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  1. #1
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    Jb4 install help

    Hi, my tuner tried to install my jb4 and my car responded horribly to it. The jb4 made my car undriveable but yet it didnt throw any CELs. Also when we took it off the car ran fine. We checked all the connevtions and installed the jb4 again and the car ran like $#@! again. So at this point its off the car and im waiting for a answer from bms support. Do you guys h have any insight?

  2. #2
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    Could be installation error. Is it the plug-n-play version or the pin-out?

  3. #3
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    98% of the time it's a backwards connector. Any time an install related error comes up your first steps should be to take a photo of the install and then email those photos in for assistance.
    Burger Motorsports
    Home of the Worlds fastest N20s, N54s, N55s, N63s, S55s, 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 see http://www.burgertuning.com/emissions_info.html for more information on legal requirements related to use of BMS parts.

  4. #4
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    Thanks for all the help Terry, I'm not sure if you got my most recent email but i did find a JB+ in my car. So I hope that was what was causing all of the problems. My JB4 is still being shipped to you right now so I wont know for sure until you can take a look at it.

  5. #5
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    Click here to enlarge Originally Posted by joeBMW628 Click here to enlarge
    Thanks for all the help Terry, I'm not sure if you got my most recent email but i did find a JB+ in my car. So I hope that was what was causing all of the problems. My JB4 is still being shipped to you right now so I wont know for sure until you can take a look at it.
    Terry will take good care of you, this will get sorted.

  6. #6
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    1 out of 1 members liked this post. Reputation: Yes | No
    Ya its funny my car was Certified pre-owned and came with a JB+! what are the odds of the BMW techs at the dealer not noticing that when they checked the car out.

  7. #7
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    Click here to enlarge Originally Posted by joeBMW628 Click here to enlarge
    Ya its funny my car was Certified pre-owned and came with a JB+! what are the odds of the BMW techs at the dealer not noticing that when they checked the car out.
    That's hilarious man I don't even know what to say.

  8. #8
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    HAHA, WTF, at least you still have a warranty!
    2011 335is DCT, JB4 + MHD BEF, stage 2 LPFP, e50 + 50/50 meth, FBO, MT ET Streets when needed


  9. #9
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    I hope I still have the warranty because the car was sold to me like this. I didn't even know what a JB+ was until after I bought the car, and it was their job to inspect the car lol.

  10. #10
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    WOw I can't believe they missed that! I've bought 2 certified pre owned bmw's and have had great luck with them, you'll be fine. Wait till you get the jb4 on, your 335 will wake up!
    Click here to enlarge
    ESS 6XX kit

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