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  • Low boost new jb4

    Map.csv Attached are my logs. Low boost. Please help

    2019 gts
    jb4
    fuel wires
    ewg wires
    k&n typhoon
    borla *** back
    hks plugs
    Attached Files

  • #2
    Appears to be in limp mode, what codes? Boost come back when restarting? If not likely a boost leak.
    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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    • #3
      Reset the ecu and boost came back to mid 12’s then received code p25a0. Car boost dropped to six after. Stopped car and reset code and boost would come back to 12. Only getting 12 in both map 1 and 2.

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      • #4
        Check your fittings/clamps on the turbos, Intercooler inlet, outlet, and charge pipe into the intake manifold. My guess is the same as Terry's, you've got a boost leak somewhere.

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        • #5
          That is an EWG fault, did you add on JB4 EWG connectors? If so revert those to factory on the turbo side and evaluate. Maybe they are wired wrong.
          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.

          Comment


          • #6
            Removed ewg wires and reverted to factory. No cel after doing so. Boost is the same no matter the map. Logs are on map 0,1,2 and 3. All around the same so I’m assuming boost leak. Please review before I start tearing into it looking for the leak. Also I purchased the car used before adding the Jb4. Could there be an ecu tune that is affecting the performance? Weekends are the only time I have a chance to work on the car, sorry for the delay
            Attached Files

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