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itzjoker itzjoker is offline
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Default Can anyone identify this JB4? - 05-27-2020, 01:55 PM

Bought it from someone who apparently had it in his 2014 550i GT.

Box says N63TU G, but the JB4 has only 1 TMAP connector that didn’t even fit my 650i (N63TU F) and 3 boost solenoid connectors? I circled the part of the connector that blocks it from connecting.

Looked at install guides for both F and G chassis and there is supposed to be 2 TMAP connectors.
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Default 05-27-2020, 02:06 PM

Sorry, no idea what that is. Not from the N63 family though none of those use 3 position connectors. Maybe it's a really old Stage1 system from a MINI Cooper or something? Photo of the board inside the enclosure? Seems like you got taken.


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itzjoker itzjoker is offline
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Default 05-27-2020, 02:23 PM

Ahh man good thing I purchased with eBay.
Curious to what this “JB4” is though.
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Default 05-27-2020, 02:46 PM

Looks like a Stage 1 something. I’ve never seen a JB4 in the small case. The G3 V2 printing is the same as my N55 Stage 1, but the harness and sticker on the back aren’t.


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Default 05-27-2020, 03:09 PM

It's an old Stage1 board, not a JB4. The give away was no CANbus or OBDII connection. Hopefully you can get a refund.


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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Default 05-27-2020, 03:13 PM

It also came with this:
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Default 05-27-2020, 03:15 PM

Right but no where to attached it to on JB4 harness. Scam all around unfortunately.

Just recalled the harness and board are an old MB C300/C400 Stage1.


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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itzjoker itzjoker is offline
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Default 05-27-2020, 03:33 PM

Thanks for solving this mystery guys!
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