E90Post
 


Lux Angel Eyes
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > DIY Guides > jb4 2step relay DIY writeup



Reply
 
Thread Tools Search this Thread
      08-07-2013, 11:38 PM   #1
dlakatos
First Lieutenant
8
Rep
365
Posts

Drives: 335i
Join Date: Apr 2013
Location: ocala fl

iTrader: (1)

jb4 2step relay DIY writeup

okay so i bought jb4 and the 2step relay, the directions by bms were very vague and pictureless, this diy is pictureless as well, but i am going to try and simplify it for all.

it seems like i was not the only one searching for info, so im going to try my best to help out, this is my first diy

it is easier than it seems, ill try to be as detailed as possible

first of all, i take no credit, a fellow e92 owner carl helped me out with a diagram and answered all my dumb questions, i probably wouldnt of figured it out without him, so much thanks to carl!

anyway here we go.

materials needed:
jb4 (duh)
jb4 2step relay (duh)
jb4 usb cable
small phillips and reg screw driver
tools you use to get to the ecu, 8mm, torx whatever else

okay so the relay comes with a separate split wire, this is the clutch wire.
then there are 3 wires coming out of the relay, one wire connected with a wire nut, a red wire, and two wire (blue/white) mine were blue and black

first i connected the wires that needed to be connected to the usb cable

1.take the usb cable, locate the part that would connect into your jb4 box (opposite end of the side that goes into your computer)

2. take out two small phillips screws to open up the connector.

3. place the pointy end of the split wire into the empty slot number 8 ON THE CONNECTOR, the numbers are different on the jb4 box.

4. place the pointy end of the wire coming off the wire nut into empty slot number 7 on the USB cable connector

5. close the connector up

now to connect the relay to your ecu/jb4

1. get to your ecu, i assume you all know how to do this by now!

2. pull the slider out of the small ecu sub connector, slide the slider out, slide the gray jb4 (with red wires) out of the sub connector.

3.un connect the stock harness from the jb4 connector.

4. hold the female end of the gray jb4 sub connector (with red wires) facing you.

5. locate the small numbers (see diagram) on the connector, it will say 26 on the left side and 14 on the right side.

6. count from the right side to 18, (14, 15, 16, 17, 18 bingo!)

7. this is the wire you need to take out, push in the little clips on both the female and male side and take the wire out completley and keep it somewhere same for later use

8. place the female and male sides of the split wire that is connected to your usb cable into the slots you just pulled the wire out of

9. yay we are done installing the clutch wire, you can put the connector back into the subconnector, slider in, and put it back onto the ecu and connect the stock harness back to the male end of the jb4 harness

10. pull the little green power connector from hell, out of its devilish position

11. on the same side that you pulled the orange wire to connect power to your jb4 unit, pull the other orange wire (#8)

12. place the red wire from your relay into that empty spot

13. take the orange wire you just pulled and connect it to your blue/white wire off your relay

14. basically done!!!

15. connect your usb cable into your jb4 box and tighten the screws

16. stuff the relay and jb4 back down into the empty slots

17. test before you put all the stuff back on

18. turn the car on, start jb4, go to speed number 8, set your rpm to what ever you like, 4k rpm maybe

19. now here is where i was a dumbass the first time i installed, you HAVE to push the gas pedal all the way down, i had it down half way and the rpm went past my set rpm so i cussed and took it all back out again!! im an idiot!

20. note: for NLS (no lift shift) to work you need to connect to your computer and set future use E to 100 i believe. but 2 step will work with out any computer connection.

i hope this helped!

ill post a vid of mine as well (mines set at 4k, muffler delete, tial bov, bms dci, jb4)




Last edited by dlakatos; 02-07-2016 at 10:10 PM.
Appreciate 0
      09-22-2013, 06:38 PM   #2
danmandle
Private
0
Rep
53
Posts

Drives: 2008 335xi
Join Date: May 2013
Location: Boulder, CO

iTrader: (0)

This was great except for the wires in the description are backwards. I should have looked at your diagram! Thanks for writing it up.
Appreciate 0
      01-07-2014, 02:38 PM   #3
dlakatos
First Lieutenant
8
Rep
365
Posts

Drives: 335i
Join Date: Apr 2013
Location: ocala fl

iTrader: (1)

Directions corrected, sorry about that!
Appreciate 0
      01-07-2014, 04:35 PM   #4
Cali*335i
Private First Class
United_States
4
Rep
112
Posts

Drives: E92 335i
Join Date: May 2010
Location: salinas

iTrader: (0)

Okay might be a dump question but here it goes can you do this to a auto?
Appreciate 0
      01-10-2014, 12:23 AM   #5
dlakatos
First Lieutenant
8
Rep
365
Posts

Drives: 335i
Join Date: Apr 2013
Location: ocala fl

iTrader: (1)

Quote:
Originally Posted by Cali*335i View Post
Okay might be a dump question but here it goes can you do this to a auto?
As far as i know it can only be done to manual transmission cars
Appreciate 0
      02-14-2014, 08:31 AM   #6
dreweezy
Private
1
Rep
88
Posts

Drives: 335i e92
Join Date: Nov 2012
Location: Los Angeles

iTrader: (3)

the photo/video links are broken
Appreciate 0
      02-14-2014, 05:53 PM   #7
dlakatos
First Lieutenant
8
Rep
365
Posts

Drives: 335i
Join Date: Apr 2013
Location: ocala fl

iTrader: (1)

Quote:
Originally Posted by dreweezy View Post
the photo/video links are broken
sorry abt that, photobucket being stupid. should be fixed now thanks
Appreciate 0
      04-26-2014, 01:24 AM   #8
Clovus6981
Enlisted Member
0
Rep
28
Posts

Drives: 07 335xi pre lci
Join Date: Sep 2013
Location: NJ

iTrader: (0)

Does the 2step activate without the clutch pedal being pressed down? If so how does it know if your driving? I ask because my 2step is installed and set at 4k and when I take off from a light with full throttle, rpms will limit to 4k which is what I have my 2step set at. Any ideas?
Appreciate 0
      05-23-2014, 11:28 PM   #9
dlakatos
First Lieutenant
8
Rep
365
Posts

Drives: 335i
Join Date: Apr 2013
Location: ocala fl

iTrader: (1)

Quote:
Originally Posted by Clovus6981 View Post
Does the 2step activate without the clutch pedal being pressed down? If so how does it know if your driving? I ask because my 2step is installed and set at 4k and when I take off from a light with full throttle, rpms will limit to 4k which is what I have my 2step set at. Any ideas?
it only works in 1st gear at a stop to build boost. will not work when moving.
Appreciate 0
      06-10-2014, 08:51 PM   #10
Tdanderson
New Member
Tdanderson's Avatar
0
Rep
18
Posts

Drives: 2007 BMW 335i
Join Date: Dec 2012
Location: Kansas City

iTrader: (0)

Garage List
2007 BMW 335i  [0.00]
There is a setting called transport mode on the jb4 that sets our rev limit to 4500
Appreciate 0
      06-16-2014, 12:27 PM   #11
2blu4u
Private
0
Rep
65
Posts

Drives: 07 Montego Blue 335i
Join Date: Jan 2012
Location: Columbia SC

iTrader: (1)

I used this to install mine and it works well although the practicality of using this feature will only be beneficial if you have the mods to support it i.e clutch,tires, differential....
Appreciate 0
      11-20-2014, 09:21 PM   #12
yanks4285
You Can Pay for School, But You Can't Buy Class!!
United_States
5
Rep
125
Posts

Drives: e90 335i/E82 135I
Join Date: Feb 2008
Location: southwest florida

iTrader: (0)

Quote:
Originally Posted by Clovus6981 View Post
Does the 2step activate without the clutch pedal being pressed down? If so how does it know if your driving? I ask because my 2step is installed and set at 4k and when I take off from a light with full throttle, rpms will limit to 4k which is what I have my 2step set at. Any ideas?
Mine is doing the same thing, I've double and triple checked the wiring, how did you fix the issue?
__________________
production # 3893xxx vin- 8VF22xxx options: black leather bmw assist int trim aluminum ipod/usb nav power front seats premium hi-fi sport package
Appreciate 0
      11-25-2014, 03:39 PM   #13
mashimarho
BMW Genius
mashimarho's Avatar
United_States
557
Rep
12,016
Posts

Drives: e92 LCI 335i xDrive™
Join Date: Mar 2010
Location: Mill Creek, WA

iTrader: (38)

Garage List
What ever happened to your vid?
__________________

My Progress: http://www.e90post.com/forums/showthread.php?t=770326
BBS&Forgestar///ER///BMS///AirLift///VRSF///ARKYM///DD///CYBA///STOPTECH///BMW Performance ///
Appreciate 0
      11-28-2014, 01:56 AM   #14
dlakatos
First Lieutenant
8
Rep
365
Posts

Drives: 335i
Join Date: Apr 2013
Location: ocala fl

iTrader: (1)

Quote:
Originally Posted by mashimarho View Post
What ever happened to your vid?
it should work if you click on the picture and it will redirect you to photo bucket
Appreciate 0
      11-28-2014, 09:54 AM   #15
mashimarho
BMW Genius
mashimarho's Avatar
United_States
557
Rep
12,016
Posts

Drives: e92 LCI 335i xDrive™
Join Date: Mar 2010
Location: Mill Creek, WA

iTrader: (38)

Garage List
Quote:
Originally Posted by dlakatos View Post
it should work if you click on the picture and it will redirect you to photo bucket
Ah.. That picture!
__________________

My Progress: http://www.e90post.com/forums/showthread.php?t=770326
BBS&Forgestar///ER///BMS///AirLift///VRSF///ARKYM///DD///CYBA///STOPTECH///BMW Performance ///
Appreciate 0
      11-28-2014, 11:37 PM   #16
Fundguy1
Major General
Fundguy1's Avatar
942
Rep
6,092
Posts

Drives: 335 e93
Join Date: Aug 2014
Location: Orlando, fl

iTrader: (0)

http://www.n54tech.com/flash_files/n54_nls_install.pdf

Doesn't anyone Google or send the great guys at BMS questions via email?
__________________
'08 e93 AW 335i 6MT,Vargas Stg 2+ 20T clipped,VRSF catless dps & 7"FMIC,ER chargepipe&Tial, MMP inlets&outlets,Motiv Stg 2 fuel rail&dual disc clutch/fly, JB4G5,MHD w/Motiv tune,Fuel-it Stg 3 LPFP,Wavetrac LSD w/lockdown, KwV2,M3(Strut brace,frt control arms,steering wheel)AKE blk sub bush,PSS 235/275,19x8.5et30&19x9.5et35,SmartTop,RE trans mounts,Msport rear bump & skirts,15%tint,ZSP knob,Stoptech rotors,226k miles
Appreciate 0
      12-10-2014, 03:52 PM   #17
dlakatos
First Lieutenant
8
Rep
365
Posts

Drives: 335i
Join Date: Apr 2013
Location: ocala fl

iTrader: (1)

Quote:
Originally Posted by Fundguy1 View Post
http://www.n54tech.com/flash_files/n54_nls_install.pdf

Doesn't anyone Google or send the great guys at BMS questions via email?
i made this a good year or so before that was published. or else i would've used it as well!
Appreciate 0
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -4. The time now is 03:11 PM.




e90post
e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2016, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST