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      06-08-2018, 10:06 PM   #4
CarJunkie
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Drives: e82 1M, e30 325e, f15 X5 40e
Join Date: Nov 2011
Location: Tri-Cities, Washington

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Garage List
1986 BMW 325e  [0.00]
2011 BMW 1M  [0.00]
2018 BMW X5 xDrive40e  [0.00]
I don't see how the overboost code could be related to the oil cooler which seems to be working perfectly. Make sure the engine oil reads full. While the oil cooler and piping have a larger capacity, it may not all drain when changing oil, so the 6.5L may be correct, but always verify full before driving.

The code you are getting seems to be a coincidence. Have you taken logs while at the track to send to your tuner? That would be the next best step.
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K&N panel filter, ER chargepipe, AD engineering FMIC, Mad Dad midpipe, Lightweight Ti axleback, MHD Stage 2+, F10 550i clutch, Ohlins Road and Track, Vorschlag camber plates, M3 convertible FSB with Turner adjustable links