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Car won’t run with JB4

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  • #1

    Car won’t run with JB4

    2022 ct4-v 2.7. 1st attempt, car idle rough for 3-6secs then dies
    code for boost sensor. Recheck connection, same results

    3rd try, disconnect jb4 from maff. Car started and idle perfect

    4th try, after talking to another ct4 owner who originally worked with burger in the development of the jb4 he said to disconnect battery for 5-10mins so i did
    Reconnected maff to jb4, started car and it immediately we to 3k rpm.

    5th try. Disconnect maff again to return to 3rd try success. No joy. Car wont even start.

    not going to lie. About ready to yank it out and return it!

    talk me off the cliff. Any ideas. Oh one more thing. I jave to hold phone with a couple inches of bluetoith xmitter on the jb4 or it wont connect.
    thanks
    rob
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  • #2
    Got a startup log so we can take a look at it, verify settings, etc?

    Have you tried emailing [email protected] for assistance?

    Click on our banner to visit our website!
    Video of our Stage 2 LPFP upgrade installation.

    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.

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    • #3
      Helped you via email. You switched the MAF and MAP connections when installing.

      As a reminder for new install technical support always email us for quicker support.
      Burger Motorsports
      Home of the JB4 the worlds most popular turbocharged tuning system!

      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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