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2010 2011 BMW 5 Series Forum F10 F10 Technical Topics DIY Guides & Discussions DIY: JB4 Stage 2 N55 Harness A
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      10-27-2014, 12:34 AM   #1
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DIY: JB4 Stage 2 N55 Harness A

Hi, Can someone explain and post a few pics for me about installing the JB4? i did not really understand the guide provided by BMS.

Thanks,
Andrew
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      10-27-2014, 12:39 PM   #2
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I have harness B but Im sure the rest of the install is the same (attaching the black wire to ground, red to power and the other two to the CAN wires). What do you need help with?
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      10-27-2014, 06:47 PM   #3
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Quote:
Originally Posted by Mr Clean View Post
I have harness B but Im sure the rest of the install is the same (attaching the black wire to ground, red to power and the other two to the CAN wires). What do you need help with?
I dont really know yet cause im still waiting for the jb4 to arrive. but i dont really understand the guide made by bms. I'm just wondering if someone made some video install guide for it. I'll get back to you if i need more help. thanks anyway bro, appreciate it.
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      10-27-2014, 08:20 PM   #4
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Quote:
Originally Posted by andrewlim View Post
I dont really know yet cause im still waiting for the jb4 to arrive. but i dont really understand the guide made by bms. I'm just wondering if someone made some video install guide for it. I'll get back to you if i need more help. thanks anyway bro, appreciate it.
Yeah man no worries. I might do an install video just because there are no sources for further clarification (other than contacting BMS). I had a shop try to install it and fail and at that point I just decided to do it myself. It wasn't hard at all, just double and triple check everything and you'd be alright. Make sure to get the usb cable because it is the only way you can change maps and read/clear codes. Let me know when your ready, you can post here or Pm me.
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      12-02-2014, 07:27 PM   #5
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Any updates would be appreciated. Agree with the OP, the info from BMS isn't that great. Only reason I haven't pulled the trigger is the install.
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      08-05-2015, 03:04 AM   #6
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I'm trying to install stage 2 jb4. Directions say to install all 3 connectors of wiring harness except the purple MAF connector? Installed it and don't feel like I've gained 60-80hp but engine runs fine.
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