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pkwon9285 pkwon9285 is offline
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Default JB4 M2C out of control...sweeping all over the place - 08-19-2019, 07:15 AM

I just finished installing jb4 to my M2C and once i get to the menu to change maps, both needles are out of control. They dont stay in one place and constantly just sweeping around everywhere. Anyone else see this issue, if so, how'd you fix it?? TIA guys!

JB4 I installed came off my2016 F80 M3...I don't know if that makes any difference to the needles jumping around everywhere...
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Payam @ BMS's Avatar
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Default 08-19-2019, 11:35 AM

Are you on updated firmware?


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pkwon9285 pkwon9285 is offline
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Default 08-19-2019, 04:14 PM

I don't think so. How do update the firmware? I haven't done anything to the jb4 since purchase back in 2016, for my f80 m3. Will that fix the issue??
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Terry @ BMS's Avatar
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Default 08-20-2019, 10:02 AM

Known issue that was fixed with a firmware update. Email us if you need help with it.


Burger Motorsports
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It is the sole responsibility of the purchaser and installer of any BMS part to employ the correct installation techniques required to ensure the proper operation of BMS parts, and BMS disclaims any and all liability for any part failure due to improper installation or use. It is the sole responsibility of the customer to verify that the use of their vehicle and items purchased comply with federal, state and local regulations. BMS claims no legal federal, state or local certification concerning pollution controlled motor vehicles or mandated emissions requirements. BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways. Please click here for more information on legal requirements related to use of BMS parts.
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pkwon9285 pkwon9285 is offline
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Default 08-20-2019, 03:09 PM

no, unfortunately it still has the problem. it did, however, fix the needles jumping all over the place to a minimum. before it was really fast but now, slow. but, needles jumping all over theplace still goes on...what can be the issue??
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Default 08-20-2019, 05:42 PM

Email me a log at idle and I can work with you on it. Terry@burgertuning.com


Burger Motorsports
Home of the Worlds fastest N20s, N54s, N55s, S55s, N63s, and S63s!

It is the sole responsibility of the purchaser and installer of any BMS part to employ the correct installation techniques required to ensure the proper operation of BMS parts, and BMS disclaims any and all liability for any part failure due to improper installation or use. It is the sole responsibility of the customer to verify that the use of their vehicle and items purchased comply with federal, state and local regulations. BMS claims no legal federal, state or local certification concerning pollution controlled motor vehicles or mandated emissions requirements. BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways. Please click here for more information on legal requirements related to use of BMS parts.
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