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      06-17-2025, 11:38 AM   #1
tmr12
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Drives: E36 M3, F15 X5
Join Date: Jul 2023
Location: Massachusetts

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M550i Dinan Chip Tune Elite V2 ECU

For sale is a used Dinan Dinantronics D443-0069 Elite V2 ECU for BMW models, listed below, with the N63TU engine. Removed from a 2018 M550xi with 80K miles. Sold as-is. Was working before removal. I don't have a mounting plate for it but it can easily be mounted with double-sided velcro/tape, etc.

Dinan claims power gains of 55hp/60trq (crank) and 45hp/55trq (wheel). According to Dinan, will fit:
  • 2018-19 G30 M550i xDrive
  • 2016-19 G11 750i xDrive
  • 2016-19 G12 750i & xDrive
Dinan's website lists this as P/N D440-0123, see here for more info and here for installation instructions.

Original price was $1,700. Offered here for $500 shipped anywhere in USA.
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Last edited by tmr12; 06-17-2025 at 11:47 AM..
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