · 02-19-2015, 10:03 AM

We're still working on development. I'm a bit concerned the way the N20 flapper firmware is implemented now may result in the DME staying awake longer than it should when the ignition is turned off. Which could drain the battery. So I'm evaluating that and working out possible solutions.

Duzambon · 02-19-2015, 11:02 AM

Quick doubt, I didn't understand the practical difference between JB4 Map0 and map4. I supposed that on both cases logs should look the same. Correct?

Map 0: JB4 disabled.
Map 4: Stock performance, JB4 on

Terry @ BMS · 02-19-2015, 11:11 AM

Map 0 disables CANbus so logs would not be done other than boost and non-CANbus channels.

seroga1986 · 02-19-2015, 01:00 PM

I had the battery changed twice under warranty. 2nd time they loaded a higher output alternator software. The "battery draining while stopped" light is on all the time. No matter if i leave a battery tender over night or not. So this is something JB4 might be causing?

Duzambon · 02-19-2015, 02:51 PM

How do I know if I got N20 JB4 BETA or a N54/55 JB4?

Ando @ BMS · 02-25-2015, 12:54 PM

Quote:

Originally Posted by Duzambon

How do I know if I got N20 JB4 BETA or a N54/55 JB4?

Email me a photo of what you got and I can verify it for you.