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AC Tuning AC Tuning is offline
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Join Date: Sep 2020
Car: M4 Competition
Red face Jb4 S55 no gauges working / no ecu code reading - 09-16-2020, 11:39 AM

I bought a Jb4 from a lad in the States (removed from an s55) with the Bluetooth module.

There is no Obd plug, the seller has confirmed that there was never anything plugged in to his obd port and everything worked correctly.
I have connected the green and brown wire as shown on the install guide on here and in the manual (my car is dtc) but the only gauge that will work is boost and I can't read ecu codes.

I'm not sure if I'm missing something but have triple checked everything and can't find anything wrong.

I have also updated to the latest s55 firmware.

Any help would be greatly appreciated.
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