Hi, I've emailed you about the problem with OBD-II header. The OBDLink screenshot had 7E0 for the header (and 0x2101 as PID and "A-40" as equation). Unfortunately RaceChrono currently uses the default OBD-II header only, so this doesn't work at the moment. Next version (v6.1) will add this functionality.
The equation AC-40 floating around doesn't work because there is no variable AC in Racechrono, but AC refers to the 29th byte of the raw frame-message, so to get the 29th byte we use 28 (Arrays start with 0) in the function bytesToUInt to get the equivalent AC value.
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I would be happy to test it too, thanks.
Screenshot: http://bit.ly/2MYpzQv
Channel: Engine oil temperature (C)
Channel Postfix: None, None
ODB-II Header: 0x 7E0
PID: 0x 21 01
Equation: bytesToUInt(raw, 28,1)-40
The equation AC-40 floating around doesn't work because there is no variable AC in Racechrono, but AC refers to the 29th byte of the raw frame-message, so to get the 29th byte we use 28 (Arrays start with 0) in the function bytesToUInt to get the equivalent AC value.